From dcf44ffbdc2f403de02f12516b0c6d5d5813b16f Mon Sep 17 00:00:00 2001
From: Ika <ikatyang@gmail.com>
Date: Thu, 21 Jun 2018 10:29:42 +0800
Subject: [PATCH] feat: support YAML (#4563)

* feat: support YAML

* fix: do not indent sequence in mappingValue

* docs: add yaml to index.md

* fix: reduce `SyntaxError: Node#parse consumed no characters`

* chore: remove old-build and new-worker.js

* refactor

* refactor

* refactor

* refactor

* refactor

* refactor

* refactor

* refactor

* refactor

* refactor

* refactor

* refactor

* fix: no space after `<<`

* fix: add yaml to standalone test

* test: add tests

* fix: next empty line in flow collection

* fix: tabs are not allowed
http://yaml.org/spec/1.2/spec.html#space/indentation/

* fix: update parser

* feat: rewrite the mappingItem logic
* feat: indent sequence in mapping
* feat(doc): add ifBreak#groupId and group#id

* chore: fix node 4

* chore: add tools_yaml.svg

* chore: remove resolved TODO

* refactor: remove unnecessary workaround

* chore(worker): importScriptOnce

* chore(build): rename with babelPlugins

* make it rollup compatible

* feat: support singleQuote

* refactor
---
 README.md                                     |    1 +
 docs/index.md                                 |    1 +
 docs/language-support.md                      |    2 +-
 package.json                                  |    5 +-
 .../replace-array-includes-with-indexof.js    |   26 +
 scripts/build/bundler.js                      |    4 +-
 scripts/build/config.js                       |   13 +
 scripts/build/shims/assert.js                 |    8 +-
 src/common/internal-plugins.js                |   10 +
 src/doc/doc-builders.js                       |   12 +-
 src/doc/doc-printer.js                        |   28 +-
 src/language-yaml/index.js                    |   34 +
 src/language-yaml/options.js                  |    8 +
 src/language-yaml/parser-yaml.js              |   73 +
 src/language-yaml/pragma.js                   |   19 +
 src/language-yaml/printer-yaml.js             |  506 +++
 src/language-yaml/utils.js                    |  206 ++
 src/main/core-options.js                      |    3 +-
 standalone.js                                 |    3 +-
 .../markdown/__snapshots__/jsfmt.spec.js.snap |   28 +-
 .../__snapshots__/jsfmt.spec.js.snap          |    8 +
 tests/yaml_alias/common.yml                   |    1 +
 tests/yaml_alias/jsfmt.spec.js                |    1 +
 .../__snapshots__/jsfmt.spec.js.snap          |  328 ++
 tests/yaml_block_folded/clip.yml              |    6 +
 tests/yaml_block_folded/indent.yml            |    6 +
 tests/yaml_block_folded/jsfmt.spec.js         |    1 +
 tests/yaml_block_folded/keep.yml              |    6 +
 tests/yaml_block_folded/map.yml               |   14 +
 tests/yaml_block_folded/middle-comment.yml    |    3 +
 tests/yaml_block_folded/middle-comments.yml   |    4 +
 tests/yaml_block_folded/newline-unaligned.yml |   31 +
 tests/yaml_block_folded/newline.yml           |   30 +
 tests/yaml_block_folded/props-in-map.yml      |    2 +
 tests/yaml_block_folded/props.yml             |    2 +
 tests/yaml_block_folded/prose.yml             |   41 +
 tests/yaml_block_folded/seq.yml               |    9 +
 tests/yaml_block_folded/strip.yml             |    6 +
 tests/yaml_block_folded/trailing-comment.yml  |    2 +
 .../__snapshots__/jsfmt.spec.js.snap          |  259 ++
 tests/yaml_block_literal/clip.yml             |    6 +
 tests/yaml_block_literal/indent.yml           |    6 +
 tests/yaml_block_literal/jsfmt.spec.js        |    1 +
 tests/yaml_block_literal/keep.yml             |    6 +
 tests/yaml_block_literal/map.yml              |   14 +
 tests/yaml_block_literal/middle-comment.yml   |    3 +
 tests/yaml_block_literal/middle-comments.yml  |    4 +
 .../yaml_block_literal/newline-unaligned.yml  |   31 +
 tests/yaml_block_literal/newline.yml          |    8 +
 tests/yaml_block_literal/props-in-map.yml     |    2 +
 tests/yaml_block_literal/props.yml            |    2 +
 tests/yaml_block_literal/seq.yml              |    9 +
 tests/yaml_block_literal/strip.yml            |    6 +
 tests/yaml_block_literal/trailing-comment.yml |    2 +
 .../__snapshots__/jsfmt.spec.js.snap          |   17 +
 tests/yaml_comment/jsfmt.spec.js              |    1 +
 tests/yaml_comment/root.yml                   |    1 +
 tests/yaml_comment/set.yml                    |    2 +
 .../__snapshots__/jsfmt.spec.js.snap          |   19 +
 tests/yaml_directive/jsfmt.spec.js            |    1 +
 tests/yaml_directive/with-parameters.yml      |    2 +
 tests/yaml_directive/without-parameters.yml   |    2 +
 .../__snapshots__/jsfmt.spec.js.snap          |   20 +
 .../yaml_document/directives-and-comments.yml |    7 +
 tests/yaml_document/jsfmt.spec.js             |    1 +
 .../__snapshots__/jsfmt.spec.js.snap          |  913 ++++++
 tests/yaml_flow_mapping/alias-key.yml         |    1 +
 .../array-key-array-value.yml                 |    1 +
 tests/yaml_flow_mapping/array-key.yml         |    1 +
 tests/yaml_flow_mapping/array-plain.yml       |    1 +
 tests/yaml_flow_mapping/array-value.yml       |    1 +
 tests/yaml_flow_mapping/comment-between.yml   |    5 +
 tests/yaml_flow_mapping/comment-trailing.yml  |    2 +
 tests/yaml_flow_mapping/empty-item-colon.yml  |    1 +
 .../yaml_flow_mapping/empty-line-collapse.yml |    3 +
 tests/yaml_flow_mapping/empty-line.yml        |    3 +
 tests/yaml_flow_mapping/empty.yml             |    1 +
 tests/yaml_flow_mapping/jsfmt.spec.js         |    3 +
 .../yaml_flow_mapping/long-key-long-value.yml |    1 +
 tests/yaml_flow_mapping/long-key.yml          |    1 +
 tests/yaml_flow_mapping/long-plain.yml        |    1 +
 tests/yaml_flow_mapping/long-value.yml        |    1 +
 tests/yaml_flow_mapping/middle-comment.yml    |    2 +
 tests/yaml_flow_mapping/middle-comments.yml   |    3 +
 tests/yaml_flow_mapping/next-empty-line.yml   |    5 +
 tests/yaml_flow_mapping/props-in-map.yml      |    1 +
 tests/yaml_flow_mapping/props.yml             |    1 +
 .../short-key-short-value.yml                 |    1 +
 tests/yaml_flow_mapping/short-key.yml         |    1 +
 tests/yaml_flow_mapping/short-plain.yml       |    1 +
 tests/yaml_flow_mapping/short-value.yml       |    1 +
 .../__snapshots__/jsfmt.spec.js.snap          |  904 ++++++
 tests/yaml_flow_sequence/alias-key.yml        |    1 +
 .../array-key-array-value.yml                 |    1 +
 tests/yaml_flow_sequence/array-key.yml        |    1 +
 tests/yaml_flow_sequence/array-plain.yml      |    1 +
 tests/yaml_flow_sequence/array-value.yml      |    1 +
 tests/yaml_flow_sequence/comment-between.yml  |    5 +
 tests/yaml_flow_sequence/comment-trailing.yml |    2 +
 tests/yaml_flow_sequence/empty-item-colon.yml |    1 +
 .../empty-line-collapse.yml                   |    3 +
 tests/yaml_flow_sequence/empty-line.yml       |    3 +
 tests/yaml_flow_sequence/empty.yml            |    1 +
 tests/yaml_flow_sequence/jsfmt.spec.js        |    3 +
 .../long-key-long-value.yml                   |    1 +
 tests/yaml_flow_sequence/long-key.yml         |    1 +
 tests/yaml_flow_sequence/long-plain.yml       |    1 +
 tests/yaml_flow_sequence/long-value.yml       |    1 +
 tests/yaml_flow_sequence/middle-comment.yml   |    2 +
 tests/yaml_flow_sequence/middle-comments.yml  |    3 +
 tests/yaml_flow_sequence/next-empty-line.yml  |    5 +
 tests/yaml_flow_sequence/props-in-map.yml     |    1 +
 tests/yaml_flow_sequence/props.yml            |    1 +
 .../short-key-short-value.yml                 |    1 +
 tests/yaml_flow_sequence/short-key.yml        |    1 +
 tests/yaml_flow_sequence/short-plain.yml      |    1 +
 tests/yaml_flow_sequence/short-value.yml      |    1 +
 .../__snapshots__/jsfmt.spec.js.snap          |   23 +
 tests/yaml_insert_pragma/jsfmt.spec.js        |    1 +
 tests/yaml_insert_pragma/with-pragma.yml      |    3 +
 tests/yaml_insert_pragma/without-pragma.yml   |    3 +
 tests/yaml_mapping/3-style.yml                |    5 +
 .../__snapshots__/jsfmt.spec.js.snap          |  343 ++
 tests/yaml_mapping/array-key.yml              |    1 +
 tests/yaml_mapping/array-value.yml            |    1 +
 tests/yaml_mapping/comment-value.yml          |    1 +
 tests/yaml_mapping/comment.yml                |    3 +
 tests/yaml_mapping/common.yml                 |    2 +
 tests/yaml_mapping/explicit-key.yml           |    6 +
 tests/yaml_mapping/in-sequence.yml            |    2 +
 tests/yaml_mapping/jsfmt.spec.js              |    2 +
 .../yaml_mapping/key-with-leading-comment.yml |    3 +
 tests/yaml_mapping/mapping.yml                |    2 +
 tests/yaml_mapping/middle-comment.yml         |    2 +
 tests/yaml_mapping/middle-comments.yml        |    3 +
 tests/yaml_mapping/props-in-map.yml           |    2 +
 tests/yaml_mapping/props.yml                  |    2 +
 tests/yaml_mapping/quote-key.yml              |    2 +
 tests/yaml_mapping/sequence.yml               |    2 +
 tests/yaml_mapping/tag-key.yml                |    2 +
 .../__snapshots__/jsfmt.spec.js.snap          |   36 +
 tests/yaml_plain/jsfmt.spec.js                |    1 +
 tests/yaml_plain/middle-comment.yml           |    2 +
 tests/yaml_plain/middle-comments.yml          |    3 +
 tests/yaml_plain/true.yml                     |    1 +
 tests/yaml_plain/verbatim.yml                 |    1 +
 .../__snapshots__/jsfmt.spec.js.snap          |   79 +
 tests/yaml_prettier_ignore/document.yml       |    7 +
 tests/yaml_prettier_ignore/jsfmt.spec.js      |    1 +
 .../yaml_prettier_ignore/leading-comment.yml  |    3 +
 tests/yaml_prettier_ignore/middle-comment.yml |    5 +
 tests/yaml_prettier_ignore/trailing-comma.yml |    9 +
 .../yaml_prettier_ignore/trailing-comment.yml |    3 +
 .../__snapshots__/jsfmt.spec.js.snap          |   43 +
 tests/yaml_quote/jsfmt.spec.js                |    2 +
 tests/yaml_quote/quote.yml                    |    8 +
 .../__snapshots__/jsfmt.spec.js.snap          |   23 +
 tests/yaml_require_pragma/jsfmt.spec.js       |    1 +
 tests/yaml_require_pragma/with-pragma.yml     |    3 +
 tests/yaml_require_pragma/without-pragma.yml  |    3 +
 .../__snapshots__/jsfmt.spec.js.snap          |  453 +++
 tests/yaml_root/documents-with-directive.yml  |    6 +
 tests/yaml_root/documents.yml                 |    5 +
 tests/yaml_root/empty.yml                     |    0
 tests/yaml_root/example.yml                   |  205 ++
 tests/yaml_root/jsfmt.spec.js                 |    1 +
 .../__snapshots__/jsfmt.spec.js.snap          |  153 +
 tests/yaml_sequence/items.yml                 |    3 +
 tests/yaml_sequence/jsfmt.spec.js             |    2 +
 tests/yaml_sequence/middle-comment.yml        |    2 +
 tests/yaml_sequence/middle-comments.yml       |    3 +
 tests/yaml_sequence/nested.yml                |    5 +
 tests/yaml_sequence/null-item.yml             |    1 +
 tests/yaml_sequence/props-in-map.yml          |    3 +
 tests/yaml_sequence/props.yml                 |    3 +
 .../__snapshots__/jsfmt.spec.js.snap          | 2782 +++++++++++++++++
 tests/yaml_spec/aliases-in-block-sequence.yml |    4 +
 .../aliases-in-explicit-block-mapping.yml     |    3 +
 .../yaml_spec/allowed-characters-in-alias.yml |    2 +
 .../yaml_spec/allowed-characters-in-keys.yml  |    5 +
 .../allowed-characters-in-plain-scalars.yml   |    5 +
 ...lowed-characters-in-quoted-mapping-key.yml |    2 +
 .../anchor-before-zero-indented-sequence.yml  |    5 +
 .../anchor-with-unicode-character.yml         |    2 +
 tests/yaml_spec/anchors-and-tags.yml          |    4 +
 tests/yaml_spec/anchors-in-mapping.yml        |    2 +
 .../yaml_spec/anchors-with-colon-in-name.yml  |    3 +
 .../yaml_spec/backslashes-in-singlequotes.yml |    1 +
 ...are-document-after-document-end-marker.yml |    4 +
 tests/yaml_spec/blank-lines.yml               |   12 +
 .../block-mapping-with-missing-values.yml     |    3 +
 .../block-mapping-with-multiline-scalars.yml  |    6 +
 .../block-mappings-in-block-sequence.yml      |    4 +
 .../block-scalar-indicator-order.yml          |    4 +
 tests/yaml_spec/block-scalar-keep.yml         |    5 +
 tests/yaml_spec/block-scalar-strip.yml        |    5 +
 .../block-scalar-with-spaces-only.yml         |    5 +
 .../block-sequence-in-block-mapping.yml       |    3 +
 .../block-sequence-in-block-sequence.yml      |    3 +
 tests/yaml_spec/block-submapping.yml          |    3 +
 .../colon-in-double-quoted-string.yml         |    1 +
 .../comment-in-flow-sequence-before-comma.yml |    4 +
 tests/yaml_spec/construct-binary.yml          |   12 +
 .../yaml_spec/document-start-on-last-line.yml |    3 +
 tests/yaml_spec/document-with-footer.yml      |    2 +
 .../empty-lines-at-end-of-document.yml        |    4 +
 .../empty-lines-between-mapping-elements.yml  |    4 +
 tests/yaml_spec/empty-stream.yml              |    0
 .../escaped-slash-in-double-quotes.yml        |    1 +
 tests/yaml_spec/explicit-non-specific-tag.yml |    1 +
 .../flow-mapping-in-block-sequence.yml        |    1 +
 tests/yaml_spec/flow-mapping.yml              |    1 +
 .../flow-sequence-in-block-mapping.yml        |    1 +
 .../flow-sequence-in-flow-mapping.yml         |    1 +
 .../flow-sequence-in-flow-sequence.yml        |    1 +
 tests/yaml_spec/flow-sequence.yml             |    1 +
 tests/yaml_spec/folded-block-scalar.yml       |    8 +
 .../implicit-flow-mapping-key-on-one-line.yml |    1 +
 tests/yaml_spec/jsfmt.spec.js                 |    1 +
 ...r-after-missing-explicit-mapping-value.yml |    4 +
 tests/yaml_spec/literal-block-scalar.yml      |    8 +
 tests/yaml_spec/literal-unicode.yml           |    2 +
 tests/yaml_spec/lookahead-test-cases.yml      |    2 +
 ...ing-key-and-flow-sequence-item-anchors.yml |    3 +
 ...ing-with-anchor-on-document-start-line.yml |    1 +
 ...xed-block-mapping-explicit-to-implicit.yml |    3 +
 ...xed-block-mapping-implicit-to-explicit.yml |    3 +
 .../yaml_spec/multi-level-mapping-indent.yml  |    6 +
 ...multiline-plain-scalar-with-empty-line.yml |    5 +
 .../multiline-scalar-at-top-level.yml         |    6 +
 .../yaml_spec/multiline-scalar-in-mapping.yml |    5 +
 ...calar-that-looks-like-a-yaml-directive.yml |    3 +
 .../multiple-entry-block-sequence.yml         |    3 +
 .../yaml_spec/multiple-pair-block-mapping.yml |    3 +
 .../nested-flow-collections-on-one-line.yml   |    2 +
 tests/yaml_spec/nested-flow-collections.yml   |    8 +
 .../node-anchor-and-tag-on-seperate-lines.yml |    3 +
 .../node-and-mapping-key-anchors.yml          |   17 +
 .../non-specific-tags-on-scalars.yml          |    6 +
 .../plain-mapping-key-ending-with-colon.yml   |    2 +
 ...ooking-like-key-comment-anchor-and-tag.yml |    2 +
 .../plain-scalar-with-backslashes.yml         |    2 +
 tests/yaml_spec/plain-url-in-flow-mapping.yml |    1 +
 tests/yaml_spec/scalars-on-line.yml           |    3 +
 ...-looks-like-two-with-wrong-indentation.yml |    2 +
 tests/yaml_spec/sequence-indent.yml           |    4 +
 ...ith-same-indentation-as-parent-mapping.yml |    4 +
 tests/yaml_spec/simple-mapping-indent.yml     |    2 +
 .../yaml_spec/single-entry-block-sequence.yml |    1 +
 tests/yaml_spec/single-pair-block-mapping.yml |    1 +
 .../spec-example-2-1-sequence-of-scalars.yml  |    3 +
 ...my-sosa-appears-twice-in-this-document.yml |    8 +
 ...example-2-11-mapping-between-sequences.yml |    9 +
 ...ec-example-2-12-compact-nested-mapping.yml |    8 +
 ...-13-in-literals-newlines-are-preserved.yml |    4 +
 ...-folded-scalars-newlines-become-spaces.yml |    4 +
 ...rved-for-more-indented-and-blank-lines.yml |    8 +
 ...mple-2-16-indentation-determines-scope.yml |    7 +
 .../spec-example-2-17-quoted-scalars.yml      |    7 +
 ...c-example-2-18-multi-line-flow-scalars.yml |    6 +
 ...example-2-2-mapping-scalars-to-scalars.yml |    3 +
 ...pec-example-2-23-various-explicit-tags.yml |   13 +
 .../spec-example-2-24-global-tags.yml         |   14 +
 .../spec-example-2-25-unordered-sets.yml      |    7 +
 .../spec-example-2-26-ordered-mappings.yml    |    7 +
 tests/yaml_spec/spec-example-2-27-invoice.yml |   29 +
 .../yaml_spec/spec-example-2-28-log-file.yml  |   26 +
 ...ample-2-3-mapping-scalars-to-sequences.yml |    8 +
 .../spec-example-2-4-sequence-of-mappings.yml |    8 +
 ...spec-example-2-5-sequence-of-sequences.yml |    3 +
 .../spec-example-2-6-mapping-of-mappings.yml  |    5 +
 ...-example-2-7-two-documents-in-a-stream.yml |   10 +
 ...mple-2-8-play-by-play-feed-from-a-game.yml |   10 +
 ...-2-9-single-document-with-two-comments.yml |    8 +
 .../spec-example-5-12-tabs-and-spaces.yml     |    6 +
 ...example-5-3-block-structure-indicators.yml |    7 +
 ...example-5-4-flow-collection-indicators.yml |    2 +
 .../spec-example-5-5-comment-indicator.yml    |    1 +
 ...c-example-5-6-node-property-indicators.yml |    2 +
 ...ec-example-5-7-block-scalar-indicators.yml |    6 +
 ...c-example-5-8-quoted-scalar-indicators.yml |    2 +
 .../spec-example-5-9-directive-indicator.yml  |    2 +
 .../spec-example-6-1-indentation-spaces.yml   |   12 +
 .../spec-example-6-10-comment-lines.yml       |    4 +
 .../spec-example-6-11-multi-line-comments.yml |    5 +
 .../spec-example-6-12-separation-spaces.yml   |    6 +
 .../spec-example-6-13-reserved-directives.yml |    3 +
 .../spec-example-6-14-yaml-directive.yml      |    4 +
 .../spec-example-6-16-tag-directive.yml       |    3 +
 .../spec-example-6-18-primary-tag-handle.yml  |    7 +
 ...spec-example-6-19-secondary-tag-handle.yml |    3 +
 ...pec-example-6-2-indentation-indicators.yml |    4 +
 .../spec-example-6-20-tag-handles.yml         |    3 +
 .../spec-example-6-21-local-tag-prefix.yml    |    7 +
 .../spec-example-6-22-global-tag-prefix.yml   |    3 +
 .../spec-example-6-23-node-properties.yml     |    3 +
 .../spec-example-6-24-verbatim-tags.yml       |    2 +
 .../spec-example-6-26-tag-shorthands.yml      |    5 +
 .../spec-example-6-28-non-specific-tags.yml   |    4 +
 .../spec-example-6-29-node-anchors.yml        |    2 +
 .../spec-example-6-3-separation-spaces.yml    |    3 +
 .../spec-example-6-4-line-prefixes.yml        |    7 +
 .../spec-example-6-5-empty-lines.yml          |    8 +
 .../spec-example-6-6-line-folding.yml         |    7 +
 .../spec-example-6-7-block-folding.yml        |    6 +
 .../spec-example-6-8-flow-folding.yml         |    7 +
 .../spec-example-6-9-separated-comment.yml    |    2 +
 .../spec-example-7-1-alias-nodes.yml          |    4 +
 .../spec-example-7-10-plain-characters.yml    |   12 +
 .../spec-example-7-11-plain-implicit-keys.yml |    3 +
 .../spec-example-7-12-plain-lines.yml         |    4 +
 .../spec-example-7-13-flow-sequence.yml       |    2 +
 ...pec-example-7-14-flow-sequence-entries.yml |    8 +
 .../spec-example-7-15-flow-mappings.yml       |    2 +
 ...spec-example-7-16-flow-mapping-entries.yml |    5 +
 ...mple-7-17-flow-mapping-separate-values.yml |    6 +
 ...mple-7-18-flow-mapping-adjacent-values.yml |    5 +
 ...example-7-19-single-pair-flow-mappings.yml |    3 +
 .../spec-example-7-2-empty-content.yml        |    4 +
 ...xample-7-20-single-pair-explicit-entry.yml |    4 +
 ...mple-7-21-single-pair-implicit-entries.yml |    3 +
 .../spec-example-7-23-flow-content.yml        |    5 +
 .../spec-example-7-24-flow-nodes.yml          |    5 +
 ...xample-7-3-completely-empty-flow-nodes.yml |    4 +
 ...xample-7-4-double-quoted-implicit-keys.yml |    3 +
 ...-example-7-5-double-quoted-line-breaks.yml |    5 +
 .../spec-example-7-6-double-quoted-lines.yml  |    4 +
 ...c-example-7-7-single-quoted-characters.yml |    1 +
 ...xample-7-8-single-quoted-implicit-keys.yml |    3 +
 .../spec-example-7-9-single-quoted-lines.yml  |    4 +
 .../spec-example-8-1-block-scalar-header.yml  |    9 +
 ...10-folded-lines-8-13-final-empty-lines.yml |   16 +
 .../spec-example-8-14-block-sequence.yml      |    3 +
 ...xample-8-15-block-sequence-entry-types.yml |    6 +
 .../spec-example-8-16-block-mappings.yml      |    2 +
 ...le-8-17-explicit-block-mapping-entries.yml |    5 +
 ...le-8-18-implicit-block-mapping-entries.yml |    4 +
 ...ec-example-8-19-compact-block-mappings.yml |    3 +
 ...xample-8-2-block-indentation-indicator.yml |   11 +
 .../spec-example-8-20-block-node-types.yml    |    6 +
 .../spec-example-8-21-block-scalar-nodes.yml  |    6 +
 ...ec-example-8-22-block-collection-nodes.yml |    6 +
 ...-example-8-4-chomping-final-line-break.yml |    6 +
 ...ec-example-8-5-chomping-trailing-lines.yml |   19 +
 ...spec-example-8-6-empty-scalar-chomping.yml |    6 +
 .../spec-example-8-7-literal-scalar.yml       |    5 +
 .../spec-example-8-8-literal-content.yml      |    9 +
 .../spec-example-8-9-folded-scalar.yml        |    5 +
 .../spec-example-9-2-document-markers.yml     |    4 +
 .../spec-example-9-3-bare-documents.yml       |    7 +
 .../spec-example-9-4-explicit-documents.yml   |    7 +
 .../spec-example-9-5-directives-documents.yml |    8 +
 tests/yaml_spec/spec-example-9-6-stream.yml   |    7 +
 tests/yaml_spec/tab-after-document-header.yml |    1 +
 ...ing-of-line-followed-by-a-flow-mapping.yml |    1 +
 tests/yaml_spec/tags-for-block-objects.yml    |    4 +
 tests/yaml_spec/tags-for-flow-objects.yml     |    4 +
 tests/yaml_spec/tags-for-root-objects.yml     |    8 +
 tests/yaml_spec/tags-in-block-sequence.yml    |    4 +
 tests/yaml_spec/tags-in-explicit-mapping.yml  |    4 +
 tests/yaml_spec/tags-in-implicit-mapping.yml  |    5 +
 tests/yaml_spec/tags-on-empty-scalars.yml     |    5 +
 ...three-dashes-and-content-without-space.yml |    2 +
 ...rious-combinations-of-tags-and-anchors.yml |   26 +
 ...s-location-of-anchors-in-flow-sequence.yml |    6 +
 tests/yaml_spec/various-trailing-comments.yml |   16 +
 tests/yaml_spec/various-trailing-tabs.yml     |    4 +
 .../whitespace-after-scalars-in-flow.yml      |    6 +
 .../whitespace-around-colon-in-mappings.yml   |   12 +
 ...ar-with-line-that-looks-like-a-comment.yml |    4 +
 .../yaml_spec/zero-indented-block-scalar.yml  |    4 +
 tests_config/require_standalone.js            |    3 +-
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 create mode 100644 tests/yaml_spec/tags-on-empty-scalars.yml
 create mode 100644 tests/yaml_spec/three-dashes-and-content-without-space.yml
 create mode 100644 tests/yaml_spec/various-combinations-of-tags-and-anchors.yml
 create mode 100644 tests/yaml_spec/various-location-of-anchors-in-flow-sequence.yml
 create mode 100644 tests/yaml_spec/various-trailing-comments.yml
 create mode 100644 tests/yaml_spec/various-trailing-tabs.yml
 create mode 100644 tests/yaml_spec/whitespace-after-scalars-in-flow.yml
 create mode 100644 tests/yaml_spec/whitespace-around-colon-in-mappings.yml
 create mode 100644 tests/yaml_spec/zero-indented-block-scalar-with-line-that-looks-like-a-comment.yml
 create mode 100644 tests/yaml_spec/zero-indented-block-scalar.yml
 create mode 100644 website/static/images/languages/tools_yaml.svg

diff --git a/README.md b/README.md
index 91db3d0d5..57993b83a 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,7 @@
   · GraphQL
   · JSON
   · Markdown
+  · YAML
   · <a href="https://prettier.io/docs/en/plugins.html">
       Your favorite language?
     </a>
diff --git a/docs/index.md b/docs/index.md
index 29e313bab..d4da467ca 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -13,6 +13,7 @@ Prettier is an opinionated code formatter with support for:
 - [JSON](http://json.org/)
 - [GraphQL](http://graphql.org/)
 - [Markdown](http://commonmark.org/), including [GFM](https://github.github.com/gfm/)
+- [YAML](http://yaml.org/)
 
 It removes all original styling[\*](#footnotes) and ensures that all outputted code conforms to a consistent style. (See this [blog post](http://jlongster.com/A-Prettier-Formatter))
 
diff --git a/docs/language-support.md b/docs/language-support.md
index 2f6704cde..33f6d1495 100644
--- a/docs/language-support.md
+++ b/docs/language-support.md
@@ -7,6 +7,6 @@ Prettier attempts to support all JavaScript language features, including non-sta
 
 All of JSX and Flow syntax is supported. In fact, the test suite in `tests/flow` _is_ the entire Flow test suite and they all pass.
 
-Prettier also supports [TypeScript](https://www.typescriptlang.org/), CSS, [Less](http://lesscss.org/), [SCSS](http://sass-lang.com), [Vue](https://vuejs.org/), [JSON](http://json.org/), [GraphQL](http://graphql.org/), and [Markdown](http://commonmark.org).
+Prettier also supports [TypeScript](https://www.typescriptlang.org/), CSS, [Less](http://lesscss.org/), [SCSS](http://sass-lang.com), [Vue](https://vuejs.org/), [JSON](http://json.org/), [GraphQL](http://graphql.org/), [Markdown](http://commonmark.org), and [YAML](http://yaml.org/).
 
 The minimum version of TypeScript supported is 2.1.3 as it introduces the ability to have leading `|` for type definitions which prettier outputs.
diff --git a/package.json b/package.json
index 47d40a21f..425d555a7 100644
--- a/package.json
+++ b/package.json
@@ -57,7 +57,9 @@
     "typescript": "3.0.0-dev.20180602",
     "typescript-eslint-parser": "16.0.0",
     "unicode-regex": "1.0.1",
-    "unified": "6.1.6"
+    "unified": "6.1.6",
+    "yaml": "1.0.0-beta.7",
+    "yaml-unist-parser": "1.0.0-beta.4"
   },
   "devDependencies": {
     "@babel/cli": "7.0.0-beta.49",
@@ -80,6 +82,7 @@
     "prettylint": "1.0.0",
     "rimraf": "2.6.2",
     "rollup": "0.47.6",
+    "rollup-plugin-alias": "1.4.0",
     "rollup-plugin-babel": "4.0.0-beta.4",
     "rollup-plugin-commonjs": "8.2.6",
     "rollup-plugin-json": "2.1.1",
diff --git a/scripts/build/babel-plugins/replace-array-includes-with-indexof.js b/scripts/build/babel-plugins/replace-array-includes-with-indexof.js
new file mode 100644
index 000000000..fb8c14330
--- /dev/null
+++ b/scripts/build/babel-plugins/replace-array-includes-with-indexof.js
@@ -0,0 +1,26 @@
+"use strict";
+
+//
+// BEFORE:
+//   [__something__].includes(__something__)
+//
+// AFTER:
+//   [__something__].indexOf(__something__) !== -1
+//
+
+module.exports = ({ types: t }) => ({
+  visitor: {
+    CallExpression(path) {
+      const node = path.node;
+      const callee = node.callee;
+      if (
+        t.isMemberExpression(callee, { computed: false }) &&
+        t.isArrayExpression(callee.object) &&
+        t.isIdentifier(callee.property, { name: "includes" })
+      ) {
+        callee.property.name = "indexOf";
+        path.replaceWith(t.binaryExpression("!==", node, t.numericLiteral(-1)));
+      }
+    }
+  }
+});
diff --git a/scripts/build/bundler.js b/scripts/build/bundler.js
index ea76580fe..21ac2e71f 100644
--- a/scripts/build/bundler.js
+++ b/scripts/build/bundler.js
@@ -5,6 +5,7 @@ const path = require("path");
 const { rollup } = require("rollup");
 const webpack = require("webpack");
 const resolve = require("rollup-plugin-node-resolve");
+const alias = require("rollup-plugin-alias");
 const commonjs = require("rollup-plugin-commonjs");
 const nodeGlobals = require("rollup-plugin-node-globals");
 const json = require("rollup-plugin-json");
@@ -36,7 +37,7 @@ const EXTERNALS = [
 function getBabelConfig(bundle) {
   const config = {
     babelrc: false,
-    plugins: [],
+    plugins: bundle.babelPlugins || [],
     compact: bundle.type === "plugin" ? false : "auto"
   };
   if (bundle.type === "core") {
@@ -108,6 +109,7 @@ function getRollupConfig(bundle) {
     replace(replaceStrings),
     executable(),
     json(),
+    bundle.alias && alias(bundle.alias),
     bundle.target === "universal" &&
       nativeShims(path.resolve(__dirname, "shims")),
     resolve({
diff --git a/scripts/build/config.js b/scripts/build/config.js
index d730e53c0..86db60185 100644
--- a/scripts/build/config.js
+++ b/scripts/build/config.js
@@ -13,6 +13,7 @@ const path = require("path");
  * @property {CommonJSConfig} [commonjs={}] - options for `rollup-plugin-commonjs`
  * @property {string[]} external - array of paths that should not be included in the final bundle
  * @property {Object.<string, string>} replace - map of strings to replace when processing the bundle
+ * @property {string[]} babelPlugins - babel plugins
 
  * @typedef {Object} CommonJSConfig
  * @property {Object} namedExports - for cases where rollup can't infer what's exported
@@ -66,6 +67,18 @@ const parsers = [
   {
     input: "src/language-html/parser-parse5.js",
     target: "node"
+  },
+  {
+    input: "src/language-yaml/parser-yaml.js",
+    target: "universal",
+    alias: {
+      // Force using the CJS file, instead of ESM; i.e. get the file
+      // from `"main"` instead of `"module"` (rollup default) of package.json
+      "lines-and-columns": require.resolve("lines-and-columns")
+    },
+    babelPlugins: [
+      require.resolve("./babel-plugins/replace-array-includes-with-indexof")
+    ]
   }
 ].map(parser => {
   const name = getFileOutput(parser)
diff --git a/scripts/build/shims/assert.js b/scripts/build/shims/assert.js
index f035fe341..a6eb7fec3 100644
--- a/scripts/build/shims/assert.js
+++ b/scripts/build/shims/assert.js
@@ -1,4 +1,4 @@
-export default {
-  ok() {},
-  strictEqual() {}
-};
+function assert() {}
+assert.ok = function() {};
+assert.strictEqual = function() {};
+export default assert;
diff --git a/src/common/internal-plugins.js b/src/common/internal-plugins.js
index 0065583b7..2cd1f9e27 100644
--- a/src/common/internal-plugins.js
+++ b/src/common/internal-plugins.js
@@ -109,5 +109,15 @@ module.exports = [
         return $$$r("../language-vue/parser-vue").parsers.vue;
       }
     }
+  },
+
+  // YAML
+  require("../language-yaml"),
+  {
+    parsers: {
+      get yaml() {
+        return $$$r("../language-yaml/parser-yaml").parsers.yaml;
+      }
+    }
   }
 ];
diff --git a/src/doc/doc-builders.js b/src/doc/doc-builders.js
index 23a90a0c3..08acf1436 100644
--- a/src/doc/doc-builders.js
+++ b/src/doc/doc-builders.js
@@ -50,6 +50,7 @@ function group(contents, opts) {
 
   return {
     type: "group",
+    id: opts.id,
     contents: contents,
     break: !!opts.shouldBreak,
     expandedStates: opts.expandedStates
@@ -83,7 +84,9 @@ function fill(parts) {
   return { type: "fill", parts };
 }
 
-function ifBreak(breakContents, flatContents) {
+function ifBreak(breakContents, flatContents, opts) {
+  opts = opts || {};
+
   if (process.env.NODE_ENV !== "production") {
     if (breakContents) {
       assertDoc(breakContents);
@@ -93,7 +96,12 @@ function ifBreak(breakContents, flatContents) {
     }
   }
 
-  return { type: "if-break", breakContents, flatContents };
+  return {
+    type: "if-break",
+    breakContents,
+    flatContents,
+    groupId: opts.groupId
+  };
 }
 
 function lineSuffix(contents) {
diff --git a/src/doc/doc-printer.js b/src/doc/doc-printer.js
index 56c3b7f65..cc3ecfe01 100644
--- a/src/doc/doc-printer.js
+++ b/src/doc/doc-printer.js
@@ -3,6 +3,9 @@
 const util = require("../common/util");
 const { concat, fill, cursor } = require("./doc-builders");
 
+/** @type {{[groupId: PropertyKey]: MODE}} */
+let groupModeMap;
+
 const MODE_BREAK = 1;
 const MODE_FLAT = 2;
 
@@ -150,6 +153,9 @@ function fits(next, restCommands, width, options, mustBeFlat) {
           }
           cmds.push([ind, doc.break ? MODE_BREAK : mode, doc.contents]);
 
+          if (doc.id) {
+            groupModeMap[doc.id] = cmds[cmds.length - 1][1];
+          }
           break;
         case "fill":
           for (let i = doc.parts.length - 1; i >= 0; i--) {
@@ -157,19 +163,21 @@ function fits(next, restCommands, width, options, mustBeFlat) {
           }
 
           break;
-        case "if-break":
-          if (mode === MODE_BREAK) {
+        case "if-break": {
+          const groupMode = doc.groupId ? groupModeMap[doc.groupId] : mode;
+          if (groupMode === MODE_BREAK) {
             if (doc.breakContents) {
               cmds.push([ind, mode, doc.breakContents]);
             }
           }
-          if (mode === MODE_FLAT) {
+          if (groupMode === MODE_FLAT) {
             if (doc.flatContents) {
               cmds.push([ind, mode, doc.flatContents]);
             }
           }
 
           break;
+        }
         case "line":
           switch (mode) {
             // fallthrough
@@ -194,6 +202,8 @@ function fits(next, restCommands, width, options, mustBeFlat) {
 }
 
 function printDocToString(doc, options) {
+  groupModeMap = {};
+
   const width = options.printWidth;
   const newLine = options.newLine || "\n";
   let pos = 0;
@@ -299,6 +309,10 @@ function printDocToString(doc, options) {
               break;
             }
           }
+
+          if (doc.id) {
+            groupModeMap[doc.id] = cmds[cmds.length - 1][1];
+          }
           break;
         // Fills each line with as much code as possible before moving to a new
         // line with the same indentation.
@@ -395,19 +409,21 @@ function printDocToString(doc, options) {
           }
           break;
         }
-        case "if-break":
-          if (mode === MODE_BREAK) {
+        case "if-break": {
+          const groupMode = doc.groupId ? groupModeMap[doc.groupId] : mode;
+          if (groupMode === MODE_BREAK) {
             if (doc.breakContents) {
               cmds.push([ind, mode, doc.breakContents]);
             }
           }
-          if (mode === MODE_FLAT) {
+          if (groupMode === MODE_FLAT) {
             if (doc.flatContents) {
               cmds.push([ind, mode, doc.flatContents]);
             }
           }
 
           break;
+        }
         case "line-suffix":
           lineSuffix.push([ind, mode, doc.contents]);
           break;
diff --git a/src/language-yaml/index.js b/src/language-yaml/index.js
new file mode 100644
index 000000000..94e1c0f90
--- /dev/null
+++ b/src/language-yaml/index.js
@@ -0,0 +1,34 @@
+"use strict";
+
+const printer = require("./printer-yaml");
+const options = require("./options");
+
+const language = {
+  name: "YAML",
+  parsers: ["yaml"],
+  vscodeLanguageIds: ["yaml"],
+  // https://github.com/github/linguist/blob/master/lib/linguist/languages.yml
+  aceMode: "yaml",
+  aliases: ["yml"],
+  codemirrorMimeType: "text/x-yaml",
+  codemirrorMode: "yaml",
+  extensions: [
+    ".yml",
+    ".reek",
+    ".rviz",
+    ".sublime-syntax",
+    ".syntax",
+    ".yaml",
+    ".yaml-tmlanguage",
+    ".yml.mysql"
+  ],
+  filenames: [".clang-format", ".clang-tidy", ".gemrc"],
+  linguistLanguageId: 407,
+  tmScope: "source.yaml"
+};
+
+module.exports = {
+  languages: [language],
+  printers: { yaml: printer },
+  options
+};
diff --git a/src/language-yaml/options.js b/src/language-yaml/options.js
new file mode 100644
index 000000000..c50eb3743
--- /dev/null
+++ b/src/language-yaml/options.js
@@ -0,0 +1,8 @@
+"use strict";
+
+const commonOptions = require("../common/common-options");
+
+// format based on https://github.com/prettier/prettier/blob/master/src/main/core-options.js
+module.exports = {
+  bracketSpacing: commonOptions.bracketSpacing
+};
diff --git a/src/language-yaml/parser-yaml.js b/src/language-yaml/parser-yaml.js
new file mode 100644
index 000000000..b679d60de
--- /dev/null
+++ b/src/language-yaml/parser-yaml.js
@@ -0,0 +1,73 @@
+"use strict";
+
+const createError = require("../common/parser-create-error");
+const { hasPragma } = require("./pragma");
+const { createNull, defineShortcut, mapNode } = require("./utils");
+
+function defineShortcuts(node) {
+  switch (node.type) {
+    case "document":
+      defineShortcut(node, "head", () => node.children[0]);
+      defineShortcut(node, "body", () => node.children[1]);
+      break;
+    case "sequenceItem":
+    case "flowSequenceItem":
+    case "mappingKey":
+    case "mappingValue":
+      defineShortcut(node, "node", () => node.children[0]);
+      break;
+    case "mappingItem":
+    case "flowMappingItem":
+      defineShortcut(node, "key", () => node.children[0]);
+      defineShortcut(node, "value", () => node.children[1]);
+      break;
+  }
+}
+
+function parse(text) {
+  try {
+    const root = mapNode(require("yaml-unist-parser").parse(text), node => {
+      // replace explicit empty MappingKey/MappingValue with implicit one
+      if (
+        (node.type === "mappingKey" || node.type === "mappingValue") &&
+        node.children[0].type === "null" &&
+        node.leadingComments.length === 0 &&
+        node.trailingComments.length === 0
+      ) {
+        return createNull();
+      }
+
+      defineShortcuts(node);
+      return node;
+    });
+
+    /**
+     * suppress `comment not printed` error
+     *
+     * comments are handled in printer-yaml.js without using `printComment`
+     * so that it'll always throw errors even if we printed it correctly
+     */
+    delete root.comments;
+
+    return root;
+  } catch (error) {
+    // istanbul ignore next
+    throw error && error.name === "YAMLSyntaxError"
+      ? createError(error.message, error.position)
+      : error;
+  }
+}
+
+const parser = {
+  astFormat: "yaml",
+  parse,
+  hasPragma,
+  locStart: node => node.position.start.offset,
+  locEnd: node => node.position.end.offset
+};
+
+module.exports = {
+  parsers: {
+    yaml: parser
+  }
+};
diff --git a/src/language-yaml/pragma.js b/src/language-yaml/pragma.js
new file mode 100644
index 000000000..c2853c4ad
--- /dev/null
+++ b/src/language-yaml/pragma.js
@@ -0,0 +1,19 @@
+"use strict";
+
+function isPragma(text) {
+  return /^\s*@(prettier|format)\s*$/.test(text);
+}
+
+function hasPragma(text) {
+  return /^\s*#[^\n\S]*@(prettier|format)\s*?(\n|$)/.test(text);
+}
+
+function insertPragma(text) {
+  return `# @format\n\n${text}`;
+}
+
+module.exports = {
+  isPragma,
+  hasPragma,
+  insertPragma
+};
diff --git a/src/language-yaml/printer-yaml.js b/src/language-yaml/printer-yaml.js
new file mode 100644
index 000000000..8b79d428f
--- /dev/null
+++ b/src/language-yaml/printer-yaml.js
@@ -0,0 +1,506 @@
+"use strict";
+
+const { insertPragma, isPragma } = require("./pragma");
+const {
+  getAncestorCount,
+  getLast,
+  getLastDescendantNode,
+  hasExplicitDocumentEndMarker,
+  hasLeadingComments,
+  hasMiddleComments,
+  hasTrailingComments,
+  hasPrettierIgnore,
+  isLastDescendantNode,
+  isNextLineEmpty,
+  isNode,
+  isBlockValue,
+  restoreBlockFoldedValue
+} = require("./utils");
+const docBuilders = require("../doc").builders;
+const {
+  conditionalGroup,
+  breakParent,
+  concat,
+  dedent,
+  dedentToRoot,
+  fill,
+  group,
+  hardline,
+  ifBreak,
+  join,
+  line,
+  lineSuffix,
+  literalline,
+  markAsRoot,
+  softline
+} = docBuilders;
+
+function genericPrint(path, options, print) {
+  const node = path.getValue();
+  const parentNode = path.getParentNode();
+
+  const tag =
+    "tag" in node && node.tag.type !== "null" ? path.call(print, "tag") : "";
+
+  const anchor =
+    "anchor" in node && node.anchor.type !== "null"
+      ? path.call(print, "anchor")
+      : "";
+
+  const nextEmptyLine =
+    (node.type === "mapping" ||
+      node.type === "sequence" ||
+      node.type === "comment" ||
+      node.type === "directive" ||
+      node.type === "mappingItem" ||
+      node.type === "sequenceItem") &&
+    !isLastDescendantNode(path)
+      ? printNextEmptyLine(path, options.originalText)
+      : "";
+
+  return concat([
+    node.type !== "mappingValue" && hasLeadingComments(node)
+      ? concat([join(hardline, path.map(print, "leadingComments")), hardline])
+      : "",
+    tag,
+    tag && anchor ? " " : "",
+    anchor,
+    (node.type === "sequence" || node.type === "mapping") &&
+    node.middleComments.length === 0
+      ? tag || anchor
+        ? hardline
+        : ""
+      : tag || anchor
+        ? " "
+        : "",
+    hasMiddleComments(node)
+      ? concat([
+          node.middleComments.length === 1 ? "" : hardline,
+          join(hardline, path.map(print, "middleComments")),
+          hardline
+        ])
+      : "",
+    hasPrettierIgnore(path)
+      ? options.originalText.slice(
+          node.position.start.offset,
+          node.position.end.offset
+        )
+      : group(_print(node, parentNode, path, options, print)),
+    !isBlockValue(node) && hasTrailingComments(node) // trailing comments for block value are handled themselves
+      ? lineSuffix(
+          concat([
+            " ",
+            parentNode.type === "mappingKey" &&
+            path.getParentNode(2).type === "mapping" &&
+            isInlineNode(node)
+              ? ""
+              : breakParent,
+            join(hardline, path.map(print, "trailingComments"))
+          ])
+        )
+      : "",
+    nextEmptyLine
+  ]);
+}
+
+function _print(node, parentNode, path, options, print) {
+  switch (node.type) {
+    case "root":
+      return concat([
+        concat(
+          path.map(
+            (childPath, index) =>
+              index === node.children.length - 1
+                ? print(childPath)
+                : concat([
+                    print(childPath),
+                    hasTrailingComments(node.children[index]) ||
+                    (childPath.call(hasPrettierIgnore, "body") &&
+                      hasExplicitDocumentEndMarker(
+                        node.children[index],
+                        options.originalText
+                      ))
+                      ? ""
+                      : concat([hardline, "..."]),
+                    hardline
+                  ]),
+            "children"
+          )
+        ),
+        node.children.length === 0 ||
+        (lastDescendantNode =>
+          isBlockValue(lastDescendantNode) &&
+          (/[^\S\n]\n?$/.test(lastDescendantNode.value) ||
+            (lastDescendantNode.chomping === "keep" &&
+              lastDescendantNode.value === "\n")))(getLastDescendantNode(node))
+          ? ""
+          : hardline
+      ]);
+    case "document":
+      return concat([
+        node.head.children.length === 0
+          ? path.call(print, "body")
+          : join(
+              hardline,
+              [path.call(print, "head"), "---"].concat(
+                node.body.children.length === 0 ? [] : path.call(print, "body")
+              )
+            ),
+        hasTrailingComments(node) ? concat([hardline, "..."]) : ""
+      ]);
+    case "documentHead":
+    case "documentBody":
+      return join(hardline, path.map(print, "children"));
+    case "directive":
+      return concat(["%", join(" ", [node.name].concat(node.parameters))]);
+    case "comment":
+      return concat(["#", node.value]);
+    case "alias":
+      return concat(["*", node.value]);
+    case "null":
+      return "";
+    case "verbatimTag":
+      return concat(["!<", node.value, ">"]);
+    case "shorthandTag":
+      return concat([node.handle, node.suffix]);
+    case "nonSpecificTag":
+      return "!";
+    case "anchor":
+      return concat(["&", node.value]);
+    case "plain":
+      return join(hardline, node.value.replace(/\n/g, "\n\n").split("\n"));
+    case "quoteDouble":
+    case "quoteSingle": {
+      const singleQuote = "'";
+      const doubleQuote = '"';
+
+      const raw = options.originalText.slice(
+        node.position.start.offset + 1,
+        node.position.end.offset - 1
+      );
+
+      if (
+        (node.type === "quoteSingle" && raw.includes("\\")) ||
+        (node.type === "quoteDouble" && /\\[^"]/.test(raw))
+      ) {
+        // only quoteDouble can use escape chars
+        // and quoteSingle do not need to escape backslashes
+        const originalQuote =
+          node.type === "quoteDouble" ? doubleQuote : singleQuote;
+        return originalQuote + raw + originalQuote;
+      } else if (raw.includes(doubleQuote)) {
+        return (
+          singleQuote +
+          (node.type === "quoteDouble"
+            ? // double quote needs to be escaped by backslash in quoteDouble
+              raw.replace(/\\"/g, doubleQuote)
+            : raw) +
+          singleQuote
+        );
+      }
+
+      if (raw.includes(singleQuote)) {
+        return (
+          doubleQuote +
+          (node.type === "quoteSingle"
+            ? // single quote needs to be escaped by 2 single quotes in quoteSingle
+              raw.replace(/''/g, singleQuote)
+            : raw) +
+          doubleQuote
+        );
+      }
+
+      const quote = options.singleQuote ? singleQuote : doubleQuote;
+      return quote + raw + quote;
+    }
+    case "blockFolded": // TODO: --prose-wrap
+    case "blockLiteral": {
+      const value =
+        node.chomping === "strip" ||
+        (node.chomping === "clip" &&
+          options.originalText.slice(
+            node.position.end.offset - 2,
+            node.position.end.offset
+          ) === "\n\n") ||
+        (node.chomping === "keep" && node.value === "\n")
+          ? node.value
+          : node.value.replace(/\n$/, "");
+      return concat([
+        node.type === "blockFolded" ? ">" : "|",
+        node.indent === null ? "" : node.indent.toString(),
+        node.chomping === "clip" ? "" : node.chomping === "keep" ? "+" : "-",
+        hasTrailingComments(node)
+          ? concat([" ", join(hardline, path.map(print, "trailingComments"))])
+          : "",
+        value === ""
+          ? ""
+          : (node.indent === null ? dedent : dedentToRoot)(
+              align(
+                node.indent === null
+                  ? options.tabWidth
+                  : node.indent -
+                    1 +
+                    getAncestorCount(
+                      path,
+                      ancestorNode =>
+                        ancestorNode.type === "sequence" ||
+                        ancestorNode.type === "mapping"
+                    ),
+                (node.chomping === "keep" && node.value === "\n"
+                  ? dedentToRoot
+                  : markAsRoot)(
+                  concat(
+                    (node.type === "blockLiteral"
+                      ? value
+                      : restoreBlockFoldedValue(value)
+                    )
+                      .split("\n")
+                      .reduce(
+                        (reduced, lineContent, index, lines) =>
+                          reduced.concat(
+                            node.type === "blockLiteral"
+                              ? lineContent
+                              : fill(
+                                  join(
+                                    line,
+                                    lineContent
+                                      // split by single space
+                                      .replace(/(^|[^ ]) ([^ ]|$)/g, "$1\n$2")
+                                      .split("\n")
+                                  ).parts
+                                ),
+                            index === lines.length - 1 &&
+                            !/\s$/.test(lineContent)
+                              ? []
+                              : /\s$/.test(lineContent)
+                                ? index === lines.length - 1
+                                  ? dedentToRoot(literalline)
+                                  : literalline
+                                : hardline
+                          ),
+                        [hardline]
+                      )
+                  )
+                )
+              )
+            )
+      ]);
+    }
+    case "sequence":
+      return join(hardline, path.map(print, "children"));
+    case "sequenceItem":
+      return concat(["- ", align(2, path.call(print, "node"))]);
+    case "mappingKey":
+      return path.call(print, "node");
+    case "mappingValue":
+      return path.call(print, "node");
+    case "mapping":
+      return join(hardline, path.map(print, "children"));
+    case "mappingItem":
+    case "flowMappingItem": {
+      if (node.key.type === "null" && node.value.type === "null") {
+        return concat([":", line]);
+      }
+
+      const key = path.call(print, "key");
+      const value = path.call(print, "value");
+
+      if (node.value.type === "null") {
+        return node.type === "flowMappingItem" &&
+          path.getParentNode().type !== "flowSequence"
+          ? key
+          : concat(["? ", align(2, key)]);
+      }
+
+      if (node.key.type === "null") {
+        return concat([
+          ":",
+          node.value.node.type === "null" ? "" : " ",
+          align(2, value)
+        ]);
+      }
+
+      const groupId = Symbol("mappingKey");
+
+      const forceExplicitKey =
+        hasLeadingComments(node.value) ||
+        (node.key.type !== "null" && !isInlineNode(node.key.node));
+      return forceExplicitKey
+        ? concat([
+            "? ",
+            align(2, key),
+            hardline,
+            join(
+              "",
+              path
+                .map(print, "value", "leadingComments")
+                .map(comment => concat([comment, hardline]))
+            ),
+            ": ",
+            align(2, value)
+          ])
+        : conditionalGroup([
+            concat([
+              group(
+                concat([ifBreak("? "), group(align(2, key), { id: groupId })])
+              ),
+              ifBreak(
+                concat([hardline, ": ", align(2, value)]),
+                indent(
+                  concat([
+                    needsSpaceInFrontOfMappingValue(node) ? " " : "",
+                    ":",
+                    hasLeadingComments(node.value.node) ||
+                    (parentNode.type === "mapping" &&
+                      hasTrailingComments(node.key.node) &&
+                      isInlineNode(node.value.node)) ||
+                    ((node.value.node.type === "mapping" ||
+                      node.value.node.type === "sequence") &&
+                      node.value.node.tag.type === "null" &&
+                      node.value.node.anchor.type === "null")
+                      ? hardline
+                      : node.value.node.type === "null"
+                        ? ""
+                        : line,
+                    value
+                  ])
+                ),
+                { groupId }
+              )
+            ])
+          ]);
+    }
+    case "flowMapping":
+    case "flowSequence": {
+      const openMarker = node.type === "flowMapping" ? "{" : "[";
+      const closeMarker = node.type === "flowMapping" ? "}" : "]";
+      const bracketSpacing =
+        node.type === "flowMapping" &&
+        node.children.length !== 0 &&
+        options.bracketSpacing
+          ? line
+          : softline;
+      const isLastItemEmptyMappingItem =
+        node.children.length !== 0 &&
+        (lastItem =>
+          lastItem.type === "flowMappingItem" &&
+          lastItem.key.type === "null" &&
+          lastItem.value.type === "null")(getLast(node.children));
+      return concat([
+        openMarker,
+        indent(
+          concat([
+            bracketSpacing,
+            concat(
+              path.map(
+                (childPath, index) =>
+                  concat([
+                    print(childPath),
+                    index === node.children.length - 1
+                      ? ""
+                      : concat([
+                          ",",
+                          line,
+                          node.children[index].position.start.line !==
+                          node.children[index + 1].position.start.line
+                            ? printNextEmptyLine(
+                                childPath,
+                                options.originalText
+                              )
+                            : ""
+                        ])
+                  ]),
+                "children"
+              )
+            ),
+            ifBreak(",", "")
+          ])
+        ),
+        isLastItemEmptyMappingItem ? "" : bracketSpacing,
+        closeMarker
+      ]);
+    }
+    case "flowSequenceItem":
+      return path.call(print, "node");
+    // istanbul ignore next
+    default:
+      throw new Error(`Unexpected node type ${node.type}`);
+  }
+
+  function indent(doc) {
+    return docBuilders.align(" ".repeat(options.tabWidth), doc);
+  }
+
+  function align(n, doc) {
+    return typeof n === "number" && n > 0
+      ? docBuilders.align(" ".repeat(n), doc)
+      : docBuilders.align(n, doc);
+  }
+}
+
+function isInlineNode(node) {
+  switch (node.type) {
+    case "plain":
+    case "quoteDouble":
+    case "quoteSingle":
+    case "alias":
+    case "flowMapping":
+    case "flowSequence":
+    case "null":
+      return true;
+    default:
+      return false;
+  }
+}
+
+function needsSpaceInFrontOfMappingValue(node) {
+  // istanbul ignore else
+  if (node.key.type !== "null") {
+    switch (node.key.node.type) {
+      case "alias":
+        return true;
+    }
+  }
+  return false;
+}
+
+function printNextEmptyLine(path, originalText) {
+  const node = path.getValue();
+  const root = path.stack[0];
+
+  root.isNextEmptyLinePrintedChecklist =
+    root.isNextEmptyLinePrintedChecklist || [];
+
+  if (!root.isNextEmptyLinePrintedChecklist[node.position.end.line]) {
+    if (isNextLineEmpty(node, originalText)) {
+      root.isNextEmptyLinePrintedChecklist[node.position.end.line] = true;
+      return softline;
+    }
+  }
+
+  return "";
+}
+
+function clean(node, newNode /*, parent */) {
+  if (isNode(newNode)) {
+    delete newNode.position;
+    switch (newNode.type) {
+      case "comment":
+        // insert pragma
+        if (isPragma(newNode.value)) {
+          return null;
+        }
+        break;
+      case "quoteDouble":
+      case "quoteSingle":
+        newNode.type = "quote";
+        break;
+    }
+  }
+}
+
+module.exports = {
+  print: genericPrint,
+  massageAstNode: clean,
+  insertPragma
+};
diff --git a/src/language-yaml/utils.js b/src/language-yaml/utils.js
new file mode 100644
index 000000000..bf6d4c82d
--- /dev/null
+++ b/src/language-yaml/utils.js
@@ -0,0 +1,206 @@
+"use strict";
+
+function getLast(array) {
+  return array[array.length - 1];
+}
+
+function getAncestorCount(path, filter) {
+  let counter = 0;
+  for (let i = 0; i < path.stack.length - 1; i++) {
+    const value = path.stack[i];
+    if (isNode(value) && filter(value)) {
+      counter++;
+    }
+  }
+  return counter;
+}
+
+function isNode(value) {
+  return value && typeof value.type === "string";
+}
+
+function mapNode(node, callback, parent) {
+  return callback(
+    "children" in node
+      ? Object.assign({}, node, {
+          children: node.children.map(childNode =>
+            mapNode(childNode, callback, node)
+          )
+        })
+      : node,
+    parent
+  );
+}
+
+function defineShortcut(x, key, getter) {
+  Object.defineProperty(x, key, {
+    get: getter,
+    enumerable: false
+  });
+}
+
+function createNull() {
+  return {
+    type: "null",
+    position: {
+      start: { line: -1, column: -1, offset: -1 },
+      end: { line: -1, column: -1, offset: -1 }
+    }
+  };
+}
+
+function isNextLineEmpty(node, text) {
+  let newlineCount = 0;
+
+  for (let i = node.position.end.offset - 1; i < text.length; i++) {
+    const char = text[i];
+
+    if (char === "\n") {
+      newlineCount++;
+    }
+
+    if (newlineCount === 1 && /\S/.test(char)) {
+      return false;
+    }
+
+    if (newlineCount === 2) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+function isLastDescendantNode(path) {
+  const node = path.getValue();
+
+  switch (node.type) {
+    case "comment":
+    case "verbatimTag":
+    case "shorthandTag":
+    case "nonSpecificTag":
+      return false;
+  }
+
+  for (let i = 1; i < path.stack.length; i++) {
+    const item = path.stack[i];
+    const parentItem = path.stack[i - 1];
+
+    if (
+      Array.isArray(parentItem) &&
+      typeof item === "number" &&
+      item !== parentItem.length - 1
+    ) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+function getLastDescendantNode(node) {
+  return "children" in node && node.children.length !== 0
+    ? getLastDescendantNode(getLast(node.children))
+    : node;
+}
+
+function isPrettierIgnore(comment) {
+  return comment.value.trim() === "prettier-ignore";
+}
+
+function hasPrettierIgnore(path) {
+  const node = path.getValue();
+
+  if (node.type === "documentBody") {
+    const document = path.getParentNode();
+    return (
+      document.head.children.length !== 0 &&
+      (lastItem => lastItem.type === "comment" && isPrettierIgnore(lastItem))(
+        getLast(document.head.children)
+      )
+    );
+  }
+
+  return (
+    "leadingComments" in node &&
+    node.leadingComments.length !== 0 &&
+    isPrettierIgnore(getLast(node.leadingComments))
+  );
+}
+
+function hasExplicitDocumentEndMarker(document, text) {
+  return (
+    text.slice(
+      document.position.end.offset - 4,
+      document.position.end.offset
+    ) === "\n..."
+  );
+}
+
+function restoreBlockFoldedValue(value) {
+  const lines = value.split("\n");
+
+  let hasChecked = false;
+  let isIndented = false;
+  for (let i = 0; i < lines.length; i++) {
+    const lineContent = lines[i];
+
+    if (!lineContent) {
+      continue;
+    }
+
+    if (/^\s/.test(lineContent[0])) {
+      isIndented = true;
+    } else {
+      if (!isIndented && i !== 0 && hasChecked) {
+        lines[i] = "\n" + lineContent;
+      }
+      isIndented = false;
+    }
+
+    hasChecked = true;
+  }
+
+  return lines.join("\n");
+}
+
+function isBlockValue(node) {
+  switch (node.type) {
+    case "blockFolded":
+    case "blockLiteral":
+      return true;
+    default:
+      return false;
+  }
+}
+
+function hasLeadingComments(node) {
+  return "leadingComments" in node && node.leadingComments.length !== 0;
+}
+
+function hasMiddleComments(node) {
+  return "middleComments" in node && node.middleComments.length !== 0;
+}
+
+function hasTrailingComments(node) {
+  return "trailingComments" in node && node.trailingComments.length !== 0;
+}
+
+module.exports = {
+  getLast,
+  getAncestorCount,
+  isNode,
+  isBlockValue,
+  mapNode,
+  defineShortcut,
+  createNull,
+  isNextLineEmpty,
+  isLastDescendantNode,
+  getLastDescendantNode,
+  hasPrettierIgnore,
+  hasLeadingComments,
+  hasMiddleComments,
+  hasTrailingComments,
+  hasExplicitDocumentEndMarker,
+  restoreBlockFoldedValue
+};
diff --git a/src/main/core-options.js b/src/main/core-options.js
index 37bd07108..10d2d476e 100644
--- a/src/main/core-options.js
+++ b/src/main/core-options.js
@@ -115,7 +115,8 @@ const options = {
       },
       { value: "graphql", since: "1.5.0", description: "GraphQL" },
       { value: "markdown", since: "1.8.0", description: "Markdown" },
-      { value: "vue", since: "1.10.0", description: "Vue" }
+      { value: "vue", since: "1.10.0", description: "Vue" },
+      { value: "yaml", since: "1.14.0", description: "YAML" }
     ]
   },
   plugins: {
diff --git a/standalone.js b/standalone.js
index f5db43496..31acc6d33 100644
--- a/standalone.js
+++ b/standalone.js
@@ -13,7 +13,8 @@ const internalPlugins = [
   require("./src/language-css"),
   require("./src/language-graphql"),
   require("./src/language-markdown"),
-  require("./src/language-vue")
+  require("./src/language-vue"),
+  require("./src/language-yaml")
 ];
 
 const isArray =
diff --git a/tests/markdown/__snapshots__/jsfmt.spec.js.snap b/tests/markdown/__snapshots__/jsfmt.spec.js.snap
index b5ca19faf..0ec951260 100644
--- a/tests/markdown/__snapshots__/jsfmt.spec.js.snap
+++ b/tests/markdown/__snapshots__/jsfmt.spec.js.snap
@@ -1392,10 +1392,10 @@ how you can configure lint-staged.
 Copy the following config into your \`.pre-commit-config.yaml\` file:
 
 \`\`\`yaml
-    -   repo: https://github.com/prettier/prettier
-        sha: ''  # Use the sha or tag you want to point at
-        hooks:
-        -   id: prettier
+- repo: https://github.com/prettier/prettier
+  sha: "" # Use the sha or tag you want to point at
+  hooks:
+    - id: prettier
 \`\`\`
 
 Find more info from [here](https://pre-commit.com).
@@ -1801,9 +1801,9 @@ YAML:
 \`\`\`yaml
 semi: false
 overrides:
-- files: "*.test.js"
-  options:
-    semi: true
+  - files: "*.test.js"
+    options:
+      semi: true
 \`\`\`
 
 \`files\` is required for each override, and may be a string or array of strings.
@@ -3363,10 +3363,10 @@ how you can configure lint-staged.
 Copy the following config into your \`.pre-commit-config.yaml\` file:
 
 \`\`\`yaml
-    -   repo: https://github.com/prettier/prettier
-        sha: ''  # Use the sha or tag you want to point at
-        hooks:
-        -   id: prettier
+- repo: https://github.com/prettier/prettier
+  sha: '' # Use the sha or tag you want to point at
+  hooks:
+    - id: prettier
 \`\`\`
 
 Find more info from [here](https://pre-commit.com).
@@ -3772,9 +3772,9 @@ YAML:
 \`\`\`yaml
 semi: false
 overrides:
-- files: "*.test.js"
-  options:
-    semi: true
+  - files: '*.test.js'
+    options:
+      semi: true
 \`\`\`
 
 \`files\` is required for each override, and may be a string or array of strings.
diff --git a/tests/yaml_alias/__snapshots__/jsfmt.spec.js.snap b/tests/yaml_alias/__snapshots__/jsfmt.spec.js.snap
new file mode 100644
index 000000000..b14c01d8f
--- /dev/null
+++ b/tests/yaml_alias/__snapshots__/jsfmt.spec.js.snap
@@ -0,0 +1,8 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`common.yml 1`] = `
+*abc
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+*abc
+
+`;
diff --git a/tests/yaml_alias/common.yml b/tests/yaml_alias/common.yml
new file mode 100644
index 000000000..cd06d36f1
--- /dev/null
+++ b/tests/yaml_alias/common.yml
@@ -0,0 +1 @@
+*abc
diff --git a/tests/yaml_alias/jsfmt.spec.js b/tests/yaml_alias/jsfmt.spec.js
new file mode 100644
index 000000000..89d18c007
--- /dev/null
+++ b/tests/yaml_alias/jsfmt.spec.js
@@ -0,0 +1 @@
+run_spec(__dirname, ["yaml"]);
diff --git a/tests/yaml_block_folded/__snapshots__/jsfmt.spec.js.snap b/tests/yaml_block_folded/__snapshots__/jsfmt.spec.js.snap
new file mode 100644
index 000000000..af4969711
--- /dev/null
+++ b/tests/yaml_block_folded/__snapshots__/jsfmt.spec.js.snap
@@ -0,0 +1,328 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`clip.yml 1`] = `
+>
+    123
+    456
+    789
+
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+>
+  123 456 789
+
+`;
+
+exports[`indent.yml 1`] = `
+>2-
+    123
+   456
+  789
+
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+>2-
+    123
+   456
+  789
+
+`;
+
+exports[`keep.yml 1`] = `
+>+
+    123
+    456
+    789
+
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+>+
+  123 456 789
+
+
+
+`;
+
+exports[`map.yml 1`] = `
+a: >
+  123
+  456
+  789
+b: >1
+    123
+   456
+  789
+d: >
+  123
+  456
+  789
+
+c: 0
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: >
+  123 456 789
+b: >1
+    123
+   456
+  789
+d: >
+  123 456 789
+
+c: 0
+
+`;
+
+exports[`middle-comment.yml 1`] = `
+!!str #comment
+>
+  123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!str #comment
+>
+  123
+
+`;
+
+exports[`middle-comments.yml 1`] = `
+!!str # comment 1
+# comment 2
+>
+  123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!str
+# comment 1
+# comment 2
+>
+  123
+
+`;
+
+exports[`newline.yml 1`] = `
+- >+
+  123
+  456
+  789
+
+  123
+  456
+  789
+
+
+  123
+  456
+  789
+
+
+- >2+
+  123
+  456
+  789
+
+  123
+  456
+  789
+
+
+  123
+  456
+  789
+
+- 0
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- >+
+  123 456 789
+
+  123 456 789
+
+
+  123 456 789
+
+
+- >2+
+  123 456 789
+
+  123 456 789
+
+
+  123 456 789
+
+- 0
+
+`;
+
+exports[`newline-unaligned.yml 1`] = `
+>
+  1
+  2
+    3
+    4
+  5
+  6
+
+  1
+  2
+    3
+    4
+  5
+  6
+
+
+  1
+  2
+    3
+    4
+  5
+  6
+
+  1
+  2
+
+    3
+    4
+
+  5
+  6
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+>
+  1 2
+    3
+    4
+  5 6
+
+  1 2
+    3
+    4
+  5 6
+
+
+  1 2
+    3
+    4
+  5 6
+
+  1 2
+
+    3
+    4
+
+  5 6
+
+`;
+
+exports[`props.yml 1`] = `
+!!str &anchor >
+  123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!str &anchor >
+  123
+
+`;
+
+exports[`props-in-map.yml 1`] = `
+a: !!str &anchor >
+  123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: !!str &anchor >
+  123
+
+`;
+
+exports[`prose.yml 1`] = `
+>
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+---
+> 
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+>
+  123 456 789 123 456 789 123 456 789 123 456 789 123 456 789 123 456 789 123
+  456 789 123 456 789 123 456 789 123 456 789 123 456 789 123 456 789 123 456
+  789 123 456 789 123 456 789 123 456 789 123 456 789 123 456 789 123 456 789
+...
+>
+  123   456   789 123   456   789 123   456   789 123   456   789
+  123   456   789 123   456   789 123   456   789 123   456   789
+  123   456   789 123   456   789 123   456   789 123   456   789
+  123   456   789 123   456   789 123   456   789 123   456   789
+  123   456   789 123   456   789 123   456   789
+
+`;
+
+exports[`seq.yml 1`] = `
+- >
+  123
+  456
+  789
+- >1
+    123
+   456
+  789
+- 0
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- >
+  123 456 789
+- >1
+    123
+   456
+  789
+- 0
+
+`;
+
+exports[`strip.yml 1`] = `
+>-
+    123
+    456
+    789
+
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+>-
+  123 456 789
+
+`;
+
+exports[`trailing-comment.yml 1`] = `
+a: !!str > # hello
+  hello
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: !!str > # hello
+  hello
+
+`;
diff --git a/tests/yaml_block_folded/clip.yml b/tests/yaml_block_folded/clip.yml
new file mode 100644
index 000000000..b71e0cbab
--- /dev/null
+++ b/tests/yaml_block_folded/clip.yml
@@ -0,0 +1,6 @@
+>
+    123
+    456
+    789
+
+
diff --git a/tests/yaml_block_folded/indent.yml b/tests/yaml_block_folded/indent.yml
new file mode 100644
index 000000000..3716b41f8
--- /dev/null
+++ b/tests/yaml_block_folded/indent.yml
@@ -0,0 +1,6 @@
+>2-
+    123
+   456
+  789
+
+
diff --git a/tests/yaml_block_folded/jsfmt.spec.js b/tests/yaml_block_folded/jsfmt.spec.js
new file mode 100644
index 000000000..89d18c007
--- /dev/null
+++ b/tests/yaml_block_folded/jsfmt.spec.js
@@ -0,0 +1 @@
+run_spec(__dirname, ["yaml"]);
diff --git a/tests/yaml_block_folded/keep.yml b/tests/yaml_block_folded/keep.yml
new file mode 100644
index 000000000..080ccbc8d
--- /dev/null
+++ b/tests/yaml_block_folded/keep.yml
@@ -0,0 +1,6 @@
+>+
+    123
+    456
+    789
+
+
diff --git a/tests/yaml_block_folded/map.yml b/tests/yaml_block_folded/map.yml
new file mode 100644
index 000000000..44b24d27a
--- /dev/null
+++ b/tests/yaml_block_folded/map.yml
@@ -0,0 +1,14 @@
+a: >
+  123
+  456
+  789
+b: >1
+    123
+   456
+  789
+d: >
+  123
+  456
+  789
+
+c: 0
diff --git a/tests/yaml_block_folded/middle-comment.yml b/tests/yaml_block_folded/middle-comment.yml
new file mode 100644
index 000000000..67f44c42e
--- /dev/null
+++ b/tests/yaml_block_folded/middle-comment.yml
@@ -0,0 +1,3 @@
+!!str #comment
+>
+  123
diff --git a/tests/yaml_block_folded/middle-comments.yml b/tests/yaml_block_folded/middle-comments.yml
new file mode 100644
index 000000000..61315dec1
--- /dev/null
+++ b/tests/yaml_block_folded/middle-comments.yml
@@ -0,0 +1,4 @@
+!!str # comment 1
+# comment 2
+>
+  123
diff --git a/tests/yaml_block_folded/newline-unaligned.yml b/tests/yaml_block_folded/newline-unaligned.yml
new file mode 100644
index 000000000..4e8080eb3
--- /dev/null
+++ b/tests/yaml_block_folded/newline-unaligned.yml
@@ -0,0 +1,31 @@
+>
+  1
+  2
+    3
+    4
+  5
+  6
+
+  1
+  2
+    3
+    4
+  5
+  6
+
+
+  1
+  2
+    3
+    4
+  5
+  6
+
+  1
+  2
+
+    3
+    4
+
+  5
+  6
diff --git a/tests/yaml_block_folded/newline.yml b/tests/yaml_block_folded/newline.yml
new file mode 100644
index 000000000..d2e207bf5
--- /dev/null
+++ b/tests/yaml_block_folded/newline.yml
@@ -0,0 +1,30 @@
+- >+
+  123
+  456
+  789
+
+  123
+  456
+  789
+
+
+  123
+  456
+  789
+
+
+- >2+
+  123
+  456
+  789
+
+  123
+  456
+  789
+
+
+  123
+  456
+  789
+
+- 0
diff --git a/tests/yaml_block_folded/props-in-map.yml b/tests/yaml_block_folded/props-in-map.yml
new file mode 100644
index 000000000..574f3296c
--- /dev/null
+++ b/tests/yaml_block_folded/props-in-map.yml
@@ -0,0 +1,2 @@
+a: !!str &anchor >
+  123
diff --git a/tests/yaml_block_folded/props.yml b/tests/yaml_block_folded/props.yml
new file mode 100644
index 000000000..78348a247
--- /dev/null
+++ b/tests/yaml_block_folded/props.yml
@@ -0,0 +1,2 @@
+!!str &anchor >
+  123
diff --git a/tests/yaml_block_folded/prose.yml b/tests/yaml_block_folded/prose.yml
new file mode 100644
index 000000000..f4988adc8
--- /dev/null
+++ b/tests/yaml_block_folded/prose.yml
@@ -0,0 +1,41 @@
+>
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+  123 456 789
+---
+> 
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
+  123   456   789
diff --git a/tests/yaml_block_folded/seq.yml b/tests/yaml_block_folded/seq.yml
new file mode 100644
index 000000000..a356d9336
--- /dev/null
+++ b/tests/yaml_block_folded/seq.yml
@@ -0,0 +1,9 @@
+- >
+  123
+  456
+  789
+- >1
+    123
+   456
+  789
+- 0
diff --git a/tests/yaml_block_folded/strip.yml b/tests/yaml_block_folded/strip.yml
new file mode 100644
index 000000000..aa90ec566
--- /dev/null
+++ b/tests/yaml_block_folded/strip.yml
@@ -0,0 +1,6 @@
+>-
+    123
+    456
+    789
+
+
diff --git a/tests/yaml_block_folded/trailing-comment.yml b/tests/yaml_block_folded/trailing-comment.yml
new file mode 100644
index 000000000..3fa886658
--- /dev/null
+++ b/tests/yaml_block_folded/trailing-comment.yml
@@ -0,0 +1,2 @@
+a: !!str > # hello
+  hello
diff --git a/tests/yaml_block_literal/__snapshots__/jsfmt.spec.js.snap b/tests/yaml_block_literal/__snapshots__/jsfmt.spec.js.snap
new file mode 100644
index 000000000..52da19fc2
--- /dev/null
+++ b/tests/yaml_block_literal/__snapshots__/jsfmt.spec.js.snap
@@ -0,0 +1,259 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`clip.yml 1`] = `
+|
+    123
+    456
+    789
+
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+|
+  123
+  456
+  789
+
+`;
+
+exports[`indent.yml 1`] = `
+|2-
+    123
+   456
+  789
+
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+|2-
+    123
+   456
+  789
+
+`;
+
+exports[`keep.yml 1`] = `
+|+
+    123
+    456
+    789
+
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+|+
+  123
+  456
+  789
+
+
+
+`;
+
+exports[`map.yml 1`] = `
+a: |
+  123
+  456
+  789
+b: |1
+    123
+   456
+  789
+d: |
+  123
+  456
+  789
+
+c: 0
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: |
+  123
+  456
+  789
+b: |1
+    123
+   456
+  789
+d: |
+  123
+  456
+  789
+
+c: 0
+
+`;
+
+exports[`middle-comment.yml 1`] = `
+!!str #comment
+|
+  123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!str #comment
+|
+  123
+
+`;
+
+exports[`middle-comments.yml 1`] = `
+!!str # comment 1
+# comment 2
+|
+  123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!str
+# comment 1
+# comment 2
+|
+  123
+
+`;
+
+exports[`newline.yml 1`] = `
+- |+
+  123
+  456
+  789
+
+
+
+- 0
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- |+
+  123
+  456
+  789
+
+
+
+- 0
+
+`;
+
+exports[`newline-unaligned.yml 1`] = `
+|
+  1
+  2
+    3
+    4
+  5
+  6
+
+  1
+  2
+    3
+    4
+  5
+  6
+
+
+  1
+  2
+    3
+    4
+  5
+  6
+
+  1
+  2
+
+    3
+    4
+
+  5
+  6
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+|
+  1
+  2
+    3
+    4
+  5
+  6
+
+  1
+  2
+    3
+    4
+  5
+  6
+
+
+  1
+  2
+    3
+    4
+  5
+  6
+
+  1
+  2
+
+    3
+    4
+
+  5
+  6
+
+`;
+
+exports[`props.yml 1`] = `
+!!str &anchor |
+  123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!str &anchor |
+  123
+
+`;
+
+exports[`props-in-map.yml 1`] = `
+a: !!str &anchor |
+  123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: !!str &anchor |
+  123
+
+`;
+
+exports[`seq.yml 1`] = `
+- |
+  123
+  456
+  789
+- |1
+    123
+   456
+  789
+- 0
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- |
+  123
+  456
+  789
+- |1
+    123
+   456
+  789
+- 0
+
+`;
+
+exports[`strip.yml 1`] = `
+|-
+    123
+    456
+    789
+
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+|-
+  123
+  456
+  789
+
+`;
+
+exports[`trailing-comment.yml 1`] = `
+a: !!str | # hello
+  hello
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: !!str | # hello
+  hello
+
+`;
diff --git a/tests/yaml_block_literal/clip.yml b/tests/yaml_block_literal/clip.yml
new file mode 100644
index 000000000..c3e388c27
--- /dev/null
+++ b/tests/yaml_block_literal/clip.yml
@@ -0,0 +1,6 @@
+|
+    123
+    456
+    789
+
+
diff --git a/tests/yaml_block_literal/indent.yml b/tests/yaml_block_literal/indent.yml
new file mode 100644
index 000000000..bf69744b1
--- /dev/null
+++ b/tests/yaml_block_literal/indent.yml
@@ -0,0 +1,6 @@
+|2-
+    123
+   456
+  789
+
+
diff --git a/tests/yaml_block_literal/jsfmt.spec.js b/tests/yaml_block_literal/jsfmt.spec.js
new file mode 100644
index 000000000..89d18c007
--- /dev/null
+++ b/tests/yaml_block_literal/jsfmt.spec.js
@@ -0,0 +1 @@
+run_spec(__dirname, ["yaml"]);
diff --git a/tests/yaml_block_literal/keep.yml b/tests/yaml_block_literal/keep.yml
new file mode 100644
index 000000000..572f76a34
--- /dev/null
+++ b/tests/yaml_block_literal/keep.yml
@@ -0,0 +1,6 @@
+|+
+    123
+    456
+    789
+
+
diff --git a/tests/yaml_block_literal/map.yml b/tests/yaml_block_literal/map.yml
new file mode 100644
index 000000000..c425ec6ea
--- /dev/null
+++ b/tests/yaml_block_literal/map.yml
@@ -0,0 +1,14 @@
+a: |
+  123
+  456
+  789
+b: |1
+    123
+   456
+  789
+d: |
+  123
+  456
+  789
+
+c: 0
diff --git a/tests/yaml_block_literal/middle-comment.yml b/tests/yaml_block_literal/middle-comment.yml
new file mode 100644
index 000000000..5bbe289c6
--- /dev/null
+++ b/tests/yaml_block_literal/middle-comment.yml
@@ -0,0 +1,3 @@
+!!str #comment
+|
+  123
diff --git a/tests/yaml_block_literal/middle-comments.yml b/tests/yaml_block_literal/middle-comments.yml
new file mode 100644
index 000000000..8b880d76c
--- /dev/null
+++ b/tests/yaml_block_literal/middle-comments.yml
@@ -0,0 +1,4 @@
+!!str # comment 1
+# comment 2
+|
+  123
diff --git a/tests/yaml_block_literal/newline-unaligned.yml b/tests/yaml_block_literal/newline-unaligned.yml
new file mode 100644
index 000000000..85cdff5ef
--- /dev/null
+++ b/tests/yaml_block_literal/newline-unaligned.yml
@@ -0,0 +1,31 @@
+|
+  1
+  2
+    3
+    4
+  5
+  6
+
+  1
+  2
+    3
+    4
+  5
+  6
+
+
+  1
+  2
+    3
+    4
+  5
+  6
+
+  1
+  2
+
+    3
+    4
+
+  5
+  6
diff --git a/tests/yaml_block_literal/newline.yml b/tests/yaml_block_literal/newline.yml
new file mode 100644
index 000000000..a19ba5a12
--- /dev/null
+++ b/tests/yaml_block_literal/newline.yml
@@ -0,0 +1,8 @@
+- |+
+  123
+  456
+  789
+
+
+
+- 0
diff --git a/tests/yaml_block_literal/props-in-map.yml b/tests/yaml_block_literal/props-in-map.yml
new file mode 100644
index 000000000..a0db13508
--- /dev/null
+++ b/tests/yaml_block_literal/props-in-map.yml
@@ -0,0 +1,2 @@
+a: !!str &anchor |
+  123
diff --git a/tests/yaml_block_literal/props.yml b/tests/yaml_block_literal/props.yml
new file mode 100644
index 000000000..63b029a58
--- /dev/null
+++ b/tests/yaml_block_literal/props.yml
@@ -0,0 +1,2 @@
+!!str &anchor |
+  123
diff --git a/tests/yaml_block_literal/seq.yml b/tests/yaml_block_literal/seq.yml
new file mode 100644
index 000000000..e06beae56
--- /dev/null
+++ b/tests/yaml_block_literal/seq.yml
@@ -0,0 +1,9 @@
+- |
+  123
+  456
+  789
+- |1
+    123
+   456
+  789
+- 0
diff --git a/tests/yaml_block_literal/strip.yml b/tests/yaml_block_literal/strip.yml
new file mode 100644
index 000000000..3b38cd4cc
--- /dev/null
+++ b/tests/yaml_block_literal/strip.yml
@@ -0,0 +1,6 @@
+|-
+    123
+    456
+    789
+
+
diff --git a/tests/yaml_block_literal/trailing-comment.yml b/tests/yaml_block_literal/trailing-comment.yml
new file mode 100644
index 000000000..7178f1507
--- /dev/null
+++ b/tests/yaml_block_literal/trailing-comment.yml
@@ -0,0 +1,2 @@
+a: !!str | # hello
+  hello
diff --git a/tests/yaml_comment/__snapshots__/jsfmt.spec.js.snap b/tests/yaml_comment/__snapshots__/jsfmt.spec.js.snap
new file mode 100644
index 000000000..61cfdf427
--- /dev/null
+++ b/tests/yaml_comment/__snapshots__/jsfmt.spec.js.snap
@@ -0,0 +1,17 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`root.yml 1`] = `
+#hello world
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+#hello world
+
+`;
+
+exports[`set.yml 1`] = `
+- 123
+  # 456
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- 123
+# 456
+
+`;
diff --git a/tests/yaml_comment/jsfmt.spec.js b/tests/yaml_comment/jsfmt.spec.js
new file mode 100644
index 000000000..89d18c007
--- /dev/null
+++ b/tests/yaml_comment/jsfmt.spec.js
@@ -0,0 +1 @@
+run_spec(__dirname, ["yaml"]);
diff --git a/tests/yaml_comment/root.yml b/tests/yaml_comment/root.yml
new file mode 100644
index 000000000..759f3c31e
--- /dev/null
+++ b/tests/yaml_comment/root.yml
@@ -0,0 +1 @@
+#hello world
diff --git a/tests/yaml_comment/set.yml b/tests/yaml_comment/set.yml
new file mode 100644
index 000000000..4338fc489
--- /dev/null
+++ b/tests/yaml_comment/set.yml
@@ -0,0 +1,2 @@
+- 123
+  # 456
diff --git a/tests/yaml_directive/__snapshots__/jsfmt.spec.js.snap b/tests/yaml_directive/__snapshots__/jsfmt.spec.js.snap
new file mode 100644
index 000000000..89e8de075
--- /dev/null
+++ b/tests/yaml_directive/__snapshots__/jsfmt.spec.js.snap
@@ -0,0 +1,19 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`with-parameters.yml 1`] = `
+%YAML 1.2
+---
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+%YAML 1.2
+---
+
+`;
+
+exports[`without-parameters.yml 1`] = `
+%SOMETHING
+---
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+%SOMETHING
+---
+
+`;
diff --git a/tests/yaml_directive/jsfmt.spec.js b/tests/yaml_directive/jsfmt.spec.js
new file mode 100644
index 000000000..89d18c007
--- /dev/null
+++ b/tests/yaml_directive/jsfmt.spec.js
@@ -0,0 +1 @@
+run_spec(__dirname, ["yaml"]);
diff --git a/tests/yaml_directive/with-parameters.yml b/tests/yaml_directive/with-parameters.yml
new file mode 100644
index 000000000..b97ec8385
--- /dev/null
+++ b/tests/yaml_directive/with-parameters.yml
@@ -0,0 +1,2 @@
+%YAML 1.2
+---
diff --git a/tests/yaml_directive/without-parameters.yml b/tests/yaml_directive/without-parameters.yml
new file mode 100644
index 000000000..631fef23e
--- /dev/null
+++ b/tests/yaml_directive/without-parameters.yml
@@ -0,0 +1,2 @@
+%SOMETHING
+---
diff --git a/tests/yaml_document/__snapshots__/jsfmt.spec.js.snap b/tests/yaml_document/__snapshots__/jsfmt.spec.js.snap
new file mode 100644
index 000000000..86995c12a
--- /dev/null
+++ b/tests/yaml_document/__snapshots__/jsfmt.spec.js.snap
@@ -0,0 +1,20 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`directives-and-comments.yml 1`] = `
+# 123
+%YAML 1.2
+# 456
+---
+# 789
+test
+# 000
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+# 123
+%YAML 1.2
+# 456
+---
+# 789
+test
+# 000
+
+`;
diff --git a/tests/yaml_document/directives-and-comments.yml b/tests/yaml_document/directives-and-comments.yml
new file mode 100644
index 000000000..4a095274b
--- /dev/null
+++ b/tests/yaml_document/directives-and-comments.yml
@@ -0,0 +1,7 @@
+# 123
+%YAML 1.2
+# 456
+---
+# 789
+test
+# 000
diff --git a/tests/yaml_document/jsfmt.spec.js b/tests/yaml_document/jsfmt.spec.js
new file mode 100644
index 000000000..89d18c007
--- /dev/null
+++ b/tests/yaml_document/jsfmt.spec.js
@@ -0,0 +1 @@
+run_spec(__dirname, ["yaml"]);
diff --git a/tests/yaml_flow_mapping/__snapshots__/jsfmt.spec.js.snap b/tests/yaml_flow_mapping/__snapshots__/jsfmt.spec.js.snap
new file mode 100644
index 000000000..97def7af4
--- /dev/null
+++ b/tests/yaml_flow_mapping/__snapshots__/jsfmt.spec.js.snap
@@ -0,0 +1,913 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`alias-key.yml 1`] = `
+{*123 : 456}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ *123 : 456 }
+
+`;
+
+exports[`alias-key.yml 2`] = `
+{*123 : 456}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ *123 : 456 }
+
+`;
+
+exports[`alias-key.yml 3`] = `
+{*123 : 456}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{*123 : 456}
+
+`;
+
+exports[`array-key.yml 1`] = `
+{? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  [
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+  ],
+  [
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+  ],
+  [
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+  ],
+}
+
+`;
+
+exports[`array-key.yml 2`] = `
+{? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+    [
+        longlonglonglonglonglonglonglonglonglonglong,
+        longlonglonglonglonglonglonglonglonglonglong,
+        longlonglonglonglonglonglonglonglonglonglong,
+    ],
+    [
+        longlonglonglonglonglonglonglonglonglonglong,
+        longlonglonglonglonglonglonglonglonglonglong,
+        longlonglonglonglonglonglonglonglonglonglong,
+    ],
+    [
+        longlonglonglonglonglonglonglonglonglonglong,
+        longlonglonglonglonglonglonglonglonglonglong,
+        longlonglonglonglonglonglonglonglonglonglong,
+    ],
+}
+
+`;
+
+exports[`array-key.yml 3`] = `
+{? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  [
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+  ],
+  [
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+  ],
+  [
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+  ],
+}
+
+`;
+
+exports[`array-key-array-value.yml 1`] = `
+{[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  ? [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ]
+  : [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+  ? [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ]
+  : [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+  ? [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ]
+  : [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+}
+
+`;
+
+exports[`array-key-array-value.yml 2`] = `
+{[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+    ? [
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+      ]
+    : [
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+      ],
+    ? [
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+      ]
+    : [
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+      ],
+    ? [
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+      ]
+    : [
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+      ],
+}
+
+`;
+
+exports[`array-key-array-value.yml 3`] = `
+{[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  ? [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ]
+  : [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+  ? [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ]
+  : [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+  ? [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ]
+  : [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+}
+
+`;
+
+exports[`array-plain.yml 1`] = `
+{[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  [
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+  ],
+  [
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+  ],
+  [
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+  ],
+}
+
+`;
+
+exports[`array-plain.yml 2`] = `
+{[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+    [
+        longlonglonglonglonglonglonglonglonglonglong,
+        longlonglonglonglonglonglonglonglonglonglong,
+        longlonglonglonglonglonglonglonglonglonglong,
+    ],
+    [
+        longlonglonglonglonglonglonglonglonglonglong,
+        longlonglonglonglonglonglonglonglonglonglong,
+        longlonglonglonglonglonglonglonglonglonglong,
+    ],
+    [
+        longlonglonglonglonglonglonglonglonglonglong,
+        longlonglonglonglonglonglonglonglonglonglong,
+        longlonglonglonglonglonglonglonglonglonglong,
+    ],
+}
+
+`;
+
+exports[`array-plain.yml 3`] = `
+{[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  [
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+  ],
+  [
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+  ],
+  [
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+  ],
+}
+
+`;
+
+exports[`array-value.yml 1`] = `
+{a: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],b: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],c: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  a:
+    [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+  b:
+    [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+  c:
+    [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+}
+
+`;
+
+exports[`array-value.yml 2`] = `
+{a: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],b: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],c: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+    a:
+        [
+            longlonglonglonglonglonglonglonglonglonglong,
+            longlonglonglonglonglonglonglonglonglonglong,
+            longlonglonglonglonglonglonglonglonglonglong,
+        ],
+    b:
+        [
+            longlonglonglonglonglonglonglonglonglonglong,
+            longlonglonglonglonglonglonglonglonglonglong,
+            longlonglonglonglonglonglonglonglonglonglong,
+        ],
+    c:
+        [
+            longlonglonglonglonglonglonglonglonglonglong,
+            longlonglonglonglonglonglonglonglonglonglong,
+            longlonglonglonglonglonglonglonglonglonglong,
+        ],
+}
+
+`;
+
+exports[`array-value.yml 3`] = `
+{a: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],b: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],c: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  a:
+    [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+  b:
+    [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+  c:
+    [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+}
+
+`;
+
+exports[`comment-between.yml 1`] = `
+{
+? 123
+# comment
+: 456
+}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  ? 123
+  # comment
+  : 456,
+}
+
+`;
+
+exports[`comment-between.yml 2`] = `
+{
+? 123
+# comment
+: 456
+}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+    ? 123
+    # comment
+    : 456,
+}
+
+`;
+
+exports[`comment-between.yml 3`] = `
+{
+? 123
+# comment
+: 456
+}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  ? 123
+  # comment
+  : 456,
+}
+
+`;
+
+exports[`comment-trailing.yml 1`] = `
+{123, # comment
+}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  123, # comment
+}
+
+`;
+
+exports[`comment-trailing.yml 2`] = `
+{123, # comment
+}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+    123, # comment
+}
+
+`;
+
+exports[`comment-trailing.yml 3`] = `
+{123, # comment
+}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  123, # comment
+}
+
+`;
+
+exports[`empty.yml 1`] = `
+{}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{}
+
+`;
+
+exports[`empty.yml 2`] = `
+{}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{}
+
+`;
+
+exports[`empty.yml 3`] = `
+{}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{}
+
+`;
+
+exports[`empty-item-colon.yml 1`] = `
+{ : }
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ : }
+
+`;
+
+exports[`empty-item-colon.yml 2`] = `
+{ : }
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ : }
+
+`;
+
+exports[`empty-item-colon.yml 3`] = `
+{ : }
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{: }
+
+`;
+
+exports[`empty-line.yml 1`] = `
+{ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa, 
+
+bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb }
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
+
+  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,
+}
+
+`;
+
+exports[`empty-line.yml 2`] = `
+{ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa, 
+
+bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb }
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
+
+    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,
+}
+
+`;
+
+exports[`empty-line.yml 3`] = `
+{ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa, 
+
+bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb }
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
+
+  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,
+}
+
+`;
+
+exports[`empty-line-collapse.yml 1`] = `
+{ aaa, 
+
+bbb }
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ aaa, bbb }
+
+`;
+
+exports[`empty-line-collapse.yml 2`] = `
+{ aaa, 
+
+bbb }
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ aaa, bbb }
+
+`;
+
+exports[`empty-line-collapse.yml 3`] = `
+{ aaa, 
+
+bbb }
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{aaa, bbb}
+
+`;
+
+exports[`long-key.yml 1`] = `
+{? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong1,? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong2,? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong3}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong1,
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong2,
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong3,
+}
+
+`;
+
+exports[`long-key.yml 2`] = `
+{? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong1,? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong2,? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong3}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong1,
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong2,
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong3,
+}
+
+`;
+
+exports[`long-key.yml 3`] = `
+{? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong1,? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong2,? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong3}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong1,
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong2,
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong3,
+}
+
+`;
+
+exports[`long-key-long-value.yml 1`] = `
+{longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong1: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong2: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong3: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong1:
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong2:
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong3:
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+}
+
+`;
+
+exports[`long-key-long-value.yml 2`] = `
+{longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong1: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong2: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong3: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong1:
+        longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong2:
+        longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong3:
+        longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+}
+
+`;
+
+exports[`long-key-long-value.yml 3`] = `
+{longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong1: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong2: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong3: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong1:
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong2:
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong3:
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+}
+
+`;
+
+exports[`long-plain.yml 1`] = `
+{longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong1,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong2,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong3}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong1,
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong2,
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong3,
+}
+
+`;
+
+exports[`long-plain.yml 2`] = `
+{longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong1,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong2,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong3}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong1,
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong2,
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong3,
+}
+
+`;
+
+exports[`long-plain.yml 3`] = `
+{longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong1,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong2,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong3}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong1,
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong2,
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong3,
+}
+
+`;
+
+exports[`long-value.yml 1`] = `
+{1: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,2: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,3: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  1: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  2: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  3: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+}
+
+`;
+
+exports[`long-value.yml 2`] = `
+{1: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,2: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,3: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+    1: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+    2: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+    3: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+}
+
+`;
+
+exports[`long-value.yml 3`] = `
+{1: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,2: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,3: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  1: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  2: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  3: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+}
+
+`;
+
+exports[`middle-comment.yml 1`] = `
+!!map #comment
+{}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!map #comment
+{}
+
+`;
+
+exports[`middle-comment.yml 2`] = `
+!!map #comment
+{}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!map #comment
+{}
+
+`;
+
+exports[`middle-comment.yml 3`] = `
+!!map #comment
+{}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!map #comment
+{}
+
+`;
+
+exports[`middle-comments.yml 1`] = `
+!!map # comment 1
+# comment 2
+{}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!map
+# comment 1
+# comment 2
+{}
+
+`;
+
+exports[`middle-comments.yml 2`] = `
+!!map # comment 1
+# comment 2
+{}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!map
+# comment 1
+# comment 2
+{}
+
+`;
+
+exports[`middle-comments.yml 3`] = `
+!!map # comment 1
+# comment 2
+{}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!map
+# comment 1
+# comment 2
+{}
+
+`;
+
+exports[`next-empty-line.yml 1`] = `
+{
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa: 123, bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb: 123, 
+
+c: 123
+}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa: 123,
+  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb: 123,
+
+  c: 123,
+}
+
+`;
+
+exports[`next-empty-line.yml 2`] = `
+{
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa: 123, bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb: 123, 
+
+c: 123
+}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa: 123,
+    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb: 123,
+
+    c: 123,
+}
+
+`;
+
+exports[`next-empty-line.yml 3`] = `
+{
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa: 123, bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb: 123, 
+
+c: 123
+}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa: 123,
+  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb: 123,
+
+  c: 123,
+}
+
+`;
+
+exports[`props.yml 1`] = `
+!!map &anchor {a: 1}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!map &anchor { a: 1 }
+
+`;
+
+exports[`props.yml 2`] = `
+!!map &anchor {a: 1}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!map &anchor { a: 1 }
+
+`;
+
+exports[`props.yml 3`] = `
+!!map &anchor {a: 1}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!map &anchor {a: 1}
+
+`;
+
+exports[`props-in-map.yml 1`] = `
+a: !!map &anchor {a: 1}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: !!map &anchor { a: 1 }
+
+`;
+
+exports[`props-in-map.yml 2`] = `
+a: !!map &anchor {a: 1}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: !!map &anchor { a: 1 }
+
+`;
+
+exports[`props-in-map.yml 3`] = `
+a: !!map &anchor {a: 1}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: !!map &anchor {a: 1}
+
+`;
+
+exports[`short-key.yml 1`] = `
+{? 1,? 2,? 3}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ 1, 2, 3 }
+
+`;
+
+exports[`short-key.yml 2`] = `
+{? 1,? 2,? 3}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ 1, 2, 3 }
+
+`;
+
+exports[`short-key.yml 3`] = `
+{? 1,? 2,? 3}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{1, 2, 3}
+
+`;
+
+exports[`short-key-short-value.yml 1`] = `
+{1: a,2: b,3: c}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ 1: a, 2: b, 3: c }
+
+`;
+
+exports[`short-key-short-value.yml 2`] = `
+{1: a,2: b,3: c}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ 1: a, 2: b, 3: c }
+
+`;
+
+exports[`short-key-short-value.yml 3`] = `
+{1: a,2: b,3: c}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{1: a, 2: b, 3: c}
+
+`;
+
+exports[`short-plain.yml 1`] = `
+{1,2,3}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ 1, 2, 3 }
+
+`;
+
+exports[`short-plain.yml 2`] = `
+{1,2,3}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ 1, 2, 3 }
+
+`;
+
+exports[`short-plain.yml 3`] = `
+{1,2,3}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{1, 2, 3}
+
+`;
+
+exports[`short-value.yml 1`] = `
+{1: 1,2: 2,3: 3}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ 1: 1, 2: 2, 3: 3 }
+
+`;
+
+exports[`short-value.yml 2`] = `
+{1: 1,2: 2,3: 3}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ 1: 1, 2: 2, 3: 3 }
+
+`;
+
+exports[`short-value.yml 3`] = `
+{1: 1,2: 2,3: 3}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{1: 1, 2: 2, 3: 3}
+
+`;
diff --git a/tests/yaml_flow_mapping/alias-key.yml b/tests/yaml_flow_mapping/alias-key.yml
new file mode 100644
index 000000000..ab4a8d770
--- /dev/null
+++ b/tests/yaml_flow_mapping/alias-key.yml
@@ -0,0 +1 @@
+{*123 : 456}
diff --git a/tests/yaml_flow_mapping/array-key-array-value.yml b/tests/yaml_flow_mapping/array-key-array-value.yml
new file mode 100644
index 000000000..22d0b7b81
--- /dev/null
+++ b/tests/yaml_flow_mapping/array-key-array-value.yml
@@ -0,0 +1 @@
+{[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]}
diff --git a/tests/yaml_flow_mapping/array-key.yml b/tests/yaml_flow_mapping/array-key.yml
new file mode 100644
index 000000000..7bb482cdf
--- /dev/null
+++ b/tests/yaml_flow_mapping/array-key.yml
@@ -0,0 +1 @@
+{? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]}
diff --git a/tests/yaml_flow_mapping/array-plain.yml b/tests/yaml_flow_mapping/array-plain.yml
new file mode 100644
index 000000000..6907bf1ea
--- /dev/null
+++ b/tests/yaml_flow_mapping/array-plain.yml
@@ -0,0 +1 @@
+{[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]}
diff --git a/tests/yaml_flow_mapping/array-value.yml b/tests/yaml_flow_mapping/array-value.yml
new file mode 100644
index 000000000..bce7cf5d5
--- /dev/null
+++ b/tests/yaml_flow_mapping/array-value.yml
@@ -0,0 +1 @@
+{a: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],b: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],c: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]}
diff --git a/tests/yaml_flow_mapping/comment-between.yml b/tests/yaml_flow_mapping/comment-between.yml
new file mode 100644
index 000000000..8cec095d2
--- /dev/null
+++ b/tests/yaml_flow_mapping/comment-between.yml
@@ -0,0 +1,5 @@
+{
+? 123
+# comment
+: 456
+}
diff --git a/tests/yaml_flow_mapping/comment-trailing.yml b/tests/yaml_flow_mapping/comment-trailing.yml
new file mode 100644
index 000000000..56878725d
--- /dev/null
+++ b/tests/yaml_flow_mapping/comment-trailing.yml
@@ -0,0 +1,2 @@
+{123, # comment
+}
diff --git a/tests/yaml_flow_mapping/empty-item-colon.yml b/tests/yaml_flow_mapping/empty-item-colon.yml
new file mode 100644
index 000000000..d9443b760
--- /dev/null
+++ b/tests/yaml_flow_mapping/empty-item-colon.yml
@@ -0,0 +1 @@
+{ : }
diff --git a/tests/yaml_flow_mapping/empty-line-collapse.yml b/tests/yaml_flow_mapping/empty-line-collapse.yml
new file mode 100644
index 000000000..9398cbdc9
--- /dev/null
+++ b/tests/yaml_flow_mapping/empty-line-collapse.yml
@@ -0,0 +1,3 @@
+{ aaa, 
+
+bbb }
diff --git a/tests/yaml_flow_mapping/empty-line.yml b/tests/yaml_flow_mapping/empty-line.yml
new file mode 100644
index 000000000..2789d358a
--- /dev/null
+++ b/tests/yaml_flow_mapping/empty-line.yml
@@ -0,0 +1,3 @@
+{ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa, 
+
+bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb }
diff --git a/tests/yaml_flow_mapping/empty.yml b/tests/yaml_flow_mapping/empty.yml
new file mode 100644
index 000000000..0967ef424
--- /dev/null
+++ b/tests/yaml_flow_mapping/empty.yml
@@ -0,0 +1 @@
+{}
diff --git a/tests/yaml_flow_mapping/jsfmt.spec.js b/tests/yaml_flow_mapping/jsfmt.spec.js
new file mode 100644
index 000000000..755b6ecb2
--- /dev/null
+++ b/tests/yaml_flow_mapping/jsfmt.spec.js
@@ -0,0 +1,3 @@
+run_spec(__dirname, ["yaml"]);
+run_spec(__dirname, ["yaml"], { tabWidth: 4 });
+run_spec(__dirname, ["yaml"], { bracketSpacing: false });
diff --git a/tests/yaml_flow_mapping/long-key-long-value.yml b/tests/yaml_flow_mapping/long-key-long-value.yml
new file mode 100644
index 000000000..f5921c46e
--- /dev/null
+++ b/tests/yaml_flow_mapping/long-key-long-value.yml
@@ -0,0 +1 @@
+{longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong1: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong2: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong3: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong}
diff --git a/tests/yaml_flow_mapping/long-key.yml b/tests/yaml_flow_mapping/long-key.yml
new file mode 100644
index 000000000..19135a815
--- /dev/null
+++ b/tests/yaml_flow_mapping/long-key.yml
@@ -0,0 +1 @@
+{? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong1,? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong2,? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong3}
diff --git a/tests/yaml_flow_mapping/long-plain.yml b/tests/yaml_flow_mapping/long-plain.yml
new file mode 100644
index 000000000..7440de92d
--- /dev/null
+++ b/tests/yaml_flow_mapping/long-plain.yml
@@ -0,0 +1 @@
+{longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong1,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong2,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong3}
diff --git a/tests/yaml_flow_mapping/long-value.yml b/tests/yaml_flow_mapping/long-value.yml
new file mode 100644
index 000000000..eeea6f2d7
--- /dev/null
+++ b/tests/yaml_flow_mapping/long-value.yml
@@ -0,0 +1 @@
+{1: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,2: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,3: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong}
diff --git a/tests/yaml_flow_mapping/middle-comment.yml b/tests/yaml_flow_mapping/middle-comment.yml
new file mode 100644
index 000000000..2074e9048
--- /dev/null
+++ b/tests/yaml_flow_mapping/middle-comment.yml
@@ -0,0 +1,2 @@
+!!map #comment
+{}
diff --git a/tests/yaml_flow_mapping/middle-comments.yml b/tests/yaml_flow_mapping/middle-comments.yml
new file mode 100644
index 000000000..039a8b561
--- /dev/null
+++ b/tests/yaml_flow_mapping/middle-comments.yml
@@ -0,0 +1,3 @@
+!!map # comment 1
+# comment 2
+{}
diff --git a/tests/yaml_flow_mapping/next-empty-line.yml b/tests/yaml_flow_mapping/next-empty-line.yml
new file mode 100644
index 000000000..8c2062e19
--- /dev/null
+++ b/tests/yaml_flow_mapping/next-empty-line.yml
@@ -0,0 +1,5 @@
+{
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa: 123, bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb: 123, 
+
+c: 123
+}
diff --git a/tests/yaml_flow_mapping/props-in-map.yml b/tests/yaml_flow_mapping/props-in-map.yml
new file mode 100644
index 000000000..c3f92c48d
--- /dev/null
+++ b/tests/yaml_flow_mapping/props-in-map.yml
@@ -0,0 +1 @@
+a: !!map &anchor {a: 1}
diff --git a/tests/yaml_flow_mapping/props.yml b/tests/yaml_flow_mapping/props.yml
new file mode 100644
index 000000000..941a67430
--- /dev/null
+++ b/tests/yaml_flow_mapping/props.yml
@@ -0,0 +1 @@
+!!map &anchor {a: 1}
diff --git a/tests/yaml_flow_mapping/short-key-short-value.yml b/tests/yaml_flow_mapping/short-key-short-value.yml
new file mode 100644
index 000000000..97d7cd8d4
--- /dev/null
+++ b/tests/yaml_flow_mapping/short-key-short-value.yml
@@ -0,0 +1 @@
+{1: a,2: b,3: c}
diff --git a/tests/yaml_flow_mapping/short-key.yml b/tests/yaml_flow_mapping/short-key.yml
new file mode 100644
index 000000000..0b8c097c4
--- /dev/null
+++ b/tests/yaml_flow_mapping/short-key.yml
@@ -0,0 +1 @@
+{? 1,? 2,? 3}
diff --git a/tests/yaml_flow_mapping/short-plain.yml b/tests/yaml_flow_mapping/short-plain.yml
new file mode 100644
index 000000000..aeb3842cb
--- /dev/null
+++ b/tests/yaml_flow_mapping/short-plain.yml
@@ -0,0 +1 @@
+{1,2,3}
diff --git a/tests/yaml_flow_mapping/short-value.yml b/tests/yaml_flow_mapping/short-value.yml
new file mode 100644
index 000000000..cab19226b
--- /dev/null
+++ b/tests/yaml_flow_mapping/short-value.yml
@@ -0,0 +1 @@
+{1: 1,2: 2,3: 3}
diff --git a/tests/yaml_flow_sequence/__snapshots__/jsfmt.spec.js.snap b/tests/yaml_flow_sequence/__snapshots__/jsfmt.spec.js.snap
new file mode 100644
index 000000000..fee4bef58
--- /dev/null
+++ b/tests/yaml_flow_sequence/__snapshots__/jsfmt.spec.js.snap
@@ -0,0 +1,904 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`alias-key.yml 1`] = `
+[*123 : 456]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[*123 : 456]
+
+`;
+
+exports[`alias-key.yml 2`] = `
+[*123 : 456]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[*123 : 456]
+
+`;
+
+exports[`alias-key.yml 3`] = `
+[*123 : 456]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[*123 : 456]
+
+`;
+
+exports[`array-key.yml 1`] = `
+[? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  ? [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+  ? [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+  ? [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+]
+
+`;
+
+exports[`array-key.yml 2`] = `
+[? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+    ? [
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+      ],
+    ? [
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+      ],
+    ? [
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+      ],
+]
+
+`;
+
+exports[`array-key.yml 3`] = `
+[? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  ? [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+  ? [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+  ? [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+]
+
+`;
+
+exports[`array-key-array-value.yml 1`] = `
+[[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  ? [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ]
+  : [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+  ? [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ]
+  : [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+  ? [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ]
+  : [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+]
+
+`;
+
+exports[`array-key-array-value.yml 2`] = `
+[[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+    ? [
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+      ]
+    : [
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+      ],
+    ? [
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+      ]
+    : [
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+      ],
+    ? [
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+      ]
+    : [
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+      ],
+]
+
+`;
+
+exports[`array-key-array-value.yml 3`] = `
+[[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  ? [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ]
+  : [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+  ? [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ]
+  : [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+  ? [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ]
+  : [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+]
+
+`;
+
+exports[`array-plain.yml 1`] = `
+[[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  [
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+  ],
+  [
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+  ],
+  [
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+  ],
+]
+
+`;
+
+exports[`array-plain.yml 2`] = `
+[[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+    [
+        longlonglonglonglonglonglonglonglonglonglong,
+        longlonglonglonglonglonglonglonglonglonglong,
+        longlonglonglonglonglonglonglonglonglonglong,
+    ],
+    [
+        longlonglonglonglonglonglonglonglonglonglong,
+        longlonglonglonglonglonglonglonglonglonglong,
+        longlonglonglonglonglonglonglonglonglonglong,
+    ],
+    [
+        longlonglonglonglonglonglonglonglonglonglong,
+        longlonglonglonglonglonglonglonglonglonglong,
+        longlonglonglonglonglonglonglonglonglonglong,
+    ],
+]
+
+`;
+
+exports[`array-plain.yml 3`] = `
+[[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  [
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+  ],
+  [
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+  ],
+  [
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglong,
+  ],
+]
+
+`;
+
+exports[`array-value.yml 1`] = `
+[: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  : [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+  : [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+  : [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+]
+
+`;
+
+exports[`array-value.yml 2`] = `
+[: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+    : [
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+      ],
+    : [
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+      ],
+    : [
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+          longlonglonglonglonglonglonglonglonglonglong,
+      ],
+]
+
+`;
+
+exports[`array-value.yml 3`] = `
+[: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  : [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+  : [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+  : [
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+      longlonglonglonglonglonglonglonglonglonglong,
+    ],
+]
+
+`;
+
+exports[`comment-between.yml 1`] = `
+[
+? 123
+# comment
+: 456
+]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  ? 123
+  # comment
+  : 456,
+]
+
+`;
+
+exports[`comment-between.yml 2`] = `
+[
+? 123
+# comment
+: 456
+]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+    ? 123
+    # comment
+    : 456,
+]
+
+`;
+
+exports[`comment-between.yml 3`] = `
+[
+? 123
+# comment
+: 456
+]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  ? 123
+  # comment
+  : 456,
+]
+
+`;
+
+exports[`comment-trailing.yml 1`] = `
+[123, # comment
+]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  123, # comment
+]
+
+`;
+
+exports[`comment-trailing.yml 2`] = `
+[123, # comment
+]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+    123, # comment
+]
+
+`;
+
+exports[`comment-trailing.yml 3`] = `
+[123, # comment
+]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  123, # comment
+]
+
+`;
+
+exports[`empty.yml 1`] = `
+[]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[]
+
+`;
+
+exports[`empty.yml 2`] = `
+[]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[]
+
+`;
+
+exports[`empty.yml 3`] = `
+[]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[]
+
+`;
+
+exports[`empty-item-colon.yml 1`] = `
+[ : ]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[: ]
+
+`;
+
+exports[`empty-item-colon.yml 2`] = `
+[ : ]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[: ]
+
+`;
+
+exports[`empty-item-colon.yml 3`] = `
+[ : ]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[: ]
+
+`;
+
+exports[`empty-line.yml 1`] = `
+[ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa, 
+
+bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb ]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
+
+  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,
+]
+
+`;
+
+exports[`empty-line.yml 2`] = `
+[ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa, 
+
+bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb ]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
+
+    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,
+]
+
+`;
+
+exports[`empty-line.yml 3`] = `
+[ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa, 
+
+bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb ]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
+
+  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,
+]
+
+`;
+
+exports[`empty-line-collapse.yml 1`] = `
+[ aaa, 
+
+bbb ]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[aaa, bbb]
+
+`;
+
+exports[`empty-line-collapse.yml 2`] = `
+[ aaa, 
+
+bbb ]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[aaa, bbb]
+
+`;
+
+exports[`empty-line-collapse.yml 3`] = `
+[ aaa, 
+
+bbb ]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[aaa, bbb]
+
+`;
+
+exports[`long-key.yml 1`] = `
+[? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  ? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  ? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  ? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+]
+
+`;
+
+exports[`long-key.yml 2`] = `
+[? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+    ? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+    ? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+    ? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+]
+
+`;
+
+exports[`long-key.yml 3`] = `
+[? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  ? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  ? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  ? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+]
+
+`;
+
+exports[`long-key-long-value.yml 1`] = `
+[longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong:
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong:
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong:
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+]
+
+`;
+
+exports[`long-key-long-value.yml 2`] = `
+[longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong:
+        longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong:
+        longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong:
+        longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+]
+
+`;
+
+exports[`long-key-long-value.yml 3`] = `
+[longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong:
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong:
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong:
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+]
+
+`;
+
+exports[`long-plain.yml 1`] = `
+[longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+]
+
+`;
+
+exports[`long-plain.yml 2`] = `
+[longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+]
+
+`;
+
+exports[`long-plain.yml 3`] = `
+[longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+]
+
+`;
+
+exports[`long-value.yml 1`] = `
+[: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  : longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  : longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  : longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+]
+
+`;
+
+exports[`long-value.yml 2`] = `
+[: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+    : longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+    : longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+    : longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+]
+
+`;
+
+exports[`long-value.yml 3`] = `
+[: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  : longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  : longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+  : longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,
+]
+
+`;
+
+exports[`middle-comment.yml 1`] = `
+!!set # comment
+[]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!set # comment
+[]
+
+`;
+
+exports[`middle-comment.yml 2`] = `
+!!set # comment
+[]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!set # comment
+[]
+
+`;
+
+exports[`middle-comment.yml 3`] = `
+!!set # comment
+[]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!set # comment
+[]
+
+`;
+
+exports[`middle-comments.yml 1`] = `
+!!set # comment 1
+# comment 2
+[]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!set
+# comment 1
+# comment 2
+[]
+
+`;
+
+exports[`middle-comments.yml 2`] = `
+!!set # comment 1
+# comment 2
+[]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!set
+# comment 1
+# comment 2
+[]
+
+`;
+
+exports[`middle-comments.yml 3`] = `
+!!set # comment 1
+# comment 2
+[]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!set
+# comment 1
+# comment 2
+[]
+
+`;
+
+exports[`next-empty-line.yml 1`] = `
+[
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa: 123, bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb: 123, 
+
+c: 123
+]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa: 123,
+  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb: 123,
+
+  c: 123,
+]
+
+`;
+
+exports[`next-empty-line.yml 2`] = `
+[
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa: 123, bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb: 123, 
+
+c: 123
+]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa: 123,
+    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb: 123,
+
+    c: 123,
+]
+
+`;
+
+exports[`next-empty-line.yml 3`] = `
+[
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa: 123, bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb: 123, 
+
+c: 123
+]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa: 123,
+  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb: 123,
+
+  c: 123,
+]
+
+`;
+
+exports[`props.yml 1`] = `
+!!set &anchor [1]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!set &anchor [1]
+
+`;
+
+exports[`props.yml 2`] = `
+!!set &anchor [1]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!set &anchor [1]
+
+`;
+
+exports[`props.yml 3`] = `
+!!set &anchor [1]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!set &anchor [1]
+
+`;
+
+exports[`props-in-map.yml 1`] = `
+a: !!set &anchor [1]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: !!set &anchor [1]
+
+`;
+
+exports[`props-in-map.yml 2`] = `
+a: !!set &anchor [1]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: !!set &anchor [1]
+
+`;
+
+exports[`props-in-map.yml 3`] = `
+a: !!set &anchor [1]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: !!set &anchor [1]
+
+`;
+
+exports[`short-key.yml 1`] = `
+[? 1,? 2,? 3]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[? 1, ? 2, ? 3]
+
+`;
+
+exports[`short-key.yml 2`] = `
+[? 1,? 2,? 3]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[? 1, ? 2, ? 3]
+
+`;
+
+exports[`short-key.yml 3`] = `
+[? 1,? 2,? 3]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[? 1, ? 2, ? 3]
+
+`;
+
+exports[`short-key-short-value.yml 1`] = `
+[1: a,2: b,3: c]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[1: a, 2: b, 3: c]
+
+`;
+
+exports[`short-key-short-value.yml 2`] = `
+[1: a,2: b,3: c]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[1: a, 2: b, 3: c]
+
+`;
+
+exports[`short-key-short-value.yml 3`] = `
+[1: a,2: b,3: c]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[1: a, 2: b, 3: c]
+
+`;
+
+exports[`short-plain.yml 1`] = `
+[1,2,3]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[1, 2, 3]
+
+`;
+
+exports[`short-plain.yml 2`] = `
+[1,2,3]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[1, 2, 3]
+
+`;
+
+exports[`short-plain.yml 3`] = `
+[1,2,3]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[1, 2, 3]
+
+`;
+
+exports[`short-value.yml 1`] = `
+[: 1,: 2,: 3]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[: 1, : 2, : 3]
+
+`;
+
+exports[`short-value.yml 2`] = `
+[: 1,: 2,: 3]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[: 1, : 2, : 3]
+
+`;
+
+exports[`short-value.yml 3`] = `
+[: 1,: 2,: 3]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[: 1, : 2, : 3]
+
+`;
diff --git a/tests/yaml_flow_sequence/alias-key.yml b/tests/yaml_flow_sequence/alias-key.yml
new file mode 100644
index 000000000..9241a61bf
--- /dev/null
+++ b/tests/yaml_flow_sequence/alias-key.yml
@@ -0,0 +1 @@
+[*123 : 456]
diff --git a/tests/yaml_flow_sequence/array-key-array-value.yml b/tests/yaml_flow_sequence/array-key-array-value.yml
new file mode 100644
index 000000000..975846f26
--- /dev/null
+++ b/tests/yaml_flow_sequence/array-key-array-value.yml
@@ -0,0 +1 @@
+[[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]]
diff --git a/tests/yaml_flow_sequence/array-key.yml b/tests/yaml_flow_sequence/array-key.yml
new file mode 100644
index 000000000..acdd04899
--- /dev/null
+++ b/tests/yaml_flow_sequence/array-key.yml
@@ -0,0 +1 @@
+[? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],? [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]]
diff --git a/tests/yaml_flow_sequence/array-plain.yml b/tests/yaml_flow_sequence/array-plain.yml
new file mode 100644
index 000000000..9e83cd6be
--- /dev/null
+++ b/tests/yaml_flow_sequence/array-plain.yml
@@ -0,0 +1 @@
+[[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],[longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]]
diff --git a/tests/yaml_flow_sequence/array-value.yml b/tests/yaml_flow_sequence/array-value.yml
new file mode 100644
index 000000000..dd4a34a5c
--- /dev/null
+++ b/tests/yaml_flow_sequence/array-value.yml
@@ -0,0 +1 @@
+[: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong],: [longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong, longlonglonglonglonglonglonglonglonglonglong]]
diff --git a/tests/yaml_flow_sequence/comment-between.yml b/tests/yaml_flow_sequence/comment-between.yml
new file mode 100644
index 000000000..a82146edc
--- /dev/null
+++ b/tests/yaml_flow_sequence/comment-between.yml
@@ -0,0 +1,5 @@
+[
+? 123
+# comment
+: 456
+]
diff --git a/tests/yaml_flow_sequence/comment-trailing.yml b/tests/yaml_flow_sequence/comment-trailing.yml
new file mode 100644
index 000000000..37cb4e3ea
--- /dev/null
+++ b/tests/yaml_flow_sequence/comment-trailing.yml
@@ -0,0 +1,2 @@
+[123, # comment
+]
diff --git a/tests/yaml_flow_sequence/empty-item-colon.yml b/tests/yaml_flow_sequence/empty-item-colon.yml
new file mode 100644
index 000000000..b0d191d9f
--- /dev/null
+++ b/tests/yaml_flow_sequence/empty-item-colon.yml
@@ -0,0 +1 @@
+[ : ]
diff --git a/tests/yaml_flow_sequence/empty-line-collapse.yml b/tests/yaml_flow_sequence/empty-line-collapse.yml
new file mode 100644
index 000000000..82d4640de
--- /dev/null
+++ b/tests/yaml_flow_sequence/empty-line-collapse.yml
@@ -0,0 +1,3 @@
+[ aaa, 
+
+bbb ]
diff --git a/tests/yaml_flow_sequence/empty-line.yml b/tests/yaml_flow_sequence/empty-line.yml
new file mode 100644
index 000000000..197b572a8
--- /dev/null
+++ b/tests/yaml_flow_sequence/empty-line.yml
@@ -0,0 +1,3 @@
+[ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa, 
+
+bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb ]
diff --git a/tests/yaml_flow_sequence/empty.yml b/tests/yaml_flow_sequence/empty.yml
new file mode 100644
index 000000000..fe51488c7
--- /dev/null
+++ b/tests/yaml_flow_sequence/empty.yml
@@ -0,0 +1 @@
+[]
diff --git a/tests/yaml_flow_sequence/jsfmt.spec.js b/tests/yaml_flow_sequence/jsfmt.spec.js
new file mode 100644
index 000000000..755b6ecb2
--- /dev/null
+++ b/tests/yaml_flow_sequence/jsfmt.spec.js
@@ -0,0 +1,3 @@
+run_spec(__dirname, ["yaml"]);
+run_spec(__dirname, ["yaml"], { tabWidth: 4 });
+run_spec(__dirname, ["yaml"], { bracketSpacing: false });
diff --git a/tests/yaml_flow_sequence/long-key-long-value.yml b/tests/yaml_flow_sequence/long-key-long-value.yml
new file mode 100644
index 000000000..f0dd645df
--- /dev/null
+++ b/tests/yaml_flow_sequence/long-key-long-value.yml
@@ -0,0 +1 @@
+[longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong]
diff --git a/tests/yaml_flow_sequence/long-key.yml b/tests/yaml_flow_sequence/long-key.yml
new file mode 100644
index 000000000..38f6cb9c8
--- /dev/null
+++ b/tests/yaml_flow_sequence/long-key.yml
@@ -0,0 +1 @@
+[? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong]
diff --git a/tests/yaml_flow_sequence/long-plain.yml b/tests/yaml_flow_sequence/long-plain.yml
new file mode 100644
index 000000000..cfc490322
--- /dev/null
+++ b/tests/yaml_flow_sequence/long-plain.yml
@@ -0,0 +1 @@
+[longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong]
diff --git a/tests/yaml_flow_sequence/long-value.yml b/tests/yaml_flow_sequence/long-value.yml
new file mode 100644
index 000000000..0182a7629
--- /dev/null
+++ b/tests/yaml_flow_sequence/long-value.yml
@@ -0,0 +1 @@
+[: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong,: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglong]
diff --git a/tests/yaml_flow_sequence/middle-comment.yml b/tests/yaml_flow_sequence/middle-comment.yml
new file mode 100644
index 000000000..750026a36
--- /dev/null
+++ b/tests/yaml_flow_sequence/middle-comment.yml
@@ -0,0 +1,2 @@
+!!set # comment
+[]
diff --git a/tests/yaml_flow_sequence/middle-comments.yml b/tests/yaml_flow_sequence/middle-comments.yml
new file mode 100644
index 000000000..49fd042fe
--- /dev/null
+++ b/tests/yaml_flow_sequence/middle-comments.yml
@@ -0,0 +1,3 @@
+!!set # comment 1
+# comment 2
+[]
diff --git a/tests/yaml_flow_sequence/next-empty-line.yml b/tests/yaml_flow_sequence/next-empty-line.yml
new file mode 100644
index 000000000..7b9b99574
--- /dev/null
+++ b/tests/yaml_flow_sequence/next-empty-line.yml
@@ -0,0 +1,5 @@
+[
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa: 123, bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb: 123, 
+
+c: 123
+]
diff --git a/tests/yaml_flow_sequence/props-in-map.yml b/tests/yaml_flow_sequence/props-in-map.yml
new file mode 100644
index 000000000..d9a26a25f
--- /dev/null
+++ b/tests/yaml_flow_sequence/props-in-map.yml
@@ -0,0 +1 @@
+a: !!set &anchor [1]
diff --git a/tests/yaml_flow_sequence/props.yml b/tests/yaml_flow_sequence/props.yml
new file mode 100644
index 000000000..a00c99682
--- /dev/null
+++ b/tests/yaml_flow_sequence/props.yml
@@ -0,0 +1 @@
+!!set &anchor [1]
diff --git a/tests/yaml_flow_sequence/short-key-short-value.yml b/tests/yaml_flow_sequence/short-key-short-value.yml
new file mode 100644
index 000000000..070fcfdf9
--- /dev/null
+++ b/tests/yaml_flow_sequence/short-key-short-value.yml
@@ -0,0 +1 @@
+[1: a,2: b,3: c]
diff --git a/tests/yaml_flow_sequence/short-key.yml b/tests/yaml_flow_sequence/short-key.yml
new file mode 100644
index 000000000..9f48acb76
--- /dev/null
+++ b/tests/yaml_flow_sequence/short-key.yml
@@ -0,0 +1 @@
+[? 1,? 2,? 3]
diff --git a/tests/yaml_flow_sequence/short-plain.yml b/tests/yaml_flow_sequence/short-plain.yml
new file mode 100644
index 000000000..3cc0ecbed
--- /dev/null
+++ b/tests/yaml_flow_sequence/short-plain.yml
@@ -0,0 +1 @@
+[1,2,3]
diff --git a/tests/yaml_flow_sequence/short-value.yml b/tests/yaml_flow_sequence/short-value.yml
new file mode 100644
index 000000000..2c6573a9e
--- /dev/null
+++ b/tests/yaml_flow_sequence/short-value.yml
@@ -0,0 +1 @@
+[: 1,: 2,: 3]
diff --git a/tests/yaml_insert_pragma/__snapshots__/jsfmt.spec.js.snap b/tests/yaml_insert_pragma/__snapshots__/jsfmt.spec.js.snap
new file mode 100644
index 000000000..cd7cc9d48
--- /dev/null
+++ b/tests/yaml_insert_pragma/__snapshots__/jsfmt.spec.js.snap
@@ -0,0 +1,23 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`with-pragma.yml 1`] = `
+# @prettier
+
+    123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+# @prettier
+
+123
+
+`;
+
+exports[`without-pragma.yml 1`] = `
+
+
+    123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+# @format
+
+123
+
+`;
diff --git a/tests/yaml_insert_pragma/jsfmt.spec.js b/tests/yaml_insert_pragma/jsfmt.spec.js
new file mode 100644
index 000000000..06adadff2
--- /dev/null
+++ b/tests/yaml_insert_pragma/jsfmt.spec.js
@@ -0,0 +1 @@
+run_spec(__dirname, ["yaml"], { insertPragma: true });
diff --git a/tests/yaml_insert_pragma/with-pragma.yml b/tests/yaml_insert_pragma/with-pragma.yml
new file mode 100644
index 000000000..d47b12639
--- /dev/null
+++ b/tests/yaml_insert_pragma/with-pragma.yml
@@ -0,0 +1,3 @@
+# @prettier
+
+    123
diff --git a/tests/yaml_insert_pragma/without-pragma.yml b/tests/yaml_insert_pragma/without-pragma.yml
new file mode 100644
index 000000000..c4a580e43
--- /dev/null
+++ b/tests/yaml_insert_pragma/without-pragma.yml
@@ -0,0 +1,3 @@
+
+
+    123
diff --git a/tests/yaml_mapping/3-style.yml b/tests/yaml_mapping/3-style.yml
new file mode 100644
index 000000000..84d94f387
--- /dev/null
+++ b/tests/yaml_mapping/3-style.yml
@@ -0,0 +1,5 @@
+[aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+
+[aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+
+[aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
diff --git a/tests/yaml_mapping/__snapshots__/jsfmt.spec.js.snap b/tests/yaml_mapping/__snapshots__/jsfmt.spec.js.snap
new file mode 100644
index 000000000..1c4343ec6
--- /dev/null
+++ b/tests/yaml_mapping/__snapshots__/jsfmt.spec.js.snap
@@ -0,0 +1,343 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`3-style.yml 1`] = `
+[aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+
+[aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+
+[aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+
+[aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]:
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+
+? [
+    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
+  ]
+: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+
+`;
+
+exports[`3-style.yml 2`] = `
+[aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+
+[aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+
+[aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+
+[aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]:
+    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+
+? [
+      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
+  ]
+: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+
+`;
+
+exports[`array-key.yml 1`] = `
+[1, 2, 3]: 123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[1, 2, 3]: 123
+
+`;
+
+exports[`array-key.yml 2`] = `
+[1, 2, 3]: 123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[1, 2, 3]: 123
+
+`;
+
+exports[`array-value.yml 1`] = `
+123: [1, 2, 3]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+123: [1, 2, 3]
+
+`;
+
+exports[`array-value.yml 2`] = `
+123: [1, 2, 3]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+123: [1, 2, 3]
+
+`;
+
+exports[`comment.yml 1`] = `
+? key
+# comment
+: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglong
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+? key
+# comment
+: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglong
+
+`;
+
+exports[`comment.yml 2`] = `
+? key
+# comment
+: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglong
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+? key
+# comment
+: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglong
+
+`;
+
+exports[`comment-value.yml 1`] = `
+123: # hello
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+123: # hello
+
+`;
+
+exports[`comment-value.yml 2`] = `
+123: # hello
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+123: # hello
+
+`;
+
+exports[`common.yml 1`] = `
+key1: value
+key2: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglong
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+key1: value
+key2:
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglong
+
+`;
+
+exports[`common.yml 2`] = `
+key1: value
+key2: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglong
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+key1: value
+key2:
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglong
+
+`;
+
+exports[`explicit-key.yml 1`] = `
+? key1
+: value
+? key2
+: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglong
+? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglong
+: value
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+key1: value
+key2:
+  longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglong
+? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglong
+: value
+
+`;
+
+exports[`explicit-key.yml 2`] = `
+? key1
+: value
+? key2
+: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglong
+? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglong
+: value
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+key1: value
+key2:
+    longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglong
+? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglong
+: value
+
+`;
+
+exports[`in-sequence.yml 1`] = `
+- a: b
+  c: d
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- a: b
+  c: d
+
+`;
+
+exports[`in-sequence.yml 2`] = `
+- a: b
+  c: d
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- a: b
+  c: d
+
+`;
+
+exports[`key-with-leading-comment.yml 1`] = `
+? # comment
+  key
+: value
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+? # comment
+  key
+: value
+
+`;
+
+exports[`key-with-leading-comment.yml 2`] = `
+? # comment
+  key
+: value
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+? # comment
+  key
+: value
+
+`;
+
+exports[`mapping.yml 1`] = `
+key:
+  key: value
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+key:
+  key: value
+
+`;
+
+exports[`mapping.yml 2`] = `
+key:
+  key: value
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+key:
+    key: value
+
+`;
+
+exports[`middle-comment.yml 1`] = `
+!!map # comment
+a: 123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!map # comment
+a: 123
+
+`;
+
+exports[`middle-comment.yml 2`] = `
+!!map # comment
+a: 123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!map # comment
+a: 123
+
+`;
+
+exports[`middle-comments.yml 1`] = `
+!!map # comment 1
+# comment 2
+a: 123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!map
+# comment 1
+# comment 2
+a: 123
+
+`;
+
+exports[`middle-comments.yml 2`] = `
+!!map # comment 1
+# comment 2
+a: 123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!map
+# comment 1
+# comment 2
+a: 123
+
+`;
+
+exports[`props.yml 1`] = `
+--- !!map &anchor
+a: 123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!map &anchor
+a: 123
+
+`;
+
+exports[`props.yml 2`] = `
+--- !!map &anchor
+a: 123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!map &anchor
+a: 123
+
+`;
+
+exports[`props-in-map.yml 1`] = `
+a: !!map &anchor
+  a: 123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: !!map &anchor
+  a: 123
+
+`;
+
+exports[`props-in-map.yml 2`] = `
+a: !!map &anchor
+  a: 123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: !!map &anchor
+    a: 123
+
+`;
+
+exports[`quote-key.yml 1`] = `
+"a": 123
+'b': 123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+"a": 123
+"b": 123
+
+`;
+
+exports[`quote-key.yml 2`] = `
+"a": 123
+'b': 123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+"a": 123
+"b": 123
+
+`;
+
+exports[`sequence.yml 1`] = `
+key:
+- value
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+key:
+  - value
+
+`;
+
+exports[`sequence.yml 2`] = `
+key:
+- value
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+key:
+    - value
+
+`;
+
+exports[`tag-key.yml 1`] = `
+? !!tag key
+: value
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!tag key: value
+
+`;
+
+exports[`tag-key.yml 2`] = `
+? !!tag key
+: value
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!tag key: value
+
+`;
diff --git a/tests/yaml_mapping/array-key.yml b/tests/yaml_mapping/array-key.yml
new file mode 100644
index 000000000..36f8b236f
--- /dev/null
+++ b/tests/yaml_mapping/array-key.yml
@@ -0,0 +1 @@
+[1, 2, 3]: 123
diff --git a/tests/yaml_mapping/array-value.yml b/tests/yaml_mapping/array-value.yml
new file mode 100644
index 000000000..eba0b28b2
--- /dev/null
+++ b/tests/yaml_mapping/array-value.yml
@@ -0,0 +1 @@
+123: [1, 2, 3]
diff --git a/tests/yaml_mapping/comment-value.yml b/tests/yaml_mapping/comment-value.yml
new file mode 100644
index 000000000..947fb1848
--- /dev/null
+++ b/tests/yaml_mapping/comment-value.yml
@@ -0,0 +1 @@
+123: # hello
diff --git a/tests/yaml_mapping/comment.yml b/tests/yaml_mapping/comment.yml
new file mode 100644
index 000000000..a0315b226
--- /dev/null
+++ b/tests/yaml_mapping/comment.yml
@@ -0,0 +1,3 @@
+? key
+# comment
+: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglong
diff --git a/tests/yaml_mapping/common.yml b/tests/yaml_mapping/common.yml
new file mode 100644
index 000000000..0850fdc12
--- /dev/null
+++ b/tests/yaml_mapping/common.yml
@@ -0,0 +1,2 @@
+key1: value
+key2: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglong
diff --git a/tests/yaml_mapping/explicit-key.yml b/tests/yaml_mapping/explicit-key.yml
new file mode 100644
index 000000000..3223ef8eb
--- /dev/null
+++ b/tests/yaml_mapping/explicit-key.yml
@@ -0,0 +1,6 @@
+? key1
+: value
+? key2
+: longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglong
+? longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglong
+: value
diff --git a/tests/yaml_mapping/in-sequence.yml b/tests/yaml_mapping/in-sequence.yml
new file mode 100644
index 000000000..281baf376
--- /dev/null
+++ b/tests/yaml_mapping/in-sequence.yml
@@ -0,0 +1,2 @@
+- a: b
+  c: d
diff --git a/tests/yaml_mapping/jsfmt.spec.js b/tests/yaml_mapping/jsfmt.spec.js
new file mode 100644
index 000000000..6fbe16994
--- /dev/null
+++ b/tests/yaml_mapping/jsfmt.spec.js
@@ -0,0 +1,2 @@
+run_spec(__dirname, ["yaml"]);
+run_spec(__dirname, ["yaml"], { tabWidth: 4 });
diff --git a/tests/yaml_mapping/key-with-leading-comment.yml b/tests/yaml_mapping/key-with-leading-comment.yml
new file mode 100644
index 000000000..10181ee5b
--- /dev/null
+++ b/tests/yaml_mapping/key-with-leading-comment.yml
@@ -0,0 +1,3 @@
+? # comment
+  key
+: value
diff --git a/tests/yaml_mapping/mapping.yml b/tests/yaml_mapping/mapping.yml
new file mode 100644
index 000000000..8ffdfbfbf
--- /dev/null
+++ b/tests/yaml_mapping/mapping.yml
@@ -0,0 +1,2 @@
+key:
+  key: value
diff --git a/tests/yaml_mapping/middle-comment.yml b/tests/yaml_mapping/middle-comment.yml
new file mode 100644
index 000000000..43939e00c
--- /dev/null
+++ b/tests/yaml_mapping/middle-comment.yml
@@ -0,0 +1,2 @@
+!!map # comment
+a: 123
diff --git a/tests/yaml_mapping/middle-comments.yml b/tests/yaml_mapping/middle-comments.yml
new file mode 100644
index 000000000..6fe49e2bb
--- /dev/null
+++ b/tests/yaml_mapping/middle-comments.yml
@@ -0,0 +1,3 @@
+!!map # comment 1
+# comment 2
+a: 123
diff --git a/tests/yaml_mapping/props-in-map.yml b/tests/yaml_mapping/props-in-map.yml
new file mode 100644
index 000000000..8e3256656
--- /dev/null
+++ b/tests/yaml_mapping/props-in-map.yml
@@ -0,0 +1,2 @@
+a: !!map &anchor
+  a: 123
diff --git a/tests/yaml_mapping/props.yml b/tests/yaml_mapping/props.yml
new file mode 100644
index 000000000..14ffdfd3a
--- /dev/null
+++ b/tests/yaml_mapping/props.yml
@@ -0,0 +1,2 @@
+--- !!map &anchor
+a: 123
diff --git a/tests/yaml_mapping/quote-key.yml b/tests/yaml_mapping/quote-key.yml
new file mode 100644
index 000000000..d3c5d78b7
--- /dev/null
+++ b/tests/yaml_mapping/quote-key.yml
@@ -0,0 +1,2 @@
+"a": 123
+'b': 123
diff --git a/tests/yaml_mapping/sequence.yml b/tests/yaml_mapping/sequence.yml
new file mode 100644
index 000000000..f759dad34
--- /dev/null
+++ b/tests/yaml_mapping/sequence.yml
@@ -0,0 +1,2 @@
+key:
+- value
diff --git a/tests/yaml_mapping/tag-key.yml b/tests/yaml_mapping/tag-key.yml
new file mode 100644
index 000000000..7a035a82a
--- /dev/null
+++ b/tests/yaml_mapping/tag-key.yml
@@ -0,0 +1,2 @@
+? !!tag key
+: value
diff --git a/tests/yaml_plain/__snapshots__/jsfmt.spec.js.snap b/tests/yaml_plain/__snapshots__/jsfmt.spec.js.snap
new file mode 100644
index 000000000..4053273da
--- /dev/null
+++ b/tests/yaml_plain/__snapshots__/jsfmt.spec.js.snap
@@ -0,0 +1,36 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`middle-comment.yml 1`] = `
+!!str # comment
+hello
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!str # comment
+hello
+
+`;
+
+exports[`middle-comments.yml 1`] = `
+!!str # comment 1
+# comment 2
+hello
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!str
+# comment 1
+# comment 2
+hello
+
+`;
+
+exports[`true.yml 1`] = `
+hello
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+hello
+
+`;
+
+exports[`verbatim.yml 1`] = `
+!<hello> hello
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!<hello> hello
+
+`;
diff --git a/tests/yaml_plain/jsfmt.spec.js b/tests/yaml_plain/jsfmt.spec.js
new file mode 100644
index 000000000..89d18c007
--- /dev/null
+++ b/tests/yaml_plain/jsfmt.spec.js
@@ -0,0 +1 @@
+run_spec(__dirname, ["yaml"]);
diff --git a/tests/yaml_plain/middle-comment.yml b/tests/yaml_plain/middle-comment.yml
new file mode 100644
index 000000000..2cdd038af
--- /dev/null
+++ b/tests/yaml_plain/middle-comment.yml
@@ -0,0 +1,2 @@
+!!str # comment
+hello
diff --git a/tests/yaml_plain/middle-comments.yml b/tests/yaml_plain/middle-comments.yml
new file mode 100644
index 000000000..10b3684ee
--- /dev/null
+++ b/tests/yaml_plain/middle-comments.yml
@@ -0,0 +1,3 @@
+!!str # comment 1
+# comment 2
+hello
diff --git a/tests/yaml_plain/true.yml b/tests/yaml_plain/true.yml
new file mode 100644
index 000000000..ce0136250
--- /dev/null
+++ b/tests/yaml_plain/true.yml
@@ -0,0 +1 @@
+hello
diff --git a/tests/yaml_plain/verbatim.yml b/tests/yaml_plain/verbatim.yml
new file mode 100644
index 000000000..ad31ffe42
--- /dev/null
+++ b/tests/yaml_plain/verbatim.yml
@@ -0,0 +1 @@
+!<hello> hello
diff --git a/tests/yaml_prettier_ignore/__snapshots__/jsfmt.spec.js.snap b/tests/yaml_prettier_ignore/__snapshots__/jsfmt.spec.js.snap
new file mode 100644
index 000000000..b3c6f61b0
--- /dev/null
+++ b/tests/yaml_prettier_ignore/__snapshots__/jsfmt.spec.js.snap
@@ -0,0 +1,79 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`document.yml 1`] = `
+# prettier-ignore
+---
+aaaaa:
+           bbbbb
+...
+aaaaa:
+           bbbbb
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+# prettier-ignore
+---
+aaaaa:
+           bbbbb
+...
+aaaaa: bbbbb
+
+`;
+
+exports[`leading-comment.yml 1`] = `
+abc:     123
+# prettier-ignore
+def:     456
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+abc: 123
+# prettier-ignore
+def:     456
+
+`;
+
+exports[`middle-comment.yml 1`] = `
+abc:  !!str #   hello
+   123
+# prettier-ignore
+def:  !!str #   hello
+   456
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+abc: !!str #   hello
+  123
+# prettier-ignore
+def:  !!str #   hello
+   456
+
+`;
+
+exports[`trailing-comma.yml 1`] = `
+[
+  # prettier-ignore
+             {  sss  },       # 123
+    {  qqqq },
+  
+  # prettier-ignore
+          [ccc    ]       # 777
+  , [ddd    ]
+]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  # prettier-ignore
+  {  sss  }, # 123
+  { qqqq },
+
+  # prettier-ignore
+  [ccc    ], # 777
+  [ddd],
+]
+
+`;
+
+exports[`trailing-comment.yml 1`] = `
+abc:     123 # hello
+# prettier-ignore
+def:     456 # hello
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+abc: 123 # hello
+# prettier-ignore
+def:     456 # hello
+
+`;
diff --git a/tests/yaml_prettier_ignore/document.yml b/tests/yaml_prettier_ignore/document.yml
new file mode 100644
index 000000000..2cfba56a6
--- /dev/null
+++ b/tests/yaml_prettier_ignore/document.yml
@@ -0,0 +1,7 @@
+# prettier-ignore
+---
+aaaaa:
+           bbbbb
+...
+aaaaa:
+           bbbbb
diff --git a/tests/yaml_prettier_ignore/jsfmt.spec.js b/tests/yaml_prettier_ignore/jsfmt.spec.js
new file mode 100644
index 000000000..89d18c007
--- /dev/null
+++ b/tests/yaml_prettier_ignore/jsfmt.spec.js
@@ -0,0 +1 @@
+run_spec(__dirname, ["yaml"]);
diff --git a/tests/yaml_prettier_ignore/leading-comment.yml b/tests/yaml_prettier_ignore/leading-comment.yml
new file mode 100644
index 000000000..c9b2b054a
--- /dev/null
+++ b/tests/yaml_prettier_ignore/leading-comment.yml
@@ -0,0 +1,3 @@
+abc:     123
+# prettier-ignore
+def:     456
diff --git a/tests/yaml_prettier_ignore/middle-comment.yml b/tests/yaml_prettier_ignore/middle-comment.yml
new file mode 100644
index 000000000..11a645731
--- /dev/null
+++ b/tests/yaml_prettier_ignore/middle-comment.yml
@@ -0,0 +1,5 @@
+abc:  !!str #   hello
+   123
+# prettier-ignore
+def:  !!str #   hello
+   456
diff --git a/tests/yaml_prettier_ignore/trailing-comma.yml b/tests/yaml_prettier_ignore/trailing-comma.yml
new file mode 100644
index 000000000..84b98fc2e
--- /dev/null
+++ b/tests/yaml_prettier_ignore/trailing-comma.yml
@@ -0,0 +1,9 @@
+[
+  # prettier-ignore
+             {  sss  },       # 123
+    {  qqqq },
+  
+  # prettier-ignore
+          [ccc    ]       # 777
+  , [ddd    ]
+]
diff --git a/tests/yaml_prettier_ignore/trailing-comment.yml b/tests/yaml_prettier_ignore/trailing-comment.yml
new file mode 100644
index 000000000..e247f8d99
--- /dev/null
+++ b/tests/yaml_prettier_ignore/trailing-comment.yml
@@ -0,0 +1,3 @@
+abc:     123 # hello
+# prettier-ignore
+def:     456 # hello
diff --git a/tests/yaml_quote/__snapshots__/jsfmt.spec.js.snap b/tests/yaml_quote/__snapshots__/jsfmt.spec.js.snap
new file mode 100644
index 000000000..5d5e58830
--- /dev/null
+++ b/tests/yaml_quote/__snapshots__/jsfmt.spec.js.snap
@@ -0,0 +1,43 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`quote.yml 1`] = `
+- "123"
+- '123'
+- "''"
+- '""'
+- ''''
+- "\\"\\""
+- '\\n123'
+- "\\n123"
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- "123"
+- "123"
+- "''"
+- '""'
+- "'"
+- '""'
+- '\\n123'
+- "\\n123"
+
+`;
+
+exports[`quote.yml 2`] = `
+- "123"
+- '123'
+- "''"
+- '""'
+- ''''
+- "\\"\\""
+- '\\n123'
+- "\\n123"
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- '123'
+- '123'
+- "''"
+- '""'
+- "'"
+- '""'
+- '\\n123'
+- "\\n123"
+
+`;
diff --git a/tests/yaml_quote/jsfmt.spec.js b/tests/yaml_quote/jsfmt.spec.js
new file mode 100644
index 000000000..e13faa7a5
--- /dev/null
+++ b/tests/yaml_quote/jsfmt.spec.js
@@ -0,0 +1,2 @@
+run_spec(__dirname, ["yaml"]);
+run_spec(__dirname, ["yaml"], { singleQuote: true });
diff --git a/tests/yaml_quote/quote.yml b/tests/yaml_quote/quote.yml
new file mode 100644
index 000000000..dfac998cd
--- /dev/null
+++ b/tests/yaml_quote/quote.yml
@@ -0,0 +1,8 @@
+- "123"
+- '123'
+- "''"
+- '""'
+- ''''
+- "\"\""
+- '\n123'
+- "\n123"
diff --git a/tests/yaml_require_pragma/__snapshots__/jsfmt.spec.js.snap b/tests/yaml_require_pragma/__snapshots__/jsfmt.spec.js.snap
new file mode 100644
index 000000000..fe5a14c9d
--- /dev/null
+++ b/tests/yaml_require_pragma/__snapshots__/jsfmt.spec.js.snap
@@ -0,0 +1,23 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`with-pragma.yml 1`] = `
+# @prettier
+
+    123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+# @prettier
+
+123
+
+`;
+
+exports[`without-pragma.yml 1`] = `
+
+
+    123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+
+    123
+
+`;
diff --git a/tests/yaml_require_pragma/jsfmt.spec.js b/tests/yaml_require_pragma/jsfmt.spec.js
new file mode 100644
index 000000000..f219135fc
--- /dev/null
+++ b/tests/yaml_require_pragma/jsfmt.spec.js
@@ -0,0 +1 @@
+run_spec(__dirname, ["yaml"], { requirePragma: true });
diff --git a/tests/yaml_require_pragma/with-pragma.yml b/tests/yaml_require_pragma/with-pragma.yml
new file mode 100644
index 000000000..d47b12639
--- /dev/null
+++ b/tests/yaml_require_pragma/with-pragma.yml
@@ -0,0 +1,3 @@
+# @prettier
+
+    123
diff --git a/tests/yaml_require_pragma/without-pragma.yml b/tests/yaml_require_pragma/without-pragma.yml
new file mode 100644
index 000000000..c4a580e43
--- /dev/null
+++ b/tests/yaml_require_pragma/without-pragma.yml
@@ -0,0 +1,3 @@
+
+
+    123
diff --git a/tests/yaml_root/__snapshots__/jsfmt.spec.js.snap b/tests/yaml_root/__snapshots__/jsfmt.spec.js.snap
new file mode 100644
index 000000000..d29e66ee2
--- /dev/null
+++ b/tests/yaml_root/__snapshots__/jsfmt.spec.js.snap
@@ -0,0 +1,453 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`documents.yml 1`] = `
+---
+123
+...
+---
+456
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+123
+...
+456
+
+`;
+
+exports[`documents-with-directive.yml 1`] = `
+---
+123
+...
+%YAML 1.2
+---
+456
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+123
+...
+%YAML 1.2
+---
+456
+
+`;
+
+exports[`empty.yml 1`] = `
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+`;
+
+exports[`example.yml 1`] = `
+---
+# Collection Types #############################################################
+################################################################################
+
+# http://yaml.org/type/map.html -----------------------------------------------#
+
+map:
+  # Unordered set of key: value pairs.
+  Block style: !!map
+    Clark : Evans
+    Ingy  : döt Net
+    Oren  : Ben-Kiki
+  Flow style: !!map { Clark: Evans, Ingy: döt Net, Oren: Ben-Kiki }
+
+# http://yaml.org/type/omap.html ----------------------------------------------#
+
+omap:
+  # Explicitly typed ordered map (dictionary).
+  Bestiary: !!omap
+    - aardvark: African pig-like ant eater. Ugly.
+    - anteater: South-American ant eater. Two species.
+    - anaconda: South-American constrictor snake. Scaly.
+    # Etc.
+  # Flow style
+  Numbers: !!omap [ one: 1, two: 2, three : 3 ]
+
+# http://yaml.org/type/pairs.html ---------------------------------------------#
+
+pairs:
+  # Explicitly typed pairs.
+  Block tasks: !!pairs
+    - meeting: with team.
+    - meeting: with boss.
+    - break: lunch.
+    - meeting: with client.
+  Flow tasks: !!pairs [ meeting: with team, meeting: with boss ]
+
+# http://yaml.org/type/set.html -----------------------------------------------#
+
+set:
+  # Explicitly typed set.
+  baseball players: !!set
+    ? Mark McGwire
+    ? Sammy Sosa
+    ? Ken Griffey
+  # Flow style
+  baseball teams: !!set { Boston Red Sox, Detroit Tigers, New York Yankees }
+
+# http://yaml.org/type/seq.html -----------------------------------------------#
+
+seq:
+  # Ordered sequence of nodes
+  Block style: !!seq
+  - Mercury   # Rotates - no light/dark sides.
+  - Venus     # Deadliest. Aptly named.
+  - Earth     # Mostly dirt.
+  - Mars      # Seems empty.
+  - Jupiter   # The king.
+  - Saturn    # Pretty.
+  - Uranus    # Where the sun hardly shines.
+  - Neptune   # Boring. No rings.
+  - Pluto     # You call this a planet?
+  Flow style: !!seq [ Mercury, Venus, Earth, Mars,      # Rocks
+                      Jupiter, Saturn, Uranus, Neptune, # Gas
+                      Pluto ]                           # Overrated
+
+
+# Scalar Types #################################################################
+################################################################################
+
+# http://yaml.org/type/bool.html ----------------------------------------------#
+
+bool:
+  - true
+  - True
+  - TRUE
+  - false
+  - False
+  - FALSE
+
+# http://yaml.org/type/float.html ---------------------------------------------#
+
+float:
+  canonical: 6.8523015e+5
+  exponentioal: 685.230_15e+03
+  fixed: 685_230.15
+  sexagesimal: 190:20:30.15
+  negative infinity: -.inf
+  not a number: .NaN
+
+# http://yaml.org/type/int.html -----------------------------------------------#
+
+int:
+  canonical: 685230
+  decimal: +685_230
+  octal: 02472256
+  hexadecimal: 0x_0A_74_AE
+  binary: 0b1010_0111_0100_1010_1110
+  sexagesimal: 190:20:30
+
+# http://yaml.org/type/merge.html ---------------------------------------------#
+
+merge:
+  - &CENTER { x: 1, y: 2 }
+  - &LEFT { x: 0, y: 2 }
+  - &BIG { r: 10 }
+  - &SMALL { r: 1 }
+  
+  # All the following maps are equal:
+  
+  - # Explicit keys
+    x: 1
+    y: 2
+    r: 10
+    label: nothing
+  
+  - # Merge one map
+    << : *CENTER
+    r: 10
+    label: center
+  
+  - # Merge multiple maps
+    << : [ *CENTER, *BIG ]
+    label: center/big
+  
+  - # Override
+    << : [ *BIG, *LEFT, *SMALL ]
+    x: 1
+    label: big/left/small
+
+# http://yaml.org/type/null.html ----------------------------------------------#
+
+null:
+  # This mapping has four keys,
+  # one has a value.
+  empty:
+  canonical: ~
+  english: null
+  ~: null key
+  # This sequence has five
+  # entries, two have values.
+  sparse:
+    - ~
+    - 2nd entry
+    -
+    - 4th entry
+    - Null
+
+# http://yaml.org/type/str.html -----------------------------------------------#
+
+string: abcd
+
+# http://yaml.org/type/timestamp.html -----------------------------------------#
+
+timestamp:
+  canonical:        2001-12-15T02:59:43.1Z
+  valid iso8601:    2001-12-14t21:59:43.10-05:00
+  space separated:  2001-12-14 21:59:43.10 -5
+  no time zone (Z): 2001-12-15 2:59:43.10
+  date (00:00:00Z): 2002-12-14
+
+
+# JavaScript Specific Types ####################################################
+################################################################################
+
+# https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/RegExp
+
+regexp:
+  simple: !!js/regexp      foobar
+  modifiers: !!js/regexp   /foobar/mi
+
+# https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/undefined
+
+undefined: !!js/undefined ~
+
+# https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Function
+
+function: !!js/function >
+  function foobar() {
+    return 'Wow! JS-YAML Rocks!';
+  }
+
+
+# Custom types #################################################################
+################################################################################
+
+
+# JS-YAML allows you to specify a custom YAML types for your structures.
+# This is a simple example of custom constructor defined in \`js/demo.js\` for
+# custom \`!sexy\` type:
+#
+# var SexyYamlType = new jsyaml.Type('!sexy', {
+#   kind: 'sequence',
+#   construct: function (data) {
+#     return data.map(function (string) { return 'sexy ' + string; });
+#   }
+# });
+#
+# var SEXY_SCHEMA = jsyaml.Schema.create([ SexyYamlType ]);
+#
+# result = jsyaml.load(yourData, { schema: SEXY_SCHEMA });
+
+foobar: !sexy
+  - bunny
+  - chocolate
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+# Collection Types #############################################################
+################################################################################
+
+# http://yaml.org/type/map.html -----------------------------------------------#
+
+map:
+  # Unordered set of key: value pairs.
+  Block style: !!map
+    Clark: Evans
+    Ingy: döt Net
+    Oren: Ben-Kiki
+  Flow style: !!map { Clark: Evans, Ingy: döt Net, Oren: Ben-Kiki }
+
+# http://yaml.org/type/omap.html ----------------------------------------------#
+
+omap:
+  # Explicitly typed ordered map (dictionary).
+  Bestiary: !!omap
+    - aardvark: African pig-like ant eater. Ugly.
+    - anteater: South-American ant eater. Two species.
+    - anaconda: South-American constrictor snake. Scaly.
+  # Etc.
+  # Flow style
+  Numbers: !!omap [one: 1, two: 2, three: 3]
+
+# http://yaml.org/type/pairs.html ---------------------------------------------#
+
+pairs:
+  # Explicitly typed pairs.
+  Block tasks: !!pairs
+    - meeting: with team.
+    - meeting: with boss.
+    - break: lunch.
+    - meeting: with client.
+  Flow tasks: !!pairs [meeting: with team, meeting: with boss]
+
+# http://yaml.org/type/set.html -----------------------------------------------#
+
+set:
+  # Explicitly typed set.
+  baseball players: !!set
+    ? Mark McGwire
+    ? Sammy Sosa
+    ? Ken Griffey
+  # Flow style
+  baseball teams: !!set { Boston Red Sox, Detroit Tigers, New York Yankees }
+
+# http://yaml.org/type/seq.html -----------------------------------------------#
+
+seq:
+  # Ordered sequence of nodes
+  Block style: !!seq
+    - Mercury # Rotates - no light/dark sides.
+    - Venus # Deadliest. Aptly named.
+    - Earth # Mostly dirt.
+    - Mars # Seems empty.
+    - Jupiter # The king.
+    - Saturn # Pretty.
+    - Uranus # Where the sun hardly shines.
+    - Neptune # Boring. No rings.
+    - Pluto # You call this a planet?
+  Flow style: !!seq [
+      Mercury,
+      Venus,
+      Earth,
+      Mars, # Rocks
+      Jupiter,
+      Saturn,
+      Uranus,
+      Neptune, # Gas
+      Pluto,
+    ] # Overrated
+
+# Scalar Types #################################################################
+################################################################################
+
+# http://yaml.org/type/bool.html ----------------------------------------------#
+
+bool:
+  - true
+  - True
+  - TRUE
+  - false
+  - False
+  - FALSE
+
+# http://yaml.org/type/float.html ---------------------------------------------#
+
+float:
+  canonical: 6.8523015e+5
+  exponentioal: 685.230_15e+03
+  fixed: 685_230.15
+  sexagesimal: 190:20:30.15
+  negative infinity: -.inf
+  not a number: .NaN
+
+# http://yaml.org/type/int.html -----------------------------------------------#
+
+int:
+  canonical: 685230
+  decimal: +685_230
+  octal: 02472256
+  hexadecimal: 0x_0A_74_AE
+  binary: 0b1010_0111_0100_1010_1110
+  sexagesimal: 190:20:30
+
+# http://yaml.org/type/merge.html ---------------------------------------------#
+
+merge:
+  - &CENTER { x: 1, y: 2 }
+  - &LEFT { x: 0, y: 2 }
+  - &BIG { r: 10 }
+  - &SMALL { r: 1 }
+
+  # All the following maps are equal:
+
+  - # Explicit keys
+    x: 1
+    y: 2
+    r: 10
+    label: nothing
+
+  - # Merge one map
+    <<: *CENTER
+    r: 10
+    label: center
+
+  - # Merge multiple maps
+    <<: [*CENTER, *BIG]
+    label: center/big
+
+  - # Override
+    <<: [*BIG, *LEFT, *SMALL]
+    x: 1
+    label: big/left/small
+
+# http://yaml.org/type/null.html ----------------------------------------------#
+
+null:
+  # This mapping has four keys,
+  # one has a value.
+  ? empty
+  canonical: ~
+  english: null
+  ~: null key
+  # This sequence has five
+  # entries, two have values.
+  sparse:
+    - ~
+    - 2nd entry
+    -
+    - 4th entry
+    - Null
+
+# http://yaml.org/type/str.html -----------------------------------------------#
+
+string: abcd
+
+# http://yaml.org/type/timestamp.html -----------------------------------------#
+
+timestamp:
+  canonical: 2001-12-15T02:59:43.1Z
+  valid iso8601: 2001-12-14t21:59:43.10-05:00
+  space separated: 2001-12-14 21:59:43.10 -5
+  no time zone (Z): 2001-12-15 2:59:43.10
+  date (00:00:00Z): 2002-12-14
+
+# JavaScript Specific Types ####################################################
+################################################################################
+
+# https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/RegExp
+
+regexp:
+  simple: !!js/regexp foobar
+  modifiers: !!js/regexp /foobar/mi
+
+# https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/undefined
+
+undefined: !!js/undefined ~
+
+# https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Function
+
+function: !!js/function >
+  function foobar() {
+    return 'Wow! JS-YAML Rocks!';
+  }
+
+# Custom types #################################################################
+################################################################################
+
+# JS-YAML allows you to specify a custom YAML types for your structures.
+# This is a simple example of custom constructor defined in \`js/demo.js\` for
+# custom \`!sexy\` type:
+#
+# var SexyYamlType = new jsyaml.Type('!sexy', {
+#   kind: 'sequence',
+#   construct: function (data) {
+#     return data.map(function (string) { return 'sexy ' + string; });
+#   }
+# });
+#
+# var SEXY_SCHEMA = jsyaml.Schema.create([ SexyYamlType ]);
+#
+# result = jsyaml.load(yourData, { schema: SEXY_SCHEMA });
+
+foobar: !sexy
+  - bunny
+  - chocolate
+
+`;
diff --git a/tests/yaml_root/documents-with-directive.yml b/tests/yaml_root/documents-with-directive.yml
new file mode 100644
index 000000000..ac27a78ce
--- /dev/null
+++ b/tests/yaml_root/documents-with-directive.yml
@@ -0,0 +1,6 @@
+---
+123
+...
+%YAML 1.2
+---
+456
diff --git a/tests/yaml_root/documents.yml b/tests/yaml_root/documents.yml
new file mode 100644
index 000000000..80a0d4a7f
--- /dev/null
+++ b/tests/yaml_root/documents.yml
@@ -0,0 +1,5 @@
+---
+123
+...
+---
+456
diff --git a/tests/yaml_root/empty.yml b/tests/yaml_root/empty.yml
new file mode 100644
index 000000000..e69de29bb
diff --git a/tests/yaml_root/example.yml b/tests/yaml_root/example.yml
new file mode 100644
index 000000000..bb7de4f66
--- /dev/null
+++ b/tests/yaml_root/example.yml
@@ -0,0 +1,205 @@
+---
+# Collection Types #############################################################
+################################################################################
+
+# http://yaml.org/type/map.html -----------------------------------------------#
+
+map:
+  # Unordered set of key: value pairs.
+  Block style: !!map
+    Clark : Evans
+    Ingy  : döt Net
+    Oren  : Ben-Kiki
+  Flow style: !!map { Clark: Evans, Ingy: döt Net, Oren: Ben-Kiki }
+
+# http://yaml.org/type/omap.html ----------------------------------------------#
+
+omap:
+  # Explicitly typed ordered map (dictionary).
+  Bestiary: !!omap
+    - aardvark: African pig-like ant eater. Ugly.
+    - anteater: South-American ant eater. Two species.
+    - anaconda: South-American constrictor snake. Scaly.
+    # Etc.
+  # Flow style
+  Numbers: !!omap [ one: 1, two: 2, three : 3 ]
+
+# http://yaml.org/type/pairs.html ---------------------------------------------#
+
+pairs:
+  # Explicitly typed pairs.
+  Block tasks: !!pairs
+    - meeting: with team.
+    - meeting: with boss.
+    - break: lunch.
+    - meeting: with client.
+  Flow tasks: !!pairs [ meeting: with team, meeting: with boss ]
+
+# http://yaml.org/type/set.html -----------------------------------------------#
+
+set:
+  # Explicitly typed set.
+  baseball players: !!set
+    ? Mark McGwire
+    ? Sammy Sosa
+    ? Ken Griffey
+  # Flow style
+  baseball teams: !!set { Boston Red Sox, Detroit Tigers, New York Yankees }
+
+# http://yaml.org/type/seq.html -----------------------------------------------#
+
+seq:
+  # Ordered sequence of nodes
+  Block style: !!seq
+  - Mercury   # Rotates - no light/dark sides.
+  - Venus     # Deadliest. Aptly named.
+  - Earth     # Mostly dirt.
+  - Mars      # Seems empty.
+  - Jupiter   # The king.
+  - Saturn    # Pretty.
+  - Uranus    # Where the sun hardly shines.
+  - Neptune   # Boring. No rings.
+  - Pluto     # You call this a planet?
+  Flow style: !!seq [ Mercury, Venus, Earth, Mars,      # Rocks
+                      Jupiter, Saturn, Uranus, Neptune, # Gas
+                      Pluto ]                           # Overrated
+
+
+# Scalar Types #################################################################
+################################################################################
+
+# http://yaml.org/type/bool.html ----------------------------------------------#
+
+bool:
+  - true
+  - True
+  - TRUE
+  - false
+  - False
+  - FALSE
+
+# http://yaml.org/type/float.html ---------------------------------------------#
+
+float:
+  canonical: 6.8523015e+5
+  exponentioal: 685.230_15e+03
+  fixed: 685_230.15
+  sexagesimal: 190:20:30.15
+  negative infinity: -.inf
+  not a number: .NaN
+
+# http://yaml.org/type/int.html -----------------------------------------------#
+
+int:
+  canonical: 685230
+  decimal: +685_230
+  octal: 02472256
+  hexadecimal: 0x_0A_74_AE
+  binary: 0b1010_0111_0100_1010_1110
+  sexagesimal: 190:20:30
+
+# http://yaml.org/type/merge.html ---------------------------------------------#
+
+merge:
+  - &CENTER { x: 1, y: 2 }
+  - &LEFT { x: 0, y: 2 }
+  - &BIG { r: 10 }
+  - &SMALL { r: 1 }
+  
+  # All the following maps are equal:
+  
+  - # Explicit keys
+    x: 1
+    y: 2
+    r: 10
+    label: nothing
+  
+  - # Merge one map
+    << : *CENTER
+    r: 10
+    label: center
+  
+  - # Merge multiple maps
+    << : [ *CENTER, *BIG ]
+    label: center/big
+  
+  - # Override
+    << : [ *BIG, *LEFT, *SMALL ]
+    x: 1
+    label: big/left/small
+
+# http://yaml.org/type/null.html ----------------------------------------------#
+
+null:
+  # This mapping has four keys,
+  # one has a value.
+  empty:
+  canonical: ~
+  english: null
+  ~: null key
+  # This sequence has five
+  # entries, two have values.
+  sparse:
+    - ~
+    - 2nd entry
+    -
+    - 4th entry
+    - Null
+
+# http://yaml.org/type/str.html -----------------------------------------------#
+
+string: abcd
+
+# http://yaml.org/type/timestamp.html -----------------------------------------#
+
+timestamp:
+  canonical:        2001-12-15T02:59:43.1Z
+  valid iso8601:    2001-12-14t21:59:43.10-05:00
+  space separated:  2001-12-14 21:59:43.10 -5
+  no time zone (Z): 2001-12-15 2:59:43.10
+  date (00:00:00Z): 2002-12-14
+
+
+# JavaScript Specific Types ####################################################
+################################################################################
+
+# https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/RegExp
+
+regexp:
+  simple: !!js/regexp      foobar
+  modifiers: !!js/regexp   /foobar/mi
+
+# https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/undefined
+
+undefined: !!js/undefined ~
+
+# https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Function
+
+function: !!js/function >
+  function foobar() {
+    return 'Wow! JS-YAML Rocks!';
+  }
+
+
+# Custom types #################################################################
+################################################################################
+
+
+# JS-YAML allows you to specify a custom YAML types for your structures.
+# This is a simple example of custom constructor defined in `js/demo.js` for
+# custom `!sexy` type:
+#
+# var SexyYamlType = new jsyaml.Type('!sexy', {
+#   kind: 'sequence',
+#   construct: function (data) {
+#     return data.map(function (string) { return 'sexy ' + string; });
+#   }
+# });
+#
+# var SEXY_SCHEMA = jsyaml.Schema.create([ SexyYamlType ]);
+#
+# result = jsyaml.load(yourData, { schema: SEXY_SCHEMA });
+
+foobar: !sexy
+  - bunny
+  - chocolate
diff --git a/tests/yaml_root/jsfmt.spec.js b/tests/yaml_root/jsfmt.spec.js
new file mode 100644
index 000000000..89d18c007
--- /dev/null
+++ b/tests/yaml_root/jsfmt.spec.js
@@ -0,0 +1 @@
+run_spec(__dirname, ["yaml"]);
diff --git a/tests/yaml_sequence/__snapshots__/jsfmt.spec.js.snap b/tests/yaml_sequence/__snapshots__/jsfmt.spec.js.snap
new file mode 100644
index 000000000..0ba4dca14
--- /dev/null
+++ b/tests/yaml_sequence/__snapshots__/jsfmt.spec.js.snap
@@ -0,0 +1,153 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`items.yml 1`] = `
+- 123
+- 456
+- 789
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- 123
+- 456
+- 789
+
+`;
+
+exports[`items.yml 2`] = `
+- 123
+- 456
+- 789
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- 123
+- 456
+- 789
+
+`;
+
+exports[`middle-comment.yml 1`] = `
+!!set # comment
+- 123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!set # comment
+- 123
+
+`;
+
+exports[`middle-comment.yml 2`] = `
+!!set # comment
+- 123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!set # comment
+- 123
+
+`;
+
+exports[`middle-comments.yml 1`] = `
+!!set # comment 1
+# comment 2
+- 123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!set
+# comment 1
+# comment 2
+- 123
+
+`;
+
+exports[`middle-comments.yml 2`] = `
+!!set # comment 1
+# comment 2
+- 123
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!set
+# comment 1
+# comment 2
+- 123
+
+`;
+
+exports[`nested.yml 1`] = `
+- 1
+- - 2-1
+  - 2-2
+- - - 3-1-1
+    - 3-2-1
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- 1
+- - 2-1
+  - 2-2
+- - - 3-1-1
+    - 3-2-1
+
+`;
+
+exports[`nested.yml 2`] = `
+- 1
+- - 2-1
+  - 2-2
+- - - 3-1-1
+    - 3-2-1
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- 1
+- - 2-1
+  - 2-2
+- - - 3-1-1
+    - 3-2-1
+
+`;
+
+exports[`null-item.yml 1`] = `
+-
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-
+
+`;
+
+exports[`null-item.yml 2`] = `
+-
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-
+
+`;
+
+exports[`props.yml 1`] = `
+--- !!set &anchor
+- 123
+- 456
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!set &anchor
+- 123
+- 456
+
+`;
+
+exports[`props.yml 2`] = `
+--- !!set &anchor
+- 123
+- 456
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!set &anchor
+- 123
+- 456
+
+`;
+
+exports[`props-in-map.yml 1`] = `
+a: !!set &anchor
+- 123
+- 456
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: !!set &anchor
+  - 123
+  - 456
+
+`;
+
+exports[`props-in-map.yml 2`] = `
+a: !!set &anchor
+- 123
+- 456
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: !!set &anchor
+    - 123
+    - 456
+
+`;
diff --git a/tests/yaml_sequence/items.yml b/tests/yaml_sequence/items.yml
new file mode 100644
index 000000000..a9b4dce96
--- /dev/null
+++ b/tests/yaml_sequence/items.yml
@@ -0,0 +1,3 @@
+- 123
+- 456
+- 789
diff --git a/tests/yaml_sequence/jsfmt.spec.js b/tests/yaml_sequence/jsfmt.spec.js
new file mode 100644
index 000000000..6fbe16994
--- /dev/null
+++ b/tests/yaml_sequence/jsfmt.spec.js
@@ -0,0 +1,2 @@
+run_spec(__dirname, ["yaml"]);
+run_spec(__dirname, ["yaml"], { tabWidth: 4 });
diff --git a/tests/yaml_sequence/middle-comment.yml b/tests/yaml_sequence/middle-comment.yml
new file mode 100644
index 000000000..d418e494e
--- /dev/null
+++ b/tests/yaml_sequence/middle-comment.yml
@@ -0,0 +1,2 @@
+!!set # comment
+- 123
diff --git a/tests/yaml_sequence/middle-comments.yml b/tests/yaml_sequence/middle-comments.yml
new file mode 100644
index 000000000..e75c5d1a2
--- /dev/null
+++ b/tests/yaml_sequence/middle-comments.yml
@@ -0,0 +1,3 @@
+!!set # comment 1
+# comment 2
+- 123
diff --git a/tests/yaml_sequence/nested.yml b/tests/yaml_sequence/nested.yml
new file mode 100644
index 000000000..2e11894da
--- /dev/null
+++ b/tests/yaml_sequence/nested.yml
@@ -0,0 +1,5 @@
+- 1
+- - 2-1
+  - 2-2
+- - - 3-1-1
+    - 3-2-1
diff --git a/tests/yaml_sequence/null-item.yml b/tests/yaml_sequence/null-item.yml
new file mode 100644
index 000000000..39cdd0ded
--- /dev/null
+++ b/tests/yaml_sequence/null-item.yml
@@ -0,0 +1 @@
+-
diff --git a/tests/yaml_sequence/props-in-map.yml b/tests/yaml_sequence/props-in-map.yml
new file mode 100644
index 000000000..e3cdfb43c
--- /dev/null
+++ b/tests/yaml_sequence/props-in-map.yml
@@ -0,0 +1,3 @@
+a: !!set &anchor
+- 123
+- 456
diff --git a/tests/yaml_sequence/props.yml b/tests/yaml_sequence/props.yml
new file mode 100644
index 000000000..14b8ecf50
--- /dev/null
+++ b/tests/yaml_sequence/props.yml
@@ -0,0 +1,3 @@
+--- !!set &anchor
+- 123
+- 456
diff --git a/tests/yaml_spec/__snapshots__/jsfmt.spec.js.snap b/tests/yaml_spec/__snapshots__/jsfmt.spec.js.snap
new file mode 100644
index 000000000..eaecada89
--- /dev/null
+++ b/tests/yaml_spec/__snapshots__/jsfmt.spec.js.snap
@@ -0,0 +1,2782 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`aliases-in-block-sequence.yml 1`] = `
+- &a a
+- &b b
+- *a
+- *b
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- &a a
+- &b b
+- *a
+- *b
+
+`;
+
+exports[`aliases-in-explicit-block-mapping.yml 1`] = `
+? &a a
+: &b b
+: *a
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+&a a: &b b
+: *a
+
+`;
+
+exports[`allowed-characters-in-alias.yml 1`] = `
+a: &:@*!$"<foo>: scalar a
+b: *:@*!$"<foo>:
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: &:@*!$"<foo>: scalar a
+b: *:@*!$"<foo>:
+
+`;
+
+exports[`allowed-characters-in-keys.yml 1`] = `
+a!"#$%&'()*+,-./09:;<=>?@AZ[\\]^_\`az{|}~: safe
+?foo: safe question mark
+:foo: safe colon
+-foo: safe dash
+this is#not: a comment
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a!"#$%&'()*+,-./09:;<=>?@AZ[\\]^_\`az{|}~: safe
+?foo: safe question mark
+:foo: safe colon
+-foo: safe dash
+this is#not: a comment
+
+`;
+
+exports[`allowed-characters-in-plain-scalars.yml 1`] = `
+safe: a!"#$%&'()*+,-./09:;<=>?@AZ[\\]^_\`az{|}~
+     !"#$%&'()*+,-./09:;<=>?@AZ[\\]^_\`az{|}~
+safe question mark: ?foo
+safe colon: :foo
+safe dash: -foo
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+safe:
+  a!"#$%&'()*+,-./09:;<=>?@AZ[\\]^_\`az{|}~ !"#$%&'()*+,-./09:;<=>?@AZ[\\]^_\`az{|}~
+safe question mark: ?foo
+safe colon: :foo
+safe dash: -foo
+
+`;
+
+exports[`allowed-characters-in-quoted-mapping-key.yml 1`] = `
+"foo\\nbar:baz\\tx \\\\$%^&*()x": 23
+'x\\ny:z\\tx $%^&*()x': 24
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+"foo\\nbar:baz\\tx \\\\$%^&*()x": 23
+'x\\ny:z\\tx $%^&*()x': 24
+
+`;
+
+exports[`anchor-before-zero-indented-sequence.yml 1`] = `
+---
+seq:
+ &anchor
+- a
+- b
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+seq: &anchor
+  - a
+  - b
+
+`;
+
+exports[`anchor-with-unicode-character.yml 1`] = `
+---
+- &😁 unicode anchor
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- &😁 unicode anchor
+
+`;
+
+exports[`anchors-and-tags.yml 1`] = `
+ - &a !!str a
+ - !!int 2
+ - !!int &c 4
+ - &d d
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- !!str &a a
+- !!int 2
+- !!int &c 4
+- &d d
+
+`;
+
+exports[`anchors-in-mapping.yml 1`] = `
+&a a: b
+c: &d d
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+&a a: b
+c: &d d
+
+`;
+
+exports[`anchors-with-colon-in-name.yml 1`] = `
+&a: key: &a value
+foo:
+  *a:
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+&a: key: &a value
+foo: *a:
+
+`;
+
+exports[`backslashes-in-singlequotes.yml 1`] = `
+'foo: bar\\': baz'
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+'foo: bar\\': baz'
+
+`;
+
+exports[`bare-document-after-document-end-marker.yml 1`] = `
+---
+scalar1
+...
+key: value
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+scalar1
+...
+key: value
+
+`;
+
+exports[`blank-lines.yml 1`] = `
+foo: 1
+
+bar: 2
+    
+text: |
+  a
+    
+  b
+
+  c
+ 
+  d
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+foo: 1
+
+bar: 2
+
+text: |
+  a
+    
+  b
+
+  c
+
+  d
+
+`;
+
+exports[`block-mapping-with-missing-values.yml 1`] = `
+? a
+? b
+c:
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+? a
+? b
+? c
+
+`;
+
+exports[`block-mapping-with-multiline-scalars.yml 1`] = `
+? a
+  true
+: null
+  d
+? e
+  42
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a true: null d
+? e 42
+
+`;
+
+exports[`block-mappings-in-block-sequence.yml 1`] = `
+ - key: value
+   key2: value2
+ -
+   key3: value3
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- key: value
+  key2: value2
+- key3: value3
+
+`;
+
+exports[`block-scalar-indicator-order.yml 1`] = `
+- |2-
+  explicit indent and chomp
+- |-2
+  chomp and explicit indent
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- |2-
+  explicit indent and chomp
+- |2-
+  chomp and explicit indent
+
+`;
+
+exports[`block-scalar-keep.yml 1`] = `
+--- |+
+ ab
+ 
+  
+...
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+|+
+  ab
+
+   
+
+`;
+
+exports[`block-scalar-strip.yml 1`] = `
+|-
+ ab
+ 
+ 
+...
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+|-
+  ab
+
+`;
+
+exports[`block-scalar-with-spaces-only.yml 1`] = `
+empty block scalar: >
+ 
+  
+   
+ # comment
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+empty block scalar: >
+# comment
+
+`;
+
+exports[`block-sequence-in-block-mapping.yml 1`] = `
+key:
+ - item1
+ - item2
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+key:
+  - item1
+  - item2
+
+`;
+
+exports[`block-sequence-in-block-sequence.yml 1`] = `
+- - s1_i1
+  - s1_i2
+- s2
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- - s1_i1
+  - s1_i2
+- s2
+
+`;
+
+exports[`block-submapping.yml 1`] = `
+foo:
+  bar: 1
+baz: 2
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+foo:
+  bar: 1
+baz: 2
+
+`;
+
+exports[`colon-in-double-quoted-string.yml 1`] = `
+"foo: bar\\": baz"
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+'foo: bar": baz'
+
+`;
+
+exports[`comment-in-flow-sequence-before-comma.yml 1`] = `
+---
+[ word1
+# comment
+, word2]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[
+  word1,
+  # comment
+  word2,
+]
+
+`;
+
+exports[`construct-binary.yml 1`] = `
+canonical: !!binary "\\
+ R0lGODlhDAAMAIQAAP//9/X17unp5WZmZgAAAOfn515eXvPz7Y6OjuDg4J+fn5\\
+ OTk6enp56enmlpaWNjY6Ojo4SEhP/++f/++f/++f/++f/++f/++f/++f/++f/+\\
+ +f/++f/++f/++f/++f/++SH+Dk1hZGUgd2l0aCBHSU1QACwAAAAADAAMAAAFLC\\
+ AgjoEwnuNAFOhpEMTRiggcz4BNJHrv/zCFcLiwMWYNG84BwwEeECcgggoBADs="
+generic: !!binary |
+ R0lGODlhDAAMAIQAAP//9/X17unp5WZmZgAAAOfn515eXvPz7Y6OjuDg4J+fn5
+ OTk6enp56enmlpaWNjY6Ojo4SEhP/++f/++f/++f/++f/++f/++f/++f/++f/+
+ +f/++f/++f/++f/++f/++SH+Dk1hZGUgd2l0aCBHSU1QACwAAAAADAAMAAAFLC
+ AgjoEwnuNAFOhpEMTRiggcz4BNJHrv/zCFcLiwMWYNG84BwwEeECcgggoBADs=
+description:
+ The binary value above is a tiny arrow encoded as a gif image.
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+canonical:
+  !!binary "\\
+ R0lGODlhDAAMAIQAAP//9/X17unp5WZmZgAAAOfn515eXvPz7Y6OjuDg4J+fn5\\
+ OTk6enp56enmlpaWNjY6Ojo4SEhP/++f/++f/++f/++f/++f/++f/++f/++f/+\\
+ +f/++f/++f/++f/++f/++SH+Dk1hZGUgd2l0aCBHSU1QACwAAAAADAAMAAAFLC\\
+ AgjoEwnuNAFOhpEMTRiggcz4BNJHrv/zCFcLiwMWYNG84BwwEeECcgggoBADs="
+generic: !!binary |
+  R0lGODlhDAAMAIQAAP//9/X17unp5WZmZgAAAOfn515eXvPz7Y6OjuDg4J+fn5
+  OTk6enp56enmlpaWNjY6Ojo4SEhP/++f/++f/++f/++f/++f/++f/++f/++f/+
+  +f/++f/++f/++f/++f/++SH+Dk1hZGUgd2l0aCBHSU1QACwAAAAADAAMAAAFLC
+  AgjoEwnuNAFOhpEMTRiggcz4BNJHrv/zCFcLiwMWYNG84BwwEeECcgggoBADs=
+description: The binary value above is a tiny arrow encoded as a gif image.
+
+`;
+
+exports[`document-start-on-last-line.yml 1`] = `
+---
+a: b
+---
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: b
+...
+
+
+`;
+
+exports[`document-with-footer.yml 1`] = `
+aaa: bbb
+...
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+aaa: bbb
+
+`;
+
+exports[`empty-lines-at-end-of-document.yml 1`] = `
+:
+
+
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+:
+
+`;
+
+exports[`empty-lines-between-mapping-elements.yml 1`] = `
+1: 2
+
+
+3: 4
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+1: 2
+
+3: 4
+
+`;
+
+exports[`empty-stream.yml 1`] = `
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+`;
+
+exports[`escaped-slash-in-double-quotes.yml 1`] = `
+escaped slash: "a\\/b"
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+escaped slash: "a\\/b"
+
+`;
+
+exports[`explicit-non-specific-tag.yml 1`] = `
+! a
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+! a
+
+`;
+
+exports[`flow-mapping.yml 1`] = `
+{foo: you, bar: far}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ foo: you, bar: far }
+
+`;
+
+exports[`flow-mapping-in-block-sequence.yml 1`] = `
+- {a: b}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- { a: b }
+
+`;
+
+exports[`flow-sequence.yml 1`] = `
+[foo, bar, 42]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[foo, bar, 42]
+
+`;
+
+exports[`flow-sequence-in-block-mapping.yml 1`] = `
+a: [b, c]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: [b, c]
+
+`;
+
+exports[`flow-sequence-in-flow-mapping.yml 1`] = `
+{a: [b, c], [d, e]: f}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ a: [b, c], [d, e]: f }
+
+`;
+
+exports[`flow-sequence-in-flow-sequence.yml 1`] = `
+[a, [b, c]]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[a, [b, c]]
+
+`;
+
+exports[`folded-block-scalar.yml 1`] = `
+>
+ ab
+ cd
+ 
+ ef
+
+
+ gh
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+>
+  ab cd
+
+  ef
+
+
+  gh
+
+`;
+
+exports[`implicit-flow-mapping-key-on-one-line.yml 1`] = `
+[flow]: block
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[flow]: block
+
+`;
+
+exports[`key-with-anchor-after-missing-explicit-mapping-value.yml 1`] = `
+---
+a: 1
+? b
+&anchor c: 3
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: 1
+? b
+&anchor c: 3
+
+`;
+
+exports[`literal-block-scalar.yml 1`] = `
+a: |
+ ab
+ 
+ cd
+ ef
+ 
+
+...
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: |
+  ab
+
+  cd
+  ef
+
+
+`;
+
+exports[`literal-unicode.yml 1`] = `
+---
+wanted: love ♥ and peace ☮
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+wanted: love ♥ and peace ☮
+
+`;
+
+exports[`lookahead-test-cases.yml 1`] = `
+- bla"keks: foo
+- bla]keks: foo
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- bla"keks: foo
+- bla]keks: foo
+
+`;
+
+exports[`mapping-key-and-flow-sequence-item-anchors.yml 1`] = `
+---
+&mapping
+&key [ &item a, b, c ]: value
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+&mapping
+&key [&item a, b, c]: value
+
+`;
+
+exports[`mapping-with-anchor-on-document-start-line.yml 1`] = `
+--- &anchor a: b
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+&anchor a: b
+
+`;
+
+exports[`mixed-block-mapping-explicit-to-implicit.yml 1`] = `
+? a
+: 13
+1.5: d
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: 13
+1.5: d
+
+`;
+
+exports[`mixed-block-mapping-implicit-to-explicit.yml 1`] = `
+a: 4.2
+? 23
+: d
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: 4.2
+23: d
+
+`;
+
+exports[`multi-level-mapping-indent.yml 1`] = `
+a:
+  b:
+    c: d
+  e:
+    f: g
+h: i
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a:
+  b:
+    c: d
+  e:
+    f: g
+h: i
+
+`;
+
+exports[`multiline-plain-scalar-with-empty-line.yml 1`] = `
+---
+plain: a
+ b
+
+ c
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+plain: a b
+
+  c
+
+`;
+
+exports[`multiline-scalar-at-top-level.yml 1`] = `
+a
+b  
+  c
+d
+
+e
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a b c d
+
+e
+
+`;
+
+exports[`multiline-scalar-in-mapping.yml 1`] = `
+a: b
+ c
+d:
+ e
+  f
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: b c
+d: e f
+
+`;
+
+exports[`multiline-scalar-that-looks-like-a-yaml-directive.yml 1`] = `
+---
+scalar
+%YAML 1.2
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+scalar %YAML 1.2
+
+`;
+
+exports[`multiple-entry-block-sequence.yml 1`] = `
+- foo
+- bar
+- 42
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- foo
+- bar
+- 42
+
+`;
+
+exports[`multiple-pair-block-mapping.yml 1`] = `
+foo: blue
+bar: arrr
+baz: jazz
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+foo: blue
+bar: arrr
+baz: jazz
+
+`;
+
+exports[`nested-flow-collections.yml 1`] = `
+---
+{
+ a: [
+  b, c, {
+   d: [e, f]
+  }
+ ]
+}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ a: [b, c, { d: [e, f] }] }
+
+`;
+
+exports[`nested-flow-collections-on-one-line.yml 1`] = `
+---
+{ a: [b, c, { d: [e, f] } ] }
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ a: [b, c, { d: [e, f] }] }
+
+`;
+
+exports[`node-anchor-and-tag-on-seperate-lines.yml 1`] = `
+key: &anchor
+ !!map
+  a: b
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+key: !!map &anchor
+  a: b
+
+`;
+
+exports[`node-and-mapping-key-anchors.yml 1`] = `
+---
+top1: &node1
+  &k1 key1: one
+top2: &node2 # comment
+  key2: two
+top3:
+  &k3 key3: three
+top4:
+  &node4
+  &k4 key4: four
+top5:
+  &node5
+  key5: five
+top6: &val6
+  six
+top7:
+  &val7 seven
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+top1: &node1
+  &k1 key1: one
+top2: &node2 # comment
+  key2: two
+top3:
+  &k3 key3: three
+top4: &node4
+  &k4 key4: four
+top5: &node5
+  key5: five
+top6: &val6 six
+top7: &val7 seven
+
+`;
+
+exports[`non-specific-tags-on-scalars.yml 1`] = `
+- plain
+- "double quoted"
+- 'single quoted'
+- >
+  block
+- plain again
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- plain
+- "double quoted"
+- "single quoted"
+- >
+  block
+- plain again
+
+`;
+
+exports[`plain-mapping-key-ending-with-colon.yml 1`] = `
+---
+key ends with two colons::: value
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+key ends with two colons::: value
+
+`;
+
+exports[`plain-scalar-looking-like-key-comment-anchor-and-tag.yml 1`] = `
+k:#foo
+ &a !t s
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+k:#foo &a !t s
+
+`;
+
+exports[`plain-scalar-with-backslashes.yml 1`] = `
+---
+plain\\value\\with\\backslashes
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+plain\\value\\with\\backslashes
+
+`;
+
+exports[`plain-url-in-flow-mapping.yml 1`] = `
+- { url: http://example.org }
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- { url: http://example.org }
+
+`;
+
+exports[`scalars-on-line.yml 1`] = `
+--- "quoted
+string"
+--- &node foo
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+"quoted
+string"
+...
+&node foo
+
+`;
+
+exports[`sequence-entry-that-looks-like-two-with-wrong-indentation.yml 1`] = `
+- single multiline
+ - sequence entry
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- single multiline - sequence entry
+
+`;
+
+exports[`sequence-indent.yml 1`] = `
+foo:
+- 42
+bar:
+  - 44
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+foo:
+  - 42
+bar:
+  - 44
+
+`;
+
+exports[`sequence-with-same-indentation-as-parent-mapping.yml 1`] = `
+1:
+- 2
+- 3
+4: 5
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+1:
+  - 2
+  - 3
+4: 5
+
+`;
+
+exports[`simple-mapping-indent.yml 1`] = `
+foo:
+  bar: baz
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+foo:
+  bar: baz
+
+`;
+
+exports[`single-entry-block-sequence.yml 1`] = `
+- foo
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- foo
+
+`;
+
+exports[`single-pair-block-mapping.yml 1`] = `
+foo: bar
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+foo: bar
+
+`;
+
+exports[`spec-example-2-1-sequence-of-scalars.yml 1`] = `
+- Mark McGwire
+- Sammy Sosa
+- Ken Griffey
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- Mark McGwire
+- Sammy Sosa
+- Ken Griffey
+
+`;
+
+exports[`spec-example-2-2-mapping-scalars-to-scalars.yml 1`] = `
+hr:  65    # Home runs
+avg: 0.278 # Batting average
+rbi: 147   # Runs Batted In
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+hr: 65 # Home runs
+avg: 0.278 # Batting average
+rbi: 147 # Runs Batted In
+
+`;
+
+exports[`spec-example-2-3-mapping-scalars-to-sequences.yml 1`] = `
+american:
+  - Boston Red Sox
+  - Detroit Tigers
+  - New York Yankees
+national:
+  - New York Mets
+  - Chicago Cubs
+  - Atlanta Braves
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+american:
+  - Boston Red Sox
+  - Detroit Tigers
+  - New York Yankees
+national:
+  - New York Mets
+  - Chicago Cubs
+  - Atlanta Braves
+
+`;
+
+exports[`spec-example-2-4-sequence-of-mappings.yml 1`] = `
+-
+  name: Mark McGwire
+  hr:   65
+  avg:  0.278
+-
+  name: Sammy Sosa
+  hr:   63
+  avg:  0.288
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- name: Mark McGwire
+  hr: 65
+  avg: 0.278
+- name: Sammy Sosa
+  hr: 63
+  avg: 0.288
+
+`;
+
+exports[`spec-example-2-5-sequence-of-sequences.yml 1`] = `
+- [name        , hr, avg  ]
+- [Mark McGwire, 65, 0.278]
+- [Sammy Sosa  , 63, 0.288]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- [name, hr, avg]
+- [Mark McGwire, 65, 0.278]
+- [Sammy Sosa, 63, 0.288]
+
+`;
+
+exports[`spec-example-2-6-mapping-of-mappings.yml 1`] = `
+Mark McGwire: {hr: 65, avg: 0.278}
+Sammy Sosa: {
+    hr: 63,
+    avg: 0.288
+  }
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Mark McGwire: { hr: 65, avg: 0.278 }
+Sammy Sosa: { hr: 63, avg: 0.288 }
+
+`;
+
+exports[`spec-example-2-7-two-documents-in-a-stream.yml 1`] = `
+# Ranking of 1998 home runs
+---
+- Mark McGwire
+- Sammy Sosa
+- Ken Griffey
+
+# Team ranking
+---
+- Chicago Cubs
+- St Louis Cardinals
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+# Ranking of 1998 home runs
+---
+- Mark McGwire
+- Sammy Sosa
+- Ken Griffey
+
+# Team ranking
+...
+- Chicago Cubs
+- St Louis Cardinals
+
+`;
+
+exports[`spec-example-2-8-play-by-play-feed-from-a-game.yml 1`] = `
+---
+time: 20:03:20
+player: Sammy Sosa
+action: strike (miss)
+...
+---
+time: 20:03:47
+player: Sammy Sosa
+action: grand slam
+...
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+time: 20:03:20
+player: Sammy Sosa
+action: strike (miss)
+...
+time: 20:03:47
+player: Sammy Sosa
+action: grand slam
+
+`;
+
+exports[`spec-example-2-9-single-document-with-two-comments.yml 1`] = `
+---
+hr: # 1998 hr ranking
+  - Mark McGwire
+  - Sammy Sosa
+rbi:
+  # 1998 rbi ranking
+  - Sammy Sosa
+  - Ken Griffey
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+hr: # 1998 hr ranking
+  - Mark McGwire
+  - Sammy Sosa
+rbi:
+  # 1998 rbi ranking
+  - Sammy Sosa
+  - Ken Griffey
+
+`;
+
+exports[`spec-example-2-10-node-for-sammy-sosa-appears-twice-in-this-document.yml 1`] = `
+---
+hr:
+  - Mark McGwire
+  # Following node labeled SS
+  - &SS Sammy Sosa
+rbi:
+  - *SS # Subsequent occurrence
+  - Ken Griffey
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+hr:
+  - Mark McGwire
+  # Following node labeled SS
+  - &SS Sammy Sosa
+rbi:
+  - *SS # Subsequent occurrence
+  - Ken Griffey
+
+`;
+
+exports[`spec-example-2-11-mapping-between-sequences.yml 1`] = `
+? - Detroit Tigers
+  - Chicago cubs
+:
+  - 2001-07-23
+
+? [ New York Yankees,
+    Atlanta Braves ]
+: [ 2001-07-02, 2001-08-12,
+    2001-08-14 ]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+? - Detroit Tigers
+  - Chicago cubs
+: - 2001-07-23
+
+[New York Yankees, Atlanta Braves]: [2001-07-02, 2001-08-12, 2001-08-14]
+
+`;
+
+exports[`spec-example-2-12-compact-nested-mapping.yml 1`] = `
+---
+# Products purchased
+- item    : Super Hoop
+  quantity: 1
+- item    : Basketball
+  quantity: 4
+- item    : Big Shoes
+  quantity: 1
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+# Products purchased
+- item: Super Hoop
+  quantity: 1
+- item: Basketball
+  quantity: 4
+- item: Big Shoes
+  quantity: 1
+
+`;
+
+exports[`spec-example-2-13-in-literals-newlines-are-preserved.yml 1`] = `
+# ASCII Art
+--- |
+  \\//||\\/||
+  // ||  ||__
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+# ASCII Art
+---
+|
+  \\//||\\/||
+  // ||  ||__
+
+`;
+
+exports[`spec-example-2-14-in-the-folded-scalars-newlines-become-spaces.yml 1`] = `
+--- >
+  Mark McGwire's
+  year was crippled
+  by a knee injury.
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+>
+  Mark McGwire's year was crippled by a knee injury.
+
+`;
+
+exports[`spec-example-2-15-folded-newlines-are-preserved-for-more-indented-and-blank-lines.yml 1`] = `
+>
+ Sammy Sosa completed another
+ fine season with great stats.
+
+   63 Home Runs
+   0.288 Batting Average
+
+ What a year!
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+>
+  Sammy Sosa completed another fine season with great stats.
+
+    63 Home Runs
+    0.288 Batting Average
+
+  What a year!
+
+`;
+
+exports[`spec-example-2-16-indentation-determines-scope.yml 1`] = `
+name: Mark McGwire
+accomplishment: >
+  Mark set a major league
+  home run record in 1998.
+stats: |
+  65 Home Runs
+  0.278 Batting Average
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+name: Mark McGwire
+accomplishment: >
+  Mark set a major league home run record in 1998.
+stats: |
+  65 Home Runs
+  0.278 Batting Average
+
+`;
+
+exports[`spec-example-2-17-quoted-scalars.yml 1`] = `
+unicode: "Sosa did fine.\\u263A"
+control: "\\b1998\\t1999\\t2000\\n"
+hex esc: "\\x0d\\x0a is \\r\\n"
+
+single: '"Howdy!" he cried.'
+quoted: ' # Not a ''comment''.'
+tie-fighter: '|\\-*-/|'
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+unicode: "Sosa did fine.\\u263A"
+control: "\\b1998\\t1999\\t2000\\n"
+hex esc: "\\x0d\\x0a is \\r\\n"
+
+single: '"Howdy!" he cried.'
+quoted: " # Not a 'comment'."
+tie-fighter: '|\\-*-/|'
+
+`;
+
+exports[`spec-example-2-18-multi-line-flow-scalars.yml 1`] = `
+plain:
+  This unquoted scalar
+  spans many lines.
+
+quoted: "So does this
+  quoted scalar.\\n"
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+plain: This unquoted scalar spans many lines.
+
+quoted: "So does this
+  quoted scalar.\\n"
+
+`;
+
+exports[`spec-example-2-23-various-explicit-tags.yml 1`] = `
+---
+not-date: !!str 2002-04-28
+
+picture: !!binary |
+ R0lGODlhDAAMAIQAAP//9/X
+ 17unp5WZmZgAAAOfn515eXv
+ Pz7Y6OjuDg4J+fn5OTk6enp
+ 56enmleECcgggoBADs=
+
+application specific tag: !something |
+ The semantics of the tag
+ above may be different for
+ different documents.
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+not-date: !!str 2002-04-28
+
+picture: !!binary |
+  R0lGODlhDAAMAIQAAP//9/X
+  17unp5WZmZgAAAOfn515eXv
+  Pz7Y6OjuDg4J+fn5OTk6enp
+  56enmleECcgggoBADs=
+
+application specific tag: !something |
+  The semantics of the tag
+  above may be different for
+  different documents.
+
+`;
+
+exports[`spec-example-2-24-global-tags.yml 1`] = `
+%TAG ! tag:clarkevans.com,2002:
+--- !shape
+  # Use the ! handle for presenting
+  # tag:clarkevans.com,2002:circle
+- !circle
+  center: &ORIGIN {x: 73, y: 129}
+  radius: 7
+- !line
+  start: *ORIGIN
+  finish: { x: 89, y: 102 }
+- !label
+  start: *ORIGIN
+  color: 0xFFEEBB
+  text: Pretty vector drawing.
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+%TAG ! tag:clarkevans.com,2002:
+---
+!shape
+# Use the ! handle for presenting
+# tag:clarkevans.com,2002:circle
+- !circle
+  center: &ORIGIN { x: 73, y: 129 }
+  radius: 7
+- !line
+  start: *ORIGIN
+  finish: { x: 89, y: 102 }
+- !label
+  start: *ORIGIN
+  color: 0xFFEEBB
+  text: Pretty vector drawing.
+
+`;
+
+exports[`spec-example-2-25-unordered-sets.yml 1`] = `
+# Sets are represented as a
+# Mapping where each key is
+# associated with a null value
+--- !!set
+? Mark McGwire
+? Sammy Sosa
+? Ken Griff
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+# Sets are represented as a
+# Mapping where each key is
+# associated with a null value
+---
+!!set
+? Mark McGwire
+? Sammy Sosa
+? Ken Griff
+
+`;
+
+exports[`spec-example-2-26-ordered-mappings.yml 1`] = `
+# Ordered maps are represented as
+# A sequence of mappings, with
+# each mapping having one key
+--- !!omap
+- Mark McGwire: 65
+- Sammy Sosa: 63
+- Ken Griffy: 58
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+# Ordered maps are represented as
+# A sequence of mappings, with
+# each mapping having one key
+---
+!!omap
+- Mark McGwire: 65
+- Sammy Sosa: 63
+- Ken Griffy: 58
+
+`;
+
+exports[`spec-example-2-27-invoice.yml 1`] = `
+--- !<tag:clarkevans.com,2002:invoice>
+invoice: 34843
+date   : 2001-01-23
+bill-to: &id001
+    given  : Chris
+    family : Dumars
+    address:
+        lines: |
+            458 Walkman Dr.
+            Suite #292
+        city    : Royal Oak
+        state   : MI
+        postal  : 48046
+ship-to: *id001
+product:
+    - sku         : BL394D
+      quantity    : 4
+      description : Basketball
+      price       : 450.00
+    - sku         : BL4438H
+      quantity    : 1
+      description : Super Hoop
+      price       : 2392.00
+tax  : 251.42
+total: 4443.52
+comments:
+    Late afternoon is best.
+    Backup contact is Nancy
+    Billsmer @ 338-4338.
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!<tag:clarkevans.com,2002:invoice>
+invoice: 34843
+date: 2001-01-23
+bill-to: &id001
+  given: Chris
+  family: Dumars
+  address:
+    lines: |
+      458 Walkman Dr.
+      Suite #292
+    city: Royal Oak
+    state: MI
+    postal: 48046
+ship-to: *id001
+product:
+  - sku: BL394D
+    quantity: 4
+    description: Basketball
+    price: 450.00
+  - sku: BL4438H
+    quantity: 1
+    description: Super Hoop
+    price: 2392.00
+tax: 251.42
+total: 4443.52
+comments: Late afternoon is best. Backup contact is Nancy Billsmer @ 338-4338.
+
+`;
+
+exports[`spec-example-2-28-log-file.yml 1`] = `
+---
+Time: 2001-11-23 15:01:42 -5
+User: ed
+Warning:
+  This is an error message
+  for the log file
+---
+Time: 2001-11-23 15:02:31 -5
+User: ed
+Warning:
+  A slightly different error
+  message.
+---
+Date: 2001-11-23 15:03:17 -5
+User: ed
+Fatal:
+  Unknown variable "bar"
+Stack:
+  - file: TopClass.py
+    line: 23
+    code: |
+      x = MoreObject("345\\n")
+  - file: MoreClass.py
+    line: 58
+    code: |-
+      foo = bar
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Time: 2001-11-23 15:01:42 -5
+User: ed
+Warning: This is an error message for the log file
+...
+Time: 2001-11-23 15:02:31 -5
+User: ed
+Warning: A slightly different error message.
+...
+Date: 2001-11-23 15:03:17 -5
+User: ed
+Fatal: Unknown variable "bar"
+Stack:
+  - file: TopClass.py
+    line: 23
+    code: |
+      x = MoreObject("345\\n")
+  - file: MoreClass.py
+    line: 58
+    code: |-
+      foo = bar
+
+`;
+
+exports[`spec-example-5-3-block-structure-indicators.yml 1`] = `
+sequence:
+- one
+- two
+mapping:
+  ? sky
+  : blue
+  sea : green
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+sequence:
+  - one
+  - two
+mapping:
+  sky: blue
+  sea: green
+
+`;
+
+exports[`spec-example-5-4-flow-collection-indicators.yml 1`] = `
+sequence: [ one, two, ]
+mapping: { sky: blue, sea: green }
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+sequence: [one, two]
+mapping: { sky: blue, sea: green }
+
+`;
+
+exports[`spec-example-5-5-comment-indicator.yml 1`] = `
+# Comment only.
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+# Comment only.
+
+`;
+
+exports[`spec-example-5-6-node-property-indicators.yml 1`] = `
+anchored: !local &anchor value
+alias: *anchor
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+anchored: !local &anchor value
+alias: *anchor
+
+`;
+
+exports[`spec-example-5-7-block-scalar-indicators.yml 1`] = `
+literal: |
+  some
+  text
+folded: >
+  some
+  text
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+literal: |
+  some
+  text
+folded: >
+  some text
+
+`;
+
+exports[`spec-example-5-8-quoted-scalar-indicators.yml 1`] = `
+single: 'text'
+double: "text"
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+single: "text"
+double: "text"
+
+`;
+
+exports[`spec-example-5-9-directive-indicator.yml 1`] = `
+%YAML 1.2
+--- text
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+%YAML 1.2
+---
+text
+
+`;
+
+exports[`spec-example-5-12-tabs-and-spaces.yml 1`] = `
+# Tabs and spaces
+quoted: "Quoted 	"
+block:	|
+  void main() {
+  	printf("Hello, world!\\n");
+  }
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+# Tabs and spaces
+quoted: "Quoted 	"
+block: |
+  void main() {
+  	printf("Hello, world!\\n");
+  }
+
+`;
+
+exports[`spec-example-6-1-indentation-spaces.yml 1`] = `
+  # Leading comment line spaces are
+   # neither content nor indentation.
+    
+Not indented:
+ By one space: |
+    By four
+      spaces
+ Flow style: [    # Leading spaces
+   By two,        # in flow style
+  Also by two,    # are neither
+  	Still by two   # content nor
+    ]             # indentation.
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+# Leading comment line spaces are
+# neither content nor indentation.
+
+Not indented:
+  By one space: |
+    By four
+      spaces
+  Flow style: # Leading spaces
+    [
+      By two, # in flow style
+      Also by two, # are neither
+      Still by two, # content nor
+    ] # indentation.
+
+`;
+
+exports[`spec-example-6-2-indentation-indicators.yml 1`] = `
+? a
+: -	b
+  -  -	c
+     - d
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a:
+  - b
+  - - c
+    - d
+
+`;
+
+exports[`spec-example-6-3-separation-spaces.yml 1`] = `
+- foo:	 bar
+- - baz
+  -	baz
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- foo: bar
+- - baz
+  - baz
+
+`;
+
+exports[`spec-example-6-4-line-prefixes.yml 1`] = `
+plain: text
+  lines
+quoted: "text
+  	lines"
+block: |
+  text
+   	lines
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+plain: text lines
+quoted: "text
+  	lines"
+block: |
+  text
+   	lines
+
+`;
+
+exports[`spec-example-6-5-empty-lines.yml 1`] = `
+Folding:
+  "Empty line
+   	
+  as a line feed"
+Chomping: |
+  Clipped empty lines
+ 
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Folding: "Empty line
+   	
+  as a line feed"
+Chomping: |
+  Clipped empty lines
+
+`;
+
+exports[`spec-example-6-6-line-folding.yml 1`] = `
+>-
+  trimmed
+  
+ 
+
+  as
+  space
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+>-
+  trimmed
+
+
+
+  as space
+
+`;
+
+exports[`spec-example-6-7-block-folding.yml 1`] = `
+>
+  foo 
+ 
+  	 bar
+
+  baz
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+>
+  foo 
+
+  	 bar
+
+  baz
+
+`;
+
+exports[`spec-example-6-8-flow-folding.yml 1`] = `
+"
+  foo 
+ 
+  	 bar
+
+  baz
+"
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+"
+  foo 
+ 
+  	 bar
+
+  baz
+"
+
+`;
+
+exports[`spec-example-6-9-separated-comment.yml 1`] = `
+key:    # Comment
+  value
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+key: # Comment
+  value
+
+`;
+
+exports[`spec-example-6-10-comment-lines.yml 1`] = `
+  # Comment
+   
+
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+# Comment
+
+`;
+
+exports[`spec-example-6-11-multi-line-comments.yml 1`] = `
+key:    # Comment
+        # lines
+  value
+
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+key: # Comment
+  # lines
+  value
+
+`;
+
+exports[`spec-example-6-12-separation-spaces.yml 1`] = `
+{ first: Sammy, last: Sosa }:
+# Statistics:
+  hr:  # Home runs
+     65
+  avg: # Average
+   0.278
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ first: Sammy, last: Sosa }:
+  # Statistics:
+  hr: # Home runs
+    65
+  avg: # Average
+    0.278
+
+`;
+
+exports[`spec-example-6-13-reserved-directives.yml 1`] = `
+%FOO  bar baz # Should be ignored
+              # with a warning.
+--- "foo"
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+%FOO bar baz # Should be ignored
+# with a warning.
+---
+"foo"
+
+`;
+
+exports[`spec-example-6-14-yaml-directive.yml 1`] = `
+%YAML 1.3 # Attempt parsing
+          # with a warning
+---
+"foo"
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+%YAML 1.3 # Attempt parsing
+# with a warning
+---
+"foo"
+
+`;
+
+exports[`spec-example-6-16-tag-directive.yml 1`] = `
+%TAG !yaml! tag:yaml.org,2002:
+---
+!yaml!str "foo"
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+%TAG !yaml! tag:yaml.org,2002:
+---
+!yaml!str "foo"
+
+`;
+
+exports[`spec-example-6-18-primary-tag-handle.yml 1`] = `
+# Private
+!foo "bar"
+...
+# Global
+%TAG ! tag:example.com,2000:app/
+---
+!foo "bar"
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+# Private
+!foo "bar"
+...
+# Global
+%TAG ! tag:example.com,2000:app/
+---
+!foo "bar"
+
+`;
+
+exports[`spec-example-6-19-secondary-tag-handle.yml 1`] = `
+%TAG !! tag:example.com,2000:app/
+---
+!!int 1 - 3 # Interval, not integer
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+%TAG !! tag:example.com,2000:app/
+---
+!!int 1 - 3 # Interval, not integer
+
+`;
+
+exports[`spec-example-6-20-tag-handles.yml 1`] = `
+%TAG !e! tag:example.com,2000:app/
+---
+!e!foo "bar"
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+%TAG !e! tag:example.com,2000:app/
+---
+!e!foo "bar"
+
+`;
+
+exports[`spec-example-6-21-local-tag-prefix.yml 1`] = `
+%TAG !m! !my-
+--- # Bulb here
+!m!light fluorescent
+...
+%TAG !m! !my-
+--- # Color here
+!m!light green
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+%TAG !m! !my-
+---
+# Bulb here
+!m!light fluorescent
+...
+%TAG !m! !my-
+---
+# Color here
+!m!light green
+
+`;
+
+exports[`spec-example-6-22-global-tag-prefix.yml 1`] = `
+%TAG !e! tag:example.com,2000:app/
+---
+- !e!foo "bar"
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+%TAG !e! tag:example.com,2000:app/
+---
+- !e!foo "bar"
+
+`;
+
+exports[`spec-example-6-23-node-properties.yml 1`] = `
+!!str &a1 "foo":
+  !!str bar
+&a2 baz : *a1
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!str &a1 "foo": !!str bar
+&a2 baz: *a1
+
+`;
+
+exports[`spec-example-6-24-verbatim-tags.yml 1`] = `
+!<tag:yaml.org,2002:str> foo :
+  !<!bar> baz
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!<tag:yaml.org,2002:str> foo: !<!bar> baz
+
+`;
+
+exports[`spec-example-6-26-tag-shorthands.yml 1`] = `
+%TAG !e! tag:example.com,2000:app/
+---
+- !local foo
+- !!str bar
+- !e!tag%21 baz
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+%TAG !e! tag:example.com,2000:app/
+---
+- !local foo
+- !!str bar
+- !e!tag%21 baz
+
+`;
+
+exports[`spec-example-6-28-non-specific-tags.yml 1`] = `
+# Assuming conventional resolution:
+- "12"
+- 12
+- ! 12
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+# Assuming conventional resolution:
+- "12"
+- 12
+- ! 12
+
+`;
+
+exports[`spec-example-6-29-node-anchors.yml 1`] = `
+First occurrence: &anchor Value
+Second occurrence: *anchor
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+First occurrence: &anchor Value
+Second occurrence: *anchor
+
+`;
+
+exports[`spec-example-7-1-alias-nodes.yml 1`] = `
+First occurrence: &anchor Foo
+Second occurrence: *anchor
+Override anchor: &anchor Bar
+Reuse anchor: *anchor
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+First occurrence: &anchor Foo
+Second occurrence: *anchor
+Override anchor: &anchor Bar
+Reuse anchor: *anchor
+
+`;
+
+exports[`spec-example-7-2-empty-content.yml 1`] = `
+{
+  foo : !!str,
+  !!str : bar,
+}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ foo: !!str , !!str : bar }
+
+`;
+
+exports[`spec-example-7-3-completely-empty-flow-nodes.yml 1`] = `
+{
+  ? foo :,
+  : bar,
+}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ foo, : bar }
+
+`;
+
+exports[`spec-example-7-4-double-quoted-implicit-keys.yml 1`] = `
+"implicit block key" : [
+  "implicit flow key" : value,
+ ]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+"implicit block key": ["implicit flow key": value]
+
+`;
+
+exports[`spec-example-7-5-double-quoted-line-breaks.yml 1`] = `
+"folded 
+to a space,	
+ 
+to a line feed, or 	\\
+ \\ 	non-content"
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+"folded 
+to a space,	
+ 
+to a line feed, or 	\\
+ \\ 	non-content"
+
+`;
+
+exports[`spec-example-7-6-double-quoted-lines.yml 1`] = `
+" 1st non-empty
+
+ 2nd non-empty 
+	3rd non-empty "
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+" 1st non-empty
+
+ 2nd non-empty 
+	3rd non-empty "
+
+`;
+
+exports[`spec-example-7-7-single-quoted-characters.yml 1`] = `
+'here''s to "quotes"'
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+'here''s to "quotes"'
+
+`;
+
+exports[`spec-example-7-8-single-quoted-implicit-keys.yml 1`] = `
+'implicit block key' : [
+  'implicit flow key' : value,
+ ]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+"implicit block key": ["implicit flow key": value]
+
+`;
+
+exports[`spec-example-7-9-single-quoted-lines.yml 1`] = `
+' 1st non-empty
+
+ 2nd non-empty 
+	3rd non-empty '
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+" 1st non-empty
+
+ 2nd non-empty 
+	3rd non-empty "
+
+`;
+
+exports[`spec-example-7-10-plain-characters.yml 1`] = `
+# Outside flow collection:
+- ::vector
+- ": - ()"
+- Up, up, and away!
+- -123
+- http://example.com/foo#bar
+# Inside flow collection:
+- [ ::vector,
+  ": - ()",
+  "Up, up and away!",
+  -123,
+  http://example.com/foo#bar ]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+# Outside flow collection:
+- ::vector
+- ": - ()"
+- Up, up, and away!
+- -123
+- http://example.com/foo#bar
+# Inside flow collection:
+- [::vector, ": - ()", "Up, up and away!", -123, http://example.com/foo#bar]
+
+`;
+
+exports[`spec-example-7-11-plain-implicit-keys.yml 1`] = `
+implicit block key : [
+  implicit flow key : value,
+ ]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+implicit block key: [implicit flow key: value]
+
+`;
+
+exports[`spec-example-7-12-plain-lines.yml 1`] = `
+1st non-empty
+
+ 2nd non-empty 
+	3rd non-empty
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+1st non-empty
+
+2nd non-empty 3rd non-empty
+
+`;
+
+exports[`spec-example-7-13-flow-sequence.yml 1`] = `
+- [ one, two, ]
+- [three ,four]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- [one, two]
+- [three, four]
+
+`;
+
+exports[`spec-example-7-14-flow-sequence-entries.yml 1`] = `
+[
+"double
+ quoted", 'single
+           quoted',
+plain
+ text, [ nested ],
+single: pair,
+]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+["double
+ quoted", "single
+           quoted", plain text, [nested], single: pair]
+
+`;
+
+exports[`spec-example-7-15-flow-mappings.yml 1`] = `
+- { one : two , three: four , }
+- {five: six,seven : eight}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- { one: two, three: four }
+- { five: six, seven: eight }
+
+`;
+
+exports[`spec-example-7-16-flow-mapping-entries.yml 1`] = `
+{
+? explicit: entry,
+implicit: entry,
+?
+}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ explicit: entry, implicit: entry, : }
+
+`;
+
+exports[`spec-example-7-17-flow-mapping-separate-values.yml 1`] = `
+{
+unquoted : "separate",
+http://foo.com,
+omitted value:,
+: omitted key,
+}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ unquoted: "separate", http://foo.com, omitted value, : omitted key }
+
+`;
+
+exports[`spec-example-7-18-flow-mapping-adjacent-values.yml 1`] = `
+{
+"adjacent":value,
+"readable": value,
+"empty":
+}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ "adjacent": value, "readable": value, "empty" }
+
+`;
+
+exports[`spec-example-7-19-single-pair-flow-mappings.yml 1`] = `
+[
+foo: bar
+]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[foo: bar]
+
+`;
+
+exports[`spec-example-7-20-single-pair-explicit-entry.yml 1`] = `
+[
+? foo
+ bar : baz
+]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[foo bar: baz]
+
+`;
+
+exports[`spec-example-7-21-single-pair-implicit-entries.yml 1`] = `
+- [ YAML : separate ]
+- [ : empty key entry ]
+- [ {JSON: like}:adjacent ]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- [YAML: separate]
+- [: empty key entry]
+- [{ JSON: like }: adjacent]
+
+`;
+
+exports[`spec-example-7-23-flow-content.yml 1`] = `
+- [ a, b ]
+- { a: b }
+- "a"
+- 'b'
+- c
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- [a, b]
+- { a: b }
+- "a"
+- "b"
+- c
+
+`;
+
+exports[`spec-example-7-24-flow-nodes.yml 1`] = `
+- !!str "a"
+- 'b'
+- &anchor "c"
+- *anchor
+- !!str
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- !!str "a"
+- "b"
+- &anchor "c"
+- *anchor
+- !!str
+
+`;
+
+exports[`spec-example-8-1-block-scalar-header.yml 1`] = `
+- | # Empty header↓
+ literal
+- >1 # Indentation indicator↓
+  folded
+- |+ # Chomping indicator↓
+ keep
+
+- >1- # Both indicators↓
+  strip
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- | # Empty header↓
+  literal
+- >1 # Indentation indicator↓
+  folded
+- |+ # Chomping indicator↓
+  keep
+
+- >1- # Both indicators↓
+  strip
+
+`;
+
+exports[`spec-example-8-2-block-indentation-indicator.yml 1`] = `
+- |
+ detected
+- >
+ 
+  
+  # detected
+- |1
+  explicit
+- >
+ 	
+ detected
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- |
+  detected
+- >
+
+
+  # detected
+- |1
+  explicit
+- >
+  	
+  detected
+
+`;
+
+exports[`spec-example-8-4-chomping-final-line-break.yml 1`] = `
+strip: |-
+  text
+clip: |
+  text
+keep: |+
+  text
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+strip: |-
+  text
+clip: |
+  text
+keep: |+
+  text
+
+`;
+
+exports[`spec-example-8-5-chomping-trailing-lines.yml 1`] = `
+ # Strip
+  # Comments:
+strip: |-
+  # text
+  
+ # Clip
+  # comments:
+
+clip: |
+  # text
+ 
+ # Keep
+  # comments:
+
+keep: |+
+  # text
+
+ # Trail
+  # comments.
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+# Strip
+# Comments:
+strip: |-
+  # text
+# Clip
+# comments:
+
+clip: |
+  # text
+# Keep
+# comments:
+
+keep: |+
+  # text
+
+# Trail
+# comments.
+
+`;
+
+exports[`spec-example-8-6-empty-scalar-chomping.yml 1`] = `
+strip: >-
+
+clip: >
+
+keep: |+
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+strip: >-
+clip: >
+keep: |+
+
+
+`;
+
+exports[`spec-example-8-7-literal-scalar.yml 1`] = `
+|
+ literal
+ 	text
+
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+|
+  literal
+  	text
+
+`;
+
+exports[`spec-example-8-8-literal-content.yml 1`] = `
+|
+ 
+  
+  literal
+   
+  
+  text
+
+ # Comment
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+|
+
+
+  literal
+   
+
+  text
+
+# Comment
+
+`;
+
+exports[`spec-example-8-9-folded-scalar.yml 1`] = `
+>
+ folded
+ text
+
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+>
+  folded text
+
+`;
+
+exports[`spec-example-8-10-folded-lines-8-13-final-empty-lines.yml 1`] = `
+>
+
+ folded
+ line
+
+ next
+ line
+   * bullet
+
+   * list
+   * lines
+
+ last
+ line
+
+# Comment
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+>
+
+  folded line
+
+  next line
+    * bullet
+
+    * list
+    * lines
+
+  last line
+
+# Comment
+
+`;
+
+exports[`spec-example-8-14-block-sequence.yml 1`] = `
+block sequence:
+  - one
+  - two : three
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+block sequence:
+  - one
+  - two: three
+
+`;
+
+exports[`spec-example-8-15-block-sequence-entry-types.yml 1`] = `
+- # Empty
+- |
+ block node
+- - one # Compact
+  - two # sequence
+- one: two # Compact mapping
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-  # Empty
+- |
+  block node
+- - one # Compact
+  - two # sequence
+- one: two # Compact mapping
+
+`;
+
+exports[`spec-example-8-16-block-mappings.yml 1`] = `
+block mapping:
+ key: value
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+block mapping:
+  key: value
+
+`;
+
+exports[`spec-example-8-17-explicit-block-mapping-entries.yml 1`] = `
+? explicit key # Empty value
+? |
+  block key
+: - one # Explicit compact
+  - two # block value
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+? explicit key # Empty value
+? |
+  block key
+: - one # Explicit compact
+  - two # block value
+
+`;
+
+exports[`spec-example-8-18-implicit-block-mapping-entries.yml 1`] = `
+plain key: in-line value
+: # Both empty
+"quoted key":
+- entry
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+plain key: in-line value
+: # Both empty
+"quoted key":
+  - entry
+
+`;
+
+exports[`spec-example-8-19-compact-block-mappings.yml 1`] = `
+- sun: yellow
+- ? earth: blue
+  : moon: white
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- sun: yellow
+- ? earth: blue
+  : moon: white
+
+`;
+
+exports[`spec-example-8-20-block-node-types.yml 1`] = `
+-
+  "flow in block"
+- >
+ Block scalar
+- !!map # Block collection
+  foo : bar
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- "flow in block"
+- >
+  Block scalar
+- !!map # Block collection
+  foo: bar
+
+`;
+
+exports[`spec-example-8-21-block-scalar-nodes.yml 1`] = `
+literal: |2
+  value
+folded:
+   !foo
+  >1
+ value
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+literal: |2
+  value
+folded: !foo >1
+ value
+
+`;
+
+exports[`spec-example-8-22-block-collection-nodes.yml 1`] = `
+sequence: !!seq
+- entry
+- !!seq
+ - nested
+mapping: !!map
+ foo: bar
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+sequence: !!seq
+  - entry
+  - !!seq
+    - nested
+mapping: !!map
+  foo: bar
+
+`;
+
+exports[`spec-example-9-2-document-markers.yml 1`] = `
+%YAML 1.2
+---
+Document
+... # Suffix
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+%YAML 1.2
+---
+Document
+... # Suffix
+
+`;
+
+exports[`spec-example-9-3-bare-documents.yml 1`] = `
+Bare
+document
+...
+# No document
+...
+|
+%!PS-Adobe-2.0 # Not the first line
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Bare document
+...
+# No document
+...
+|
+  %!PS-Adobe-2.0 # Not the first line
+
+`;
+
+exports[`spec-example-9-4-explicit-documents.yml 1`] = `
+---
+{ matches
+% : 20 }
+...
+---
+# Empty
+...
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{ matches %: 20 }
+...
+# Empty
+
+`;
+
+exports[`spec-example-9-5-directives-documents.yml 1`] = `
+%YAML 1.2
+--- |
+%!PS-Adobe-2.0
+...
+%YAML1.2
+---
+# Empty
+...
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+%YAML 1.2
+---
+|
+  %!PS-Adobe-2.0
+...
+%YAML1.2
+---
+# Empty
+
+`;
+
+exports[`spec-example-9-6-stream.yml 1`] = `
+Document
+---
+# Empty
+...
+%YAML 1.2
+---
+matches %: 20
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Document
+...
+# Empty
+...
+%YAML 1.2
+---
+matches %: 20
+
+`;
+
+exports[`tab-after-document-header.yml 1`] = `
+---	scalar
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+scalar
+
+`;
+
+exports[`tab-at-beginning-of-line-followed-by-a-flow-mapping.yml 1`] = `
+	{}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{}
+
+`;
+
+exports[`tags-for-block-objects.yml 1`] = `
+foo: !!seq
+  - !!str a
+  - !!map
+    key: !!str value
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+foo: !!seq
+  - !!str a
+  - !!map
+    key: !!str value
+
+`;
+
+exports[`tags-for-flow-objects.yml 1`] = `
+!!map {
+  k: !!seq
+  [ a, !!str b]
+}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!map { k: !!seq [a, !!str b] }
+
+`;
+
+exports[`tags-for-root-objects.yml 1`] = `
+--- !!map
+? a
+: b
+--- !!seq
+- !!str c
+--- !!str
+d
+e
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!map
+a: b
+...
+!!seq
+- !!str c
+...
+!!str d e
+
+`;
+
+exports[`tags-in-block-sequence.yml 1`] = `
+ - !!str a
+ - b
+ - !!int 42
+ - d
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- !!str a
+- b
+- !!int 42
+- d
+
+`;
+
+exports[`tags-in-explicit-mapping.yml 1`] = `
+? !!str a
+: !!int 47
+? c
+: !!str d
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!str a: !!int 47
+c: !!str d
+
+`;
+
+exports[`tags-in-implicit-mapping.yml 1`] = `
+!!str a: b
+c: !!int 42
+e: !!str f
+g: h
+!!int 23: !!bool false
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!str a: b
+c: !!int 42
+e: !!str f
+g: h
+!!int 23: !!bool false
+
+`;
+
+exports[`tags-on-empty-scalars.yml 1`] = `
+- !!str
+-
+  !!null : a
+  b: !!str
+- !!str : !!null
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- !!str
+- !!null : a
+  b: !!str
+- !!str : !!null
+
+`;
+
+exports[`three-dashes-and-content-without-space.yml 1`] = `
+---word1
+word2
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+---word1 word2
+
+`;
+
+exports[`various-combinations-of-tags-and-anchors.yml 1`] = `
+---
+&a1
+!!str
+scalar1
+---
+!!str
+&a2
+scalar2
+---
+&a3
+!!str scalar3
+---
+&a4 !!map
+&a5 !!str key5: value4
+---
+a6: 1
+&anchor6 b6: 2
+---
+!!map
+&a8 !!str key8: value7
+---
+!!map
+!!str &a10 key10: value9
+---
+!!str &a11
+value11
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!str &a1 scalar1
+...
+!!str &a2 scalar2
+...
+!!str &a3 scalar3
+...
+!!map &a4
+!!str &a5 key5: value4
+...
+a6: 1
+&anchor6 b6: 2
+...
+!!map
+!!str &a8 key8: value7
+...
+!!map
+!!str &a10 key10: value9
+...
+!!str &a11 value11
+
+`;
+
+exports[`various-location-of-anchors-in-flow-sequence.yml 1`] = `
+&flowseq [
+ a: b,
+ &c c: d,
+ { &e e: f },
+ &g { g: h }
+]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+&flowseq [a: b, &c c: d, { &e e: f }, &g { g: h }]
+
+`;
+
+exports[`various-trailing-comments.yml 1`] = `
+a: "double
+  quotes" # lala
+b: plain
+ value  # lala
+c  : #lala
+  d
+? # lala
+ - seq1
+: # lala
+ - #lala
+  seq2
+e:
+ &node # lala
+ - x: y
+block: > # lala
+  abcde
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: "double
+  quotes" # lala
+b: plain value # lala
+c: #lala
+  d
+? # lala
+  - seq1
+: # lala
+  - #lala
+    seq2
+e: &node # lala
+  - x: y
+block: > # lala
+  abcde
+
+`;
+
+exports[`various-trailing-tabs.yml 1`] = `
+a: b	
+seq:	
+ - a	
+c: d	#X
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+a: b
+seq:
+  - a
+c: d #X
+
+`;
+
+exports[`whitespace-after-scalars-in-flow.yml 1`] = `
+- [a, b , c ]
+- { "a"  : b
+   , c : 'd' ,
+   e   : "f"
+  }
+- [      ]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- [a, b, c]
+- { "a": b, c: "d", e: "f" }
+- []
+
+`;
+
+exports[`whitespace-around-colon-in-mappings.yml 1`] = `
+"top1" : 
+  "key1" : &alias1 scalar1
+'top2' : 
+  'key2' : &alias2 scalar2
+top3: &node3 
+  *alias1 : scalar3
+top4: 
+  *alias2 : scalar4
+top5   :    
+  scalar5
+top6: 
+  &anchor6 'key6' : scalar6
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+"top1":
+  "key1": &alias1 scalar1
+"top2":
+  "key2": &alias2 scalar2
+top3: &node3
+  *alias1 : scalar3
+top4:
+  *alias2 : scalar4
+top5: scalar5
+top6:
+  &anchor6 "key6": scalar6
+
+`;
+
+exports[`zero-indented-block-scalar.yml 1`] = `
+--- >
+line1
+line2
+line3
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+>
+  line1 line2 line3
+
+`;
+
+exports[`zero-indented-block-scalar-with-line-that-looks-like-a-comment.yml 1`] = `
+--- >
+line1
+# no comment
+line3
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+>
+  line1 # no comment line3
+
+`;
diff --git a/tests/yaml_spec/aliases-in-block-sequence.yml b/tests/yaml_spec/aliases-in-block-sequence.yml
new file mode 100644
index 000000000..b3c45b5c0
--- /dev/null
+++ b/tests/yaml_spec/aliases-in-block-sequence.yml
@@ -0,0 +1,4 @@
+- &a a
+- &b b
+- *a
+- *b
diff --git a/tests/yaml_spec/aliases-in-explicit-block-mapping.yml b/tests/yaml_spec/aliases-in-explicit-block-mapping.yml
new file mode 100644
index 000000000..b1490a679
--- /dev/null
+++ b/tests/yaml_spec/aliases-in-explicit-block-mapping.yml
@@ -0,0 +1,3 @@
+? &a a
+: &b b
+: *a
diff --git a/tests/yaml_spec/allowed-characters-in-alias.yml b/tests/yaml_spec/allowed-characters-in-alias.yml
new file mode 100644
index 000000000..43c7a1516
--- /dev/null
+++ b/tests/yaml_spec/allowed-characters-in-alias.yml
@@ -0,0 +1,2 @@
+a: &:@*!$"<foo>: scalar a
+b: *:@*!$"<foo>:
diff --git a/tests/yaml_spec/allowed-characters-in-keys.yml b/tests/yaml_spec/allowed-characters-in-keys.yml
new file mode 100644
index 000000000..3a5b0a3fb
--- /dev/null
+++ b/tests/yaml_spec/allowed-characters-in-keys.yml
@@ -0,0 +1,5 @@
+a!"#$%&'()*+,-./09:;<=>?@AZ[\]^_`az{|}~: safe
+?foo: safe question mark
+:foo: safe colon
+-foo: safe dash
+this is#not: a comment
diff --git a/tests/yaml_spec/allowed-characters-in-plain-scalars.yml b/tests/yaml_spec/allowed-characters-in-plain-scalars.yml
new file mode 100644
index 000000000..ed2516d57
--- /dev/null
+++ b/tests/yaml_spec/allowed-characters-in-plain-scalars.yml
@@ -0,0 +1,5 @@
+safe: a!"#$%&'()*+,-./09:;<=>?@AZ[\]^_`az{|}~
+     !"#$%&'()*+,-./09:;<=>?@AZ[\]^_`az{|}~
+safe question mark: ?foo
+safe colon: :foo
+safe dash: -foo
diff --git a/tests/yaml_spec/allowed-characters-in-quoted-mapping-key.yml b/tests/yaml_spec/allowed-characters-in-quoted-mapping-key.yml
new file mode 100644
index 000000000..5b8cd26e3
--- /dev/null
+++ b/tests/yaml_spec/allowed-characters-in-quoted-mapping-key.yml
@@ -0,0 +1,2 @@
+"foo\nbar:baz\tx \\$%^&*()x": 23
+'x\ny:z\tx $%^&*()x': 24
diff --git a/tests/yaml_spec/anchor-before-zero-indented-sequence.yml b/tests/yaml_spec/anchor-before-zero-indented-sequence.yml
new file mode 100644
index 000000000..6a8937a91
--- /dev/null
+++ b/tests/yaml_spec/anchor-before-zero-indented-sequence.yml
@@ -0,0 +1,5 @@
+---
+seq:
+ &anchor
+- a
+- b
diff --git a/tests/yaml_spec/anchor-with-unicode-character.yml b/tests/yaml_spec/anchor-with-unicode-character.yml
new file mode 100644
index 000000000..72c1c378f
--- /dev/null
+++ b/tests/yaml_spec/anchor-with-unicode-character.yml
@@ -0,0 +1,2 @@
+---
+- &😁 unicode anchor
diff --git a/tests/yaml_spec/anchors-and-tags.yml b/tests/yaml_spec/anchors-and-tags.yml
new file mode 100644
index 000000000..8574f9575
--- /dev/null
+++ b/tests/yaml_spec/anchors-and-tags.yml
@@ -0,0 +1,4 @@
+ - &a !!str a
+ - !!int 2
+ - !!int &c 4
+ - &d d
diff --git a/tests/yaml_spec/anchors-in-mapping.yml b/tests/yaml_spec/anchors-in-mapping.yml
new file mode 100644
index 000000000..64d718fdb
--- /dev/null
+++ b/tests/yaml_spec/anchors-in-mapping.yml
@@ -0,0 +1,2 @@
+&a a: b
+c: &d d
diff --git a/tests/yaml_spec/anchors-with-colon-in-name.yml b/tests/yaml_spec/anchors-with-colon-in-name.yml
new file mode 100644
index 000000000..243c466a7
--- /dev/null
+++ b/tests/yaml_spec/anchors-with-colon-in-name.yml
@@ -0,0 +1,3 @@
+&a: key: &a value
+foo:
+  *a:
diff --git a/tests/yaml_spec/backslashes-in-singlequotes.yml b/tests/yaml_spec/backslashes-in-singlequotes.yml
new file mode 100644
index 000000000..33424c030
--- /dev/null
+++ b/tests/yaml_spec/backslashes-in-singlequotes.yml
@@ -0,0 +1 @@
+'foo: bar\': baz'
diff --git a/tests/yaml_spec/bare-document-after-document-end-marker.yml b/tests/yaml_spec/bare-document-after-document-end-marker.yml
new file mode 100644
index 000000000..696494465
--- /dev/null
+++ b/tests/yaml_spec/bare-document-after-document-end-marker.yml
@@ -0,0 +1,4 @@
+---
+scalar1
+...
+key: value
diff --git a/tests/yaml_spec/blank-lines.yml b/tests/yaml_spec/blank-lines.yml
new file mode 100644
index 000000000..4987de226
--- /dev/null
+++ b/tests/yaml_spec/blank-lines.yml
@@ -0,0 +1,12 @@
+foo: 1
+
+bar: 2
+    
+text: |
+  a
+    
+  b
+
+  c
+ 
+  d
diff --git a/tests/yaml_spec/block-mapping-with-missing-values.yml b/tests/yaml_spec/block-mapping-with-missing-values.yml
new file mode 100644
index 000000000..e36dcc928
--- /dev/null
+++ b/tests/yaml_spec/block-mapping-with-missing-values.yml
@@ -0,0 +1,3 @@
+? a
+? b
+c:
diff --git a/tests/yaml_spec/block-mapping-with-multiline-scalars.yml b/tests/yaml_spec/block-mapping-with-multiline-scalars.yml
new file mode 100644
index 000000000..247a8cd5d
--- /dev/null
+++ b/tests/yaml_spec/block-mapping-with-multiline-scalars.yml
@@ -0,0 +1,6 @@
+? a
+  true
+: null
+  d
+? e
+  42
diff --git a/tests/yaml_spec/block-mappings-in-block-sequence.yml b/tests/yaml_spec/block-mappings-in-block-sequence.yml
new file mode 100644
index 000000000..30c49a332
--- /dev/null
+++ b/tests/yaml_spec/block-mappings-in-block-sequence.yml
@@ -0,0 +1,4 @@
+ - key: value
+   key2: value2
+ -
+   key3: value3
diff --git a/tests/yaml_spec/block-scalar-indicator-order.yml b/tests/yaml_spec/block-scalar-indicator-order.yml
new file mode 100644
index 000000000..3d603d18f
--- /dev/null
+++ b/tests/yaml_spec/block-scalar-indicator-order.yml
@@ -0,0 +1,4 @@
+- |2-
+  explicit indent and chomp
+- |-2
+  chomp and explicit indent
diff --git a/tests/yaml_spec/block-scalar-keep.yml b/tests/yaml_spec/block-scalar-keep.yml
new file mode 100644
index 000000000..1ff9bfa3c
--- /dev/null
+++ b/tests/yaml_spec/block-scalar-keep.yml
@@ -0,0 +1,5 @@
+--- |+
+ ab
+ 
+  
+...
diff --git a/tests/yaml_spec/block-scalar-strip.yml b/tests/yaml_spec/block-scalar-strip.yml
new file mode 100644
index 000000000..1056edd74
--- /dev/null
+++ b/tests/yaml_spec/block-scalar-strip.yml
@@ -0,0 +1,5 @@
+|-
+ ab
+ 
+ 
+...
diff --git a/tests/yaml_spec/block-scalar-with-spaces-only.yml b/tests/yaml_spec/block-scalar-with-spaces-only.yml
new file mode 100644
index 000000000..3574e0214
--- /dev/null
+++ b/tests/yaml_spec/block-scalar-with-spaces-only.yml
@@ -0,0 +1,5 @@
+empty block scalar: >
+ 
+  
+   
+ # comment
diff --git a/tests/yaml_spec/block-sequence-in-block-mapping.yml b/tests/yaml_spec/block-sequence-in-block-mapping.yml
new file mode 100644
index 000000000..6b937f800
--- /dev/null
+++ b/tests/yaml_spec/block-sequence-in-block-mapping.yml
@@ -0,0 +1,3 @@
+key:
+ - item1
+ - item2
diff --git a/tests/yaml_spec/block-sequence-in-block-sequence.yml b/tests/yaml_spec/block-sequence-in-block-sequence.yml
new file mode 100644
index 000000000..4738eb107
--- /dev/null
+++ b/tests/yaml_spec/block-sequence-in-block-sequence.yml
@@ -0,0 +1,3 @@
+- - s1_i1
+  - s1_i2
+- s2
diff --git a/tests/yaml_spec/block-submapping.yml b/tests/yaml_spec/block-submapping.yml
new file mode 100644
index 000000000..32d211420
--- /dev/null
+++ b/tests/yaml_spec/block-submapping.yml
@@ -0,0 +1,3 @@
+foo:
+  bar: 1
+baz: 2
diff --git a/tests/yaml_spec/colon-in-double-quoted-string.yml b/tests/yaml_spec/colon-in-double-quoted-string.yml
new file mode 100644
index 000000000..912727ef4
--- /dev/null
+++ b/tests/yaml_spec/colon-in-double-quoted-string.yml
@@ -0,0 +1 @@
+"foo: bar\": baz"
diff --git a/tests/yaml_spec/comment-in-flow-sequence-before-comma.yml b/tests/yaml_spec/comment-in-flow-sequence-before-comma.yml
new file mode 100644
index 000000000..312847e51
--- /dev/null
+++ b/tests/yaml_spec/comment-in-flow-sequence-before-comma.yml
@@ -0,0 +1,4 @@
+---
+[ word1
+# comment
+, word2]
diff --git a/tests/yaml_spec/construct-binary.yml b/tests/yaml_spec/construct-binary.yml
new file mode 100644
index 000000000..dcdb16f3b
--- /dev/null
+++ b/tests/yaml_spec/construct-binary.yml
@@ -0,0 +1,12 @@
+canonical: !!binary "\
+ R0lGODlhDAAMAIQAAP//9/X17unp5WZmZgAAAOfn515eXvPz7Y6OjuDg4J+fn5\
+ OTk6enp56enmlpaWNjY6Ojo4SEhP/++f/++f/++f/++f/++f/++f/++f/++f/+\
+ +f/++f/++f/++f/++f/++SH+Dk1hZGUgd2l0aCBHSU1QACwAAAAADAAMAAAFLC\
+ AgjoEwnuNAFOhpEMTRiggcz4BNJHrv/zCFcLiwMWYNG84BwwEeECcgggoBADs="
+generic: !!binary |
+ R0lGODlhDAAMAIQAAP//9/X17unp5WZmZgAAAOfn515eXvPz7Y6OjuDg4J+fn5
+ OTk6enp56enmlpaWNjY6Ojo4SEhP/++f/++f/++f/++f/++f/++f/++f/++f/+
+ +f/++f/++f/++f/++f/++SH+Dk1hZGUgd2l0aCBHSU1QACwAAAAADAAMAAAFLC
+ AgjoEwnuNAFOhpEMTRiggcz4BNJHrv/zCFcLiwMWYNG84BwwEeECcgggoBADs=
+description:
+ The binary value above is a tiny arrow encoded as a gif image.
diff --git a/tests/yaml_spec/document-start-on-last-line.yml b/tests/yaml_spec/document-start-on-last-line.yml
new file mode 100644
index 000000000..6e88f36f7
--- /dev/null
+++ b/tests/yaml_spec/document-start-on-last-line.yml
@@ -0,0 +1,3 @@
+---
+a: b
+---
diff --git a/tests/yaml_spec/document-with-footer.yml b/tests/yaml_spec/document-with-footer.yml
new file mode 100644
index 000000000..4fc70de56
--- /dev/null
+++ b/tests/yaml_spec/document-with-footer.yml
@@ -0,0 +1,2 @@
+aaa: bbb
+...
diff --git a/tests/yaml_spec/empty-lines-at-end-of-document.yml b/tests/yaml_spec/empty-lines-at-end-of-document.yml
new file mode 100644
index 000000000..df6563abd
--- /dev/null
+++ b/tests/yaml_spec/empty-lines-at-end-of-document.yml
@@ -0,0 +1,4 @@
+:
+
+
+
diff --git a/tests/yaml_spec/empty-lines-between-mapping-elements.yml b/tests/yaml_spec/empty-lines-between-mapping-elements.yml
new file mode 100644
index 000000000..21b320d57
--- /dev/null
+++ b/tests/yaml_spec/empty-lines-between-mapping-elements.yml
@@ -0,0 +1,4 @@
+1: 2
+
+
+3: 4
diff --git a/tests/yaml_spec/empty-stream.yml b/tests/yaml_spec/empty-stream.yml
new file mode 100644
index 000000000..e69de29bb
diff --git a/tests/yaml_spec/escaped-slash-in-double-quotes.yml b/tests/yaml_spec/escaped-slash-in-double-quotes.yml
new file mode 100644
index 000000000..e47bf7231
--- /dev/null
+++ b/tests/yaml_spec/escaped-slash-in-double-quotes.yml
@@ -0,0 +1 @@
+escaped slash: "a\/b"
diff --git a/tests/yaml_spec/explicit-non-specific-tag.yml b/tests/yaml_spec/explicit-non-specific-tag.yml
new file mode 100644
index 000000000..eae54f783
--- /dev/null
+++ b/tests/yaml_spec/explicit-non-specific-tag.yml
@@ -0,0 +1 @@
+! a
diff --git a/tests/yaml_spec/flow-mapping-in-block-sequence.yml b/tests/yaml_spec/flow-mapping-in-block-sequence.yml
new file mode 100644
index 000000000..9d8ba51ee
--- /dev/null
+++ b/tests/yaml_spec/flow-mapping-in-block-sequence.yml
@@ -0,0 +1 @@
+- {a: b}
diff --git a/tests/yaml_spec/flow-mapping.yml b/tests/yaml_spec/flow-mapping.yml
new file mode 100644
index 000000000..fc448be72
--- /dev/null
+++ b/tests/yaml_spec/flow-mapping.yml
@@ -0,0 +1 @@
+{foo: you, bar: far}
diff --git a/tests/yaml_spec/flow-sequence-in-block-mapping.yml b/tests/yaml_spec/flow-sequence-in-block-mapping.yml
new file mode 100644
index 000000000..8238fdf55
--- /dev/null
+++ b/tests/yaml_spec/flow-sequence-in-block-mapping.yml
@@ -0,0 +1 @@
+a: [b, c]
diff --git a/tests/yaml_spec/flow-sequence-in-flow-mapping.yml b/tests/yaml_spec/flow-sequence-in-flow-mapping.yml
new file mode 100644
index 000000000..e6e30e2a9
--- /dev/null
+++ b/tests/yaml_spec/flow-sequence-in-flow-mapping.yml
@@ -0,0 +1 @@
+{a: [b, c], [d, e]: f}
diff --git a/tests/yaml_spec/flow-sequence-in-flow-sequence.yml b/tests/yaml_spec/flow-sequence-in-flow-sequence.yml
new file mode 100644
index 000000000..5f76a2e4c
--- /dev/null
+++ b/tests/yaml_spec/flow-sequence-in-flow-sequence.yml
@@ -0,0 +1 @@
+[a, [b, c]]
diff --git a/tests/yaml_spec/flow-sequence.yml b/tests/yaml_spec/flow-sequence.yml
new file mode 100644
index 000000000..bf3415868
--- /dev/null
+++ b/tests/yaml_spec/flow-sequence.yml
@@ -0,0 +1 @@
+[foo, bar, 42]
diff --git a/tests/yaml_spec/folded-block-scalar.yml b/tests/yaml_spec/folded-block-scalar.yml
new file mode 100644
index 000000000..f63944e24
--- /dev/null
+++ b/tests/yaml_spec/folded-block-scalar.yml
@@ -0,0 +1,8 @@
+>
+ ab
+ cd
+ 
+ ef
+
+
+ gh
diff --git a/tests/yaml_spec/implicit-flow-mapping-key-on-one-line.yml b/tests/yaml_spec/implicit-flow-mapping-key-on-one-line.yml
new file mode 100644
index 000000000..b13c841c4
--- /dev/null
+++ b/tests/yaml_spec/implicit-flow-mapping-key-on-one-line.yml
@@ -0,0 +1 @@
+[flow]: block
diff --git a/tests/yaml_spec/jsfmt.spec.js b/tests/yaml_spec/jsfmt.spec.js
new file mode 100644
index 000000000..c7bdf4fc3
--- /dev/null
+++ b/tests/yaml_spec/jsfmt.spec.js
@@ -0,0 +1 @@
+run_spec(__dirname, ["yaml"], { useTabs: true });
diff --git a/tests/yaml_spec/key-with-anchor-after-missing-explicit-mapping-value.yml b/tests/yaml_spec/key-with-anchor-after-missing-explicit-mapping-value.yml
new file mode 100644
index 000000000..b6fca2a3c
--- /dev/null
+++ b/tests/yaml_spec/key-with-anchor-after-missing-explicit-mapping-value.yml
@@ -0,0 +1,4 @@
+---
+a: 1
+? b
+&anchor c: 3
diff --git a/tests/yaml_spec/literal-block-scalar.yml b/tests/yaml_spec/literal-block-scalar.yml
new file mode 100644
index 000000000..d472650e3
--- /dev/null
+++ b/tests/yaml_spec/literal-block-scalar.yml
@@ -0,0 +1,8 @@
+a: |
+ ab
+ 
+ cd
+ ef
+ 
+
+...
diff --git a/tests/yaml_spec/literal-unicode.yml b/tests/yaml_spec/literal-unicode.yml
new file mode 100644
index 000000000..3cf0d466d
--- /dev/null
+++ b/tests/yaml_spec/literal-unicode.yml
@@ -0,0 +1,2 @@
+---
+wanted: love ♥ and peace ☮
diff --git a/tests/yaml_spec/lookahead-test-cases.yml b/tests/yaml_spec/lookahead-test-cases.yml
new file mode 100644
index 000000000..c9219e952
--- /dev/null
+++ b/tests/yaml_spec/lookahead-test-cases.yml
@@ -0,0 +1,2 @@
+- bla"keks: foo
+- bla]keks: foo
diff --git a/tests/yaml_spec/mapping-key-and-flow-sequence-item-anchors.yml b/tests/yaml_spec/mapping-key-and-flow-sequence-item-anchors.yml
new file mode 100644
index 000000000..19d1e3ee3
--- /dev/null
+++ b/tests/yaml_spec/mapping-key-and-flow-sequence-item-anchors.yml
@@ -0,0 +1,3 @@
+---
+&mapping
+&key [ &item a, b, c ]: value
diff --git a/tests/yaml_spec/mapping-with-anchor-on-document-start-line.yml b/tests/yaml_spec/mapping-with-anchor-on-document-start-line.yml
new file mode 100644
index 000000000..9c0012073
--- /dev/null
+++ b/tests/yaml_spec/mapping-with-anchor-on-document-start-line.yml
@@ -0,0 +1 @@
+--- &anchor a: b
diff --git a/tests/yaml_spec/mixed-block-mapping-explicit-to-implicit.yml b/tests/yaml_spec/mixed-block-mapping-explicit-to-implicit.yml
new file mode 100644
index 000000000..a491d4ace
--- /dev/null
+++ b/tests/yaml_spec/mixed-block-mapping-explicit-to-implicit.yml
@@ -0,0 +1,3 @@
+? a
+: 13
+1.5: d
diff --git a/tests/yaml_spec/mixed-block-mapping-implicit-to-explicit.yml b/tests/yaml_spec/mixed-block-mapping-implicit-to-explicit.yml
new file mode 100644
index 000000000..403ca3630
--- /dev/null
+++ b/tests/yaml_spec/mixed-block-mapping-implicit-to-explicit.yml
@@ -0,0 +1,3 @@
+a: 4.2
+? 23
+: d
diff --git a/tests/yaml_spec/multi-level-mapping-indent.yml b/tests/yaml_spec/multi-level-mapping-indent.yml
new file mode 100644
index 000000000..25f0447c4
--- /dev/null
+++ b/tests/yaml_spec/multi-level-mapping-indent.yml
@@ -0,0 +1,6 @@
+a:
+  b:
+    c: d
+  e:
+    f: g
+h: i
diff --git a/tests/yaml_spec/multiline-plain-scalar-with-empty-line.yml b/tests/yaml_spec/multiline-plain-scalar-with-empty-line.yml
new file mode 100644
index 000000000..71600b85b
--- /dev/null
+++ b/tests/yaml_spec/multiline-plain-scalar-with-empty-line.yml
@@ -0,0 +1,5 @@
+---
+plain: a
+ b
+
+ c
diff --git a/tests/yaml_spec/multiline-scalar-at-top-level.yml b/tests/yaml_spec/multiline-scalar-at-top-level.yml
new file mode 100644
index 000000000..8a21b02a0
--- /dev/null
+++ b/tests/yaml_spec/multiline-scalar-at-top-level.yml
@@ -0,0 +1,6 @@
+a
+b  
+  c
+d
+
+e
diff --git a/tests/yaml_spec/multiline-scalar-in-mapping.yml b/tests/yaml_spec/multiline-scalar-in-mapping.yml
new file mode 100644
index 000000000..62fe04a38
--- /dev/null
+++ b/tests/yaml_spec/multiline-scalar-in-mapping.yml
@@ -0,0 +1,5 @@
+a: b
+ c
+d:
+ e
+  f
diff --git a/tests/yaml_spec/multiline-scalar-that-looks-like-a-yaml-directive.yml b/tests/yaml_spec/multiline-scalar-that-looks-like-a-yaml-directive.yml
new file mode 100644
index 000000000..dbe36b960
--- /dev/null
+++ b/tests/yaml_spec/multiline-scalar-that-looks-like-a-yaml-directive.yml
@@ -0,0 +1,3 @@
+---
+scalar
+%YAML 1.2
diff --git a/tests/yaml_spec/multiple-entry-block-sequence.yml b/tests/yaml_spec/multiple-entry-block-sequence.yml
new file mode 100644
index 000000000..5fae9f4f6
--- /dev/null
+++ b/tests/yaml_spec/multiple-entry-block-sequence.yml
@@ -0,0 +1,3 @@
+- foo
+- bar
+- 42
diff --git a/tests/yaml_spec/multiple-pair-block-mapping.yml b/tests/yaml_spec/multiple-pair-block-mapping.yml
new file mode 100644
index 000000000..a40b18e8b
--- /dev/null
+++ b/tests/yaml_spec/multiple-pair-block-mapping.yml
@@ -0,0 +1,3 @@
+foo: blue
+bar: arrr
+baz: jazz
diff --git a/tests/yaml_spec/nested-flow-collections-on-one-line.yml b/tests/yaml_spec/nested-flow-collections-on-one-line.yml
new file mode 100644
index 000000000..04e631bbb
--- /dev/null
+++ b/tests/yaml_spec/nested-flow-collections-on-one-line.yml
@@ -0,0 +1,2 @@
+---
+{ a: [b, c, { d: [e, f] } ] }
diff --git a/tests/yaml_spec/nested-flow-collections.yml b/tests/yaml_spec/nested-flow-collections.yml
new file mode 100644
index 000000000..d8f46c457
--- /dev/null
+++ b/tests/yaml_spec/nested-flow-collections.yml
@@ -0,0 +1,8 @@
+---
+{
+ a: [
+  b, c, {
+   d: [e, f]
+  }
+ ]
+}
diff --git a/tests/yaml_spec/node-anchor-and-tag-on-seperate-lines.yml b/tests/yaml_spec/node-anchor-and-tag-on-seperate-lines.yml
new file mode 100644
index 000000000..35d556dd1
--- /dev/null
+++ b/tests/yaml_spec/node-anchor-and-tag-on-seperate-lines.yml
@@ -0,0 +1,3 @@
+key: &anchor
+ !!map
+  a: b
diff --git a/tests/yaml_spec/node-and-mapping-key-anchors.yml b/tests/yaml_spec/node-and-mapping-key-anchors.yml
new file mode 100644
index 000000000..76660a8f5
--- /dev/null
+++ b/tests/yaml_spec/node-and-mapping-key-anchors.yml
@@ -0,0 +1,17 @@
+---
+top1: &node1
+  &k1 key1: one
+top2: &node2 # comment
+  key2: two
+top3:
+  &k3 key3: three
+top4:
+  &node4
+  &k4 key4: four
+top5:
+  &node5
+  key5: five
+top6: &val6
+  six
+top7:
+  &val7 seven
diff --git a/tests/yaml_spec/non-specific-tags-on-scalars.yml b/tests/yaml_spec/non-specific-tags-on-scalars.yml
new file mode 100644
index 000000000..81acc2166
--- /dev/null
+++ b/tests/yaml_spec/non-specific-tags-on-scalars.yml
@@ -0,0 +1,6 @@
+- plain
+- "double quoted"
+- 'single quoted'
+- >
+  block
+- plain again
diff --git a/tests/yaml_spec/plain-mapping-key-ending-with-colon.yml b/tests/yaml_spec/plain-mapping-key-ending-with-colon.yml
new file mode 100644
index 000000000..79d518dd7
--- /dev/null
+++ b/tests/yaml_spec/plain-mapping-key-ending-with-colon.yml
@@ -0,0 +1,2 @@
+---
+key ends with two colons::: value
diff --git a/tests/yaml_spec/plain-scalar-looking-like-key-comment-anchor-and-tag.yml b/tests/yaml_spec/plain-scalar-looking-like-key-comment-anchor-and-tag.yml
new file mode 100644
index 000000000..fa0ab6676
--- /dev/null
+++ b/tests/yaml_spec/plain-scalar-looking-like-key-comment-anchor-and-tag.yml
@@ -0,0 +1,2 @@
+k:#foo
+ &a !t s
diff --git a/tests/yaml_spec/plain-scalar-with-backslashes.yml b/tests/yaml_spec/plain-scalar-with-backslashes.yml
new file mode 100644
index 000000000..9a786b307
--- /dev/null
+++ b/tests/yaml_spec/plain-scalar-with-backslashes.yml
@@ -0,0 +1,2 @@
+---
+plain\value\with\backslashes
diff --git a/tests/yaml_spec/plain-url-in-flow-mapping.yml b/tests/yaml_spec/plain-url-in-flow-mapping.yml
new file mode 100644
index 000000000..fa95c05e2
--- /dev/null
+++ b/tests/yaml_spec/plain-url-in-flow-mapping.yml
@@ -0,0 +1 @@
+- { url: http://example.org }
diff --git a/tests/yaml_spec/scalars-on-line.yml b/tests/yaml_spec/scalars-on-line.yml
new file mode 100644
index 000000000..5cbbe234c
--- /dev/null
+++ b/tests/yaml_spec/scalars-on-line.yml
@@ -0,0 +1,3 @@
+--- "quoted
+string"
+--- &node foo
diff --git a/tests/yaml_spec/sequence-entry-that-looks-like-two-with-wrong-indentation.yml b/tests/yaml_spec/sequence-entry-that-looks-like-two-with-wrong-indentation.yml
new file mode 100644
index 000000000..abf6cecb9
--- /dev/null
+++ b/tests/yaml_spec/sequence-entry-that-looks-like-two-with-wrong-indentation.yml
@@ -0,0 +1,2 @@
+- single multiline
+ - sequence entry
diff --git a/tests/yaml_spec/sequence-indent.yml b/tests/yaml_spec/sequence-indent.yml
new file mode 100644
index 000000000..5896eef37
--- /dev/null
+++ b/tests/yaml_spec/sequence-indent.yml
@@ -0,0 +1,4 @@
+foo:
+- 42
+bar:
+  - 44
diff --git a/tests/yaml_spec/sequence-with-same-indentation-as-parent-mapping.yml b/tests/yaml_spec/sequence-with-same-indentation-as-parent-mapping.yml
new file mode 100644
index 000000000..d4983f92a
--- /dev/null
+++ b/tests/yaml_spec/sequence-with-same-indentation-as-parent-mapping.yml
@@ -0,0 +1,4 @@
+1:
+- 2
+- 3
+4: 5
diff --git a/tests/yaml_spec/simple-mapping-indent.yml b/tests/yaml_spec/simple-mapping-indent.yml
new file mode 100644
index 000000000..4ee8d9dbf
--- /dev/null
+++ b/tests/yaml_spec/simple-mapping-indent.yml
@@ -0,0 +1,2 @@
+foo:
+  bar: baz
diff --git a/tests/yaml_spec/single-entry-block-sequence.yml b/tests/yaml_spec/single-entry-block-sequence.yml
new file mode 100644
index 000000000..a4b65cdd2
--- /dev/null
+++ b/tests/yaml_spec/single-entry-block-sequence.yml
@@ -0,0 +1 @@
+- foo
diff --git a/tests/yaml_spec/single-pair-block-mapping.yml b/tests/yaml_spec/single-pair-block-mapping.yml
new file mode 100644
index 000000000..20e9ff3fe
--- /dev/null
+++ b/tests/yaml_spec/single-pair-block-mapping.yml
@@ -0,0 +1 @@
+foo: bar
diff --git a/tests/yaml_spec/spec-example-2-1-sequence-of-scalars.yml b/tests/yaml_spec/spec-example-2-1-sequence-of-scalars.yml
new file mode 100644
index 000000000..d12e67111
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-1-sequence-of-scalars.yml
@@ -0,0 +1,3 @@
+- Mark McGwire
+- Sammy Sosa
+- Ken Griffey
diff --git a/tests/yaml_spec/spec-example-2-10-node-for-sammy-sosa-appears-twice-in-this-document.yml b/tests/yaml_spec/spec-example-2-10-node-for-sammy-sosa-appears-twice-in-this-document.yml
new file mode 100644
index 000000000..61808f678
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-10-node-for-sammy-sosa-appears-twice-in-this-document.yml
@@ -0,0 +1,8 @@
+---
+hr:
+  - Mark McGwire
+  # Following node labeled SS
+  - &SS Sammy Sosa
+rbi:
+  - *SS # Subsequent occurrence
+  - Ken Griffey
diff --git a/tests/yaml_spec/spec-example-2-11-mapping-between-sequences.yml b/tests/yaml_spec/spec-example-2-11-mapping-between-sequences.yml
new file mode 100644
index 000000000..9123ce213
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-11-mapping-between-sequences.yml
@@ -0,0 +1,9 @@
+? - Detroit Tigers
+  - Chicago cubs
+:
+  - 2001-07-23
+
+? [ New York Yankees,
+    Atlanta Braves ]
+: [ 2001-07-02, 2001-08-12,
+    2001-08-14 ]
diff --git a/tests/yaml_spec/spec-example-2-12-compact-nested-mapping.yml b/tests/yaml_spec/spec-example-2-12-compact-nested-mapping.yml
new file mode 100644
index 000000000..63a8ed7e6
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-12-compact-nested-mapping.yml
@@ -0,0 +1,8 @@
+---
+# Products purchased
+- item    : Super Hoop
+  quantity: 1
+- item    : Basketball
+  quantity: 4
+- item    : Big Shoes
+  quantity: 1
diff --git a/tests/yaml_spec/spec-example-2-13-in-literals-newlines-are-preserved.yml b/tests/yaml_spec/spec-example-2-13-in-literals-newlines-are-preserved.yml
new file mode 100644
index 000000000..13fb65601
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-13-in-literals-newlines-are-preserved.yml
@@ -0,0 +1,4 @@
+# ASCII Art
+--- |
+  \//||\/||
+  // ||  ||__
diff --git a/tests/yaml_spec/spec-example-2-14-in-the-folded-scalars-newlines-become-spaces.yml b/tests/yaml_spec/spec-example-2-14-in-the-folded-scalars-newlines-become-spaces.yml
new file mode 100644
index 000000000..fb4ed4a3f
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-14-in-the-folded-scalars-newlines-become-spaces.yml
@@ -0,0 +1,4 @@
+--- >
+  Mark McGwire's
+  year was crippled
+  by a knee injury.
diff --git a/tests/yaml_spec/spec-example-2-15-folded-newlines-are-preserved-for-more-indented-and-blank-lines.yml b/tests/yaml_spec/spec-example-2-15-folded-newlines-are-preserved-for-more-indented-and-blank-lines.yml
new file mode 100644
index 000000000..80b89a6d9
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-15-folded-newlines-are-preserved-for-more-indented-and-blank-lines.yml
@@ -0,0 +1,8 @@
+>
+ Sammy Sosa completed another
+ fine season with great stats.
+
+   63 Home Runs
+   0.288 Batting Average
+
+ What a year!
diff --git a/tests/yaml_spec/spec-example-2-16-indentation-determines-scope.yml b/tests/yaml_spec/spec-example-2-16-indentation-determines-scope.yml
new file mode 100644
index 000000000..9f66d881c
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-16-indentation-determines-scope.yml
@@ -0,0 +1,7 @@
+name: Mark McGwire
+accomplishment: >
+  Mark set a major league
+  home run record in 1998.
+stats: |
+  65 Home Runs
+  0.278 Batting Average
diff --git a/tests/yaml_spec/spec-example-2-17-quoted-scalars.yml b/tests/yaml_spec/spec-example-2-17-quoted-scalars.yml
new file mode 100644
index 000000000..c5c2a1815
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-17-quoted-scalars.yml
@@ -0,0 +1,7 @@
+unicode: "Sosa did fine.\u263A"
+control: "\b1998\t1999\t2000\n"
+hex esc: "\x0d\x0a is \r\n"
+
+single: '"Howdy!" he cried.'
+quoted: ' # Not a ''comment''.'
+tie-fighter: '|\-*-/|'
diff --git a/tests/yaml_spec/spec-example-2-18-multi-line-flow-scalars.yml b/tests/yaml_spec/spec-example-2-18-multi-line-flow-scalars.yml
new file mode 100644
index 000000000..e0a8bfa99
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-18-multi-line-flow-scalars.yml
@@ -0,0 +1,6 @@
+plain:
+  This unquoted scalar
+  spans many lines.
+
+quoted: "So does this
+  quoted scalar.\n"
diff --git a/tests/yaml_spec/spec-example-2-2-mapping-scalars-to-scalars.yml b/tests/yaml_spec/spec-example-2-2-mapping-scalars-to-scalars.yml
new file mode 100644
index 000000000..7b7ec948d
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-2-mapping-scalars-to-scalars.yml
@@ -0,0 +1,3 @@
+hr:  65    # Home runs
+avg: 0.278 # Batting average
+rbi: 147   # Runs Batted In
diff --git a/tests/yaml_spec/spec-example-2-23-various-explicit-tags.yml b/tests/yaml_spec/spec-example-2-23-various-explicit-tags.yml
new file mode 100644
index 000000000..5dbd992d6
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-23-various-explicit-tags.yml
@@ -0,0 +1,13 @@
+---
+not-date: !!str 2002-04-28
+
+picture: !!binary |
+ R0lGODlhDAAMAIQAAP//9/X
+ 17unp5WZmZgAAAOfn515eXv
+ Pz7Y6OjuDg4J+fn5OTk6enp
+ 56enmleECcgggoBADs=
+
+application specific tag: !something |
+ The semantics of the tag
+ above may be different for
+ different documents.
diff --git a/tests/yaml_spec/spec-example-2-24-global-tags.yml b/tests/yaml_spec/spec-example-2-24-global-tags.yml
new file mode 100644
index 000000000..1180757d8
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-24-global-tags.yml
@@ -0,0 +1,14 @@
+%TAG ! tag:clarkevans.com,2002:
+--- !shape
+  # Use the ! handle for presenting
+  # tag:clarkevans.com,2002:circle
+- !circle
+  center: &ORIGIN {x: 73, y: 129}
+  radius: 7
+- !line
+  start: *ORIGIN
+  finish: { x: 89, y: 102 }
+- !label
+  start: *ORIGIN
+  color: 0xFFEEBB
+  text: Pretty vector drawing.
diff --git a/tests/yaml_spec/spec-example-2-25-unordered-sets.yml b/tests/yaml_spec/spec-example-2-25-unordered-sets.yml
new file mode 100644
index 000000000..cf4943a20
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-25-unordered-sets.yml
@@ -0,0 +1,7 @@
+# Sets are represented as a
+# Mapping where each key is
+# associated with a null value
+--- !!set
+? Mark McGwire
+? Sammy Sosa
+? Ken Griff
diff --git a/tests/yaml_spec/spec-example-2-26-ordered-mappings.yml b/tests/yaml_spec/spec-example-2-26-ordered-mappings.yml
new file mode 100644
index 000000000..a28a7ac07
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-26-ordered-mappings.yml
@@ -0,0 +1,7 @@
+# Ordered maps are represented as
+# A sequence of mappings, with
+# each mapping having one key
+--- !!omap
+- Mark McGwire: 65
+- Sammy Sosa: 63
+- Ken Griffy: 58
diff --git a/tests/yaml_spec/spec-example-2-27-invoice.yml b/tests/yaml_spec/spec-example-2-27-invoice.yml
new file mode 100644
index 000000000..4625739d7
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-27-invoice.yml
@@ -0,0 +1,29 @@
+--- !<tag:clarkevans.com,2002:invoice>
+invoice: 34843
+date   : 2001-01-23
+bill-to: &id001
+    given  : Chris
+    family : Dumars
+    address:
+        lines: |
+            458 Walkman Dr.
+            Suite #292
+        city    : Royal Oak
+        state   : MI
+        postal  : 48046
+ship-to: *id001
+product:
+    - sku         : BL394D
+      quantity    : 4
+      description : Basketball
+      price       : 450.00
+    - sku         : BL4438H
+      quantity    : 1
+      description : Super Hoop
+      price       : 2392.00
+tax  : 251.42
+total: 4443.52
+comments:
+    Late afternoon is best.
+    Backup contact is Nancy
+    Billsmer @ 338-4338.
diff --git a/tests/yaml_spec/spec-example-2-28-log-file.yml b/tests/yaml_spec/spec-example-2-28-log-file.yml
new file mode 100644
index 000000000..a5c8dc85d
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-28-log-file.yml
@@ -0,0 +1,26 @@
+---
+Time: 2001-11-23 15:01:42 -5
+User: ed
+Warning:
+  This is an error message
+  for the log file
+---
+Time: 2001-11-23 15:02:31 -5
+User: ed
+Warning:
+  A slightly different error
+  message.
+---
+Date: 2001-11-23 15:03:17 -5
+User: ed
+Fatal:
+  Unknown variable "bar"
+Stack:
+  - file: TopClass.py
+    line: 23
+    code: |
+      x = MoreObject("345\n")
+  - file: MoreClass.py
+    line: 58
+    code: |-
+      foo = bar
diff --git a/tests/yaml_spec/spec-example-2-3-mapping-scalars-to-sequences.yml b/tests/yaml_spec/spec-example-2-3-mapping-scalars-to-sequences.yml
new file mode 100644
index 000000000..656d628ec
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-3-mapping-scalars-to-sequences.yml
@@ -0,0 +1,8 @@
+american:
+  - Boston Red Sox
+  - Detroit Tigers
+  - New York Yankees
+national:
+  - New York Mets
+  - Chicago Cubs
+  - Atlanta Braves
diff --git a/tests/yaml_spec/spec-example-2-4-sequence-of-mappings.yml b/tests/yaml_spec/spec-example-2-4-sequence-of-mappings.yml
new file mode 100644
index 000000000..430f6b3db
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-4-sequence-of-mappings.yml
@@ -0,0 +1,8 @@
+-
+  name: Mark McGwire
+  hr:   65
+  avg:  0.278
+-
+  name: Sammy Sosa
+  hr:   63
+  avg:  0.288
diff --git a/tests/yaml_spec/spec-example-2-5-sequence-of-sequences.yml b/tests/yaml_spec/spec-example-2-5-sequence-of-sequences.yml
new file mode 100644
index 000000000..cdd777062
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-5-sequence-of-sequences.yml
@@ -0,0 +1,3 @@
+- [name        , hr, avg  ]
+- [Mark McGwire, 65, 0.278]
+- [Sammy Sosa  , 63, 0.288]
diff --git a/tests/yaml_spec/spec-example-2-6-mapping-of-mappings.yml b/tests/yaml_spec/spec-example-2-6-mapping-of-mappings.yml
new file mode 100644
index 000000000..7a957b23a
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-6-mapping-of-mappings.yml
@@ -0,0 +1,5 @@
+Mark McGwire: {hr: 65, avg: 0.278}
+Sammy Sosa: {
+    hr: 63,
+    avg: 0.288
+  }
diff --git a/tests/yaml_spec/spec-example-2-7-two-documents-in-a-stream.yml b/tests/yaml_spec/spec-example-2-7-two-documents-in-a-stream.yml
new file mode 100644
index 000000000..bc711d547
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-7-two-documents-in-a-stream.yml
@@ -0,0 +1,10 @@
+# Ranking of 1998 home runs
+---
+- Mark McGwire
+- Sammy Sosa
+- Ken Griffey
+
+# Team ranking
+---
+- Chicago Cubs
+- St Louis Cardinals
diff --git a/tests/yaml_spec/spec-example-2-8-play-by-play-feed-from-a-game.yml b/tests/yaml_spec/spec-example-2-8-play-by-play-feed-from-a-game.yml
new file mode 100644
index 000000000..05e102d8e
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-8-play-by-play-feed-from-a-game.yml
@@ -0,0 +1,10 @@
+---
+time: 20:03:20
+player: Sammy Sosa
+action: strike (miss)
+...
+---
+time: 20:03:47
+player: Sammy Sosa
+action: grand slam
+...
diff --git a/tests/yaml_spec/spec-example-2-9-single-document-with-two-comments.yml b/tests/yaml_spec/spec-example-2-9-single-document-with-two-comments.yml
new file mode 100644
index 000000000..e26418053
--- /dev/null
+++ b/tests/yaml_spec/spec-example-2-9-single-document-with-two-comments.yml
@@ -0,0 +1,8 @@
+---
+hr: # 1998 hr ranking
+  - Mark McGwire
+  - Sammy Sosa
+rbi:
+  # 1998 rbi ranking
+  - Sammy Sosa
+  - Ken Griffey
diff --git a/tests/yaml_spec/spec-example-5-12-tabs-and-spaces.yml b/tests/yaml_spec/spec-example-5-12-tabs-and-spaces.yml
new file mode 100644
index 000000000..af9a32170
--- /dev/null
+++ b/tests/yaml_spec/spec-example-5-12-tabs-and-spaces.yml
@@ -0,0 +1,6 @@
+# Tabs and spaces
+quoted: "Quoted 	"
+block:	|
+  void main() {
+  	printf("Hello, world!\n");
+  }
diff --git a/tests/yaml_spec/spec-example-5-3-block-structure-indicators.yml b/tests/yaml_spec/spec-example-5-3-block-structure-indicators.yml
new file mode 100644
index 000000000..608ea1992
--- /dev/null
+++ b/tests/yaml_spec/spec-example-5-3-block-structure-indicators.yml
@@ -0,0 +1,7 @@
+sequence:
+- one
+- two
+mapping:
+  ? sky
+  : blue
+  sea : green
diff --git a/tests/yaml_spec/spec-example-5-4-flow-collection-indicators.yml b/tests/yaml_spec/spec-example-5-4-flow-collection-indicators.yml
new file mode 100644
index 000000000..df3384775
--- /dev/null
+++ b/tests/yaml_spec/spec-example-5-4-flow-collection-indicators.yml
@@ -0,0 +1,2 @@
+sequence: [ one, two, ]
+mapping: { sky: blue, sea: green }
diff --git a/tests/yaml_spec/spec-example-5-5-comment-indicator.yml b/tests/yaml_spec/spec-example-5-5-comment-indicator.yml
new file mode 100644
index 000000000..62524c0d7
--- /dev/null
+++ b/tests/yaml_spec/spec-example-5-5-comment-indicator.yml
@@ -0,0 +1 @@
+# Comment only.
diff --git a/tests/yaml_spec/spec-example-5-6-node-property-indicators.yml b/tests/yaml_spec/spec-example-5-6-node-property-indicators.yml
new file mode 100644
index 000000000..7a1f9b309
--- /dev/null
+++ b/tests/yaml_spec/spec-example-5-6-node-property-indicators.yml
@@ -0,0 +1,2 @@
+anchored: !local &anchor value
+alias: *anchor
diff --git a/tests/yaml_spec/spec-example-5-7-block-scalar-indicators.yml b/tests/yaml_spec/spec-example-5-7-block-scalar-indicators.yml
new file mode 100644
index 000000000..934726cbf
--- /dev/null
+++ b/tests/yaml_spec/spec-example-5-7-block-scalar-indicators.yml
@@ -0,0 +1,6 @@
+literal: |
+  some
+  text
+folded: >
+  some
+  text
diff --git a/tests/yaml_spec/spec-example-5-8-quoted-scalar-indicators.yml b/tests/yaml_spec/spec-example-5-8-quoted-scalar-indicators.yml
new file mode 100644
index 000000000..04ebf691b
--- /dev/null
+++ b/tests/yaml_spec/spec-example-5-8-quoted-scalar-indicators.yml
@@ -0,0 +1,2 @@
+single: 'text'
+double: "text"
diff --git a/tests/yaml_spec/spec-example-5-9-directive-indicator.yml b/tests/yaml_spec/spec-example-5-9-directive-indicator.yml
new file mode 100644
index 000000000..62204de2f
--- /dev/null
+++ b/tests/yaml_spec/spec-example-5-9-directive-indicator.yml
@@ -0,0 +1,2 @@
+%YAML 1.2
+--- text
diff --git a/tests/yaml_spec/spec-example-6-1-indentation-spaces.yml b/tests/yaml_spec/spec-example-6-1-indentation-spaces.yml
new file mode 100644
index 000000000..b5496c114
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-1-indentation-spaces.yml
@@ -0,0 +1,12 @@
+  # Leading comment line spaces are
+   # neither content nor indentation.
+    
+Not indented:
+ By one space: |
+    By four
+      spaces
+ Flow style: [    # Leading spaces
+   By two,        # in flow style
+  Also by two,    # are neither
+  	Still by two   # content nor
+    ]             # indentation.
diff --git a/tests/yaml_spec/spec-example-6-10-comment-lines.yml b/tests/yaml_spec/spec-example-6-10-comment-lines.yml
new file mode 100644
index 000000000..e5f1a84f0
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-10-comment-lines.yml
@@ -0,0 +1,4 @@
+  # Comment
+   
+
+
diff --git a/tests/yaml_spec/spec-example-6-11-multi-line-comments.yml b/tests/yaml_spec/spec-example-6-11-multi-line-comments.yml
new file mode 100644
index 000000000..6776e8afc
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-11-multi-line-comments.yml
@@ -0,0 +1,5 @@
+key:    # Comment
+        # lines
+  value
+
+
diff --git a/tests/yaml_spec/spec-example-6-12-separation-spaces.yml b/tests/yaml_spec/spec-example-6-12-separation-spaces.yml
new file mode 100644
index 000000000..e1e111340
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-12-separation-spaces.yml
@@ -0,0 +1,6 @@
+{ first: Sammy, last: Sosa }:
+# Statistics:
+  hr:  # Home runs
+     65
+  avg: # Average
+   0.278
diff --git a/tests/yaml_spec/spec-example-6-13-reserved-directives.yml b/tests/yaml_spec/spec-example-6-13-reserved-directives.yml
new file mode 100644
index 000000000..cedbf2336
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-13-reserved-directives.yml
@@ -0,0 +1,3 @@
+%FOO  bar baz # Should be ignored
+              # with a warning.
+--- "foo"
diff --git a/tests/yaml_spec/spec-example-6-14-yaml-directive.yml b/tests/yaml_spec/spec-example-6-14-yaml-directive.yml
new file mode 100644
index 000000000..fb5521568
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-14-yaml-directive.yml
@@ -0,0 +1,4 @@
+%YAML 1.3 # Attempt parsing
+          # with a warning
+---
+"foo"
diff --git a/tests/yaml_spec/spec-example-6-16-tag-directive.yml b/tests/yaml_spec/spec-example-6-16-tag-directive.yml
new file mode 100644
index 000000000..50f5ab935
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-16-tag-directive.yml
@@ -0,0 +1,3 @@
+%TAG !yaml! tag:yaml.org,2002:
+---
+!yaml!str "foo"
diff --git a/tests/yaml_spec/spec-example-6-18-primary-tag-handle.yml b/tests/yaml_spec/spec-example-6-18-primary-tag-handle.yml
new file mode 100644
index 000000000..d79f04e4f
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-18-primary-tag-handle.yml
@@ -0,0 +1,7 @@
+# Private
+!foo "bar"
+...
+# Global
+%TAG ! tag:example.com,2000:app/
+---
+!foo "bar"
diff --git a/tests/yaml_spec/spec-example-6-19-secondary-tag-handle.yml b/tests/yaml_spec/spec-example-6-19-secondary-tag-handle.yml
new file mode 100644
index 000000000..7b9d9b10a
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-19-secondary-tag-handle.yml
@@ -0,0 +1,3 @@
+%TAG !! tag:example.com,2000:app/
+---
+!!int 1 - 3 # Interval, not integer
diff --git a/tests/yaml_spec/spec-example-6-2-indentation-indicators.yml b/tests/yaml_spec/spec-example-6-2-indentation-indicators.yml
new file mode 100644
index 000000000..ac0d970de
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-2-indentation-indicators.yml
@@ -0,0 +1,4 @@
+? a
+: -	b
+  -  -	c
+     - d
diff --git a/tests/yaml_spec/spec-example-6-20-tag-handles.yml b/tests/yaml_spec/spec-example-6-20-tag-handles.yml
new file mode 100644
index 000000000..690f138e0
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-20-tag-handles.yml
@@ -0,0 +1,3 @@
+%TAG !e! tag:example.com,2000:app/
+---
+!e!foo "bar"
diff --git a/tests/yaml_spec/spec-example-6-21-local-tag-prefix.yml b/tests/yaml_spec/spec-example-6-21-local-tag-prefix.yml
new file mode 100644
index 000000000..57315a5bb
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-21-local-tag-prefix.yml
@@ -0,0 +1,7 @@
+%TAG !m! !my-
+--- # Bulb here
+!m!light fluorescent
+...
+%TAG !m! !my-
+--- # Color here
+!m!light green
diff --git a/tests/yaml_spec/spec-example-6-22-global-tag-prefix.yml b/tests/yaml_spec/spec-example-6-22-global-tag-prefix.yml
new file mode 100644
index 000000000..eedfe04db
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-22-global-tag-prefix.yml
@@ -0,0 +1,3 @@
+%TAG !e! tag:example.com,2000:app/
+---
+- !e!foo "bar"
diff --git a/tests/yaml_spec/spec-example-6-23-node-properties.yml b/tests/yaml_spec/spec-example-6-23-node-properties.yml
new file mode 100644
index 000000000..66d75f365
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-23-node-properties.yml
@@ -0,0 +1,3 @@
+!!str &a1 "foo":
+  !!str bar
+&a2 baz : *a1
diff --git a/tests/yaml_spec/spec-example-6-24-verbatim-tags.yml b/tests/yaml_spec/spec-example-6-24-verbatim-tags.yml
new file mode 100644
index 000000000..8e51f52a0
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-24-verbatim-tags.yml
@@ -0,0 +1,2 @@
+!<tag:yaml.org,2002:str> foo :
+  !<!bar> baz
diff --git a/tests/yaml_spec/spec-example-6-26-tag-shorthands.yml b/tests/yaml_spec/spec-example-6-26-tag-shorthands.yml
new file mode 100644
index 000000000..70365f4ed
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-26-tag-shorthands.yml
@@ -0,0 +1,5 @@
+%TAG !e! tag:example.com,2000:app/
+---
+- !local foo
+- !!str bar
+- !e!tag%21 baz
diff --git a/tests/yaml_spec/spec-example-6-28-non-specific-tags.yml b/tests/yaml_spec/spec-example-6-28-non-specific-tags.yml
new file mode 100644
index 000000000..98aa565ea
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-28-non-specific-tags.yml
@@ -0,0 +1,4 @@
+# Assuming conventional resolution:
+- "12"
+- 12
+- ! 12
diff --git a/tests/yaml_spec/spec-example-6-29-node-anchors.yml b/tests/yaml_spec/spec-example-6-29-node-anchors.yml
new file mode 100644
index 000000000..600d1792f
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-29-node-anchors.yml
@@ -0,0 +1,2 @@
+First occurrence: &anchor Value
+Second occurrence: *anchor
diff --git a/tests/yaml_spec/spec-example-6-3-separation-spaces.yml b/tests/yaml_spec/spec-example-6-3-separation-spaces.yml
new file mode 100644
index 000000000..5f48cf497
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-3-separation-spaces.yml
@@ -0,0 +1,3 @@
+- foo:	 bar
+- - baz
+  -	baz
diff --git a/tests/yaml_spec/spec-example-6-4-line-prefixes.yml b/tests/yaml_spec/spec-example-6-4-line-prefixes.yml
new file mode 100644
index 000000000..2f62d0823
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-4-line-prefixes.yml
@@ -0,0 +1,7 @@
+plain: text
+  lines
+quoted: "text
+  	lines"
+block: |
+  text
+   	lines
diff --git a/tests/yaml_spec/spec-example-6-5-empty-lines.yml b/tests/yaml_spec/spec-example-6-5-empty-lines.yml
new file mode 100644
index 000000000..60958d5f5
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-5-empty-lines.yml
@@ -0,0 +1,8 @@
+Folding:
+  "Empty line
+   	
+  as a line feed"
+Chomping: |
+  Clipped empty lines
+ 
+
diff --git a/tests/yaml_spec/spec-example-6-6-line-folding.yml b/tests/yaml_spec/spec-example-6-6-line-folding.yml
new file mode 100644
index 000000000..1c5090d0d
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-6-line-folding.yml
@@ -0,0 +1,7 @@
+>-
+  trimmed
+  
+ 
+
+  as
+  space
diff --git a/tests/yaml_spec/spec-example-6-7-block-folding.yml b/tests/yaml_spec/spec-example-6-7-block-folding.yml
new file mode 100644
index 000000000..0896cc6f4
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-7-block-folding.yml
@@ -0,0 +1,6 @@
+>
+  foo 
+ 
+  	 bar
+
+  baz
diff --git a/tests/yaml_spec/spec-example-6-8-flow-folding.yml b/tests/yaml_spec/spec-example-6-8-flow-folding.yml
new file mode 100644
index 000000000..d6af812c9
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-8-flow-folding.yml
@@ -0,0 +1,7 @@
+"
+  foo 
+ 
+  	 bar
+
+  baz
+"
diff --git a/tests/yaml_spec/spec-example-6-9-separated-comment.yml b/tests/yaml_spec/spec-example-6-9-separated-comment.yml
new file mode 100644
index 000000000..9db091295
--- /dev/null
+++ b/tests/yaml_spec/spec-example-6-9-separated-comment.yml
@@ -0,0 +1,2 @@
+key:    # Comment
+  value
diff --git a/tests/yaml_spec/spec-example-7-1-alias-nodes.yml b/tests/yaml_spec/spec-example-7-1-alias-nodes.yml
new file mode 100644
index 000000000..388767607
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-1-alias-nodes.yml
@@ -0,0 +1,4 @@
+First occurrence: &anchor Foo
+Second occurrence: *anchor
+Override anchor: &anchor Bar
+Reuse anchor: *anchor
diff --git a/tests/yaml_spec/spec-example-7-10-plain-characters.yml b/tests/yaml_spec/spec-example-7-10-plain-characters.yml
new file mode 100644
index 000000000..7ed369fbf
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-10-plain-characters.yml
@@ -0,0 +1,12 @@
+# Outside flow collection:
+- ::vector
+- ": - ()"
+- Up, up, and away!
+- -123
+- http://example.com/foo#bar
+# Inside flow collection:
+- [ ::vector,
+  ": - ()",
+  "Up, up and away!",
+  -123,
+  http://example.com/foo#bar ]
diff --git a/tests/yaml_spec/spec-example-7-11-plain-implicit-keys.yml b/tests/yaml_spec/spec-example-7-11-plain-implicit-keys.yml
new file mode 100644
index 000000000..fd57f6588
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-11-plain-implicit-keys.yml
@@ -0,0 +1,3 @@
+implicit block key : [
+  implicit flow key : value,
+ ]
diff --git a/tests/yaml_spec/spec-example-7-12-plain-lines.yml b/tests/yaml_spec/spec-example-7-12-plain-lines.yml
new file mode 100644
index 000000000..0499250b9
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-12-plain-lines.yml
@@ -0,0 +1,4 @@
+1st non-empty
+
+ 2nd non-empty 
+	3rd non-empty
diff --git a/tests/yaml_spec/spec-example-7-13-flow-sequence.yml b/tests/yaml_spec/spec-example-7-13-flow-sequence.yml
new file mode 100644
index 000000000..cd774803c
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-13-flow-sequence.yml
@@ -0,0 +1,2 @@
+- [ one, two, ]
+- [three ,four]
diff --git a/tests/yaml_spec/spec-example-7-14-flow-sequence-entries.yml b/tests/yaml_spec/spec-example-7-14-flow-sequence-entries.yml
new file mode 100644
index 000000000..632711672
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-14-flow-sequence-entries.yml
@@ -0,0 +1,8 @@
+[
+"double
+ quoted", 'single
+           quoted',
+plain
+ text, [ nested ],
+single: pair,
+]
diff --git a/tests/yaml_spec/spec-example-7-15-flow-mappings.yml b/tests/yaml_spec/spec-example-7-15-flow-mappings.yml
new file mode 100644
index 000000000..07186437a
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-15-flow-mappings.yml
@@ -0,0 +1,2 @@
+- { one : two , three: four , }
+- {five: six,seven : eight}
diff --git a/tests/yaml_spec/spec-example-7-16-flow-mapping-entries.yml b/tests/yaml_spec/spec-example-7-16-flow-mapping-entries.yml
new file mode 100644
index 000000000..cb84a9953
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-16-flow-mapping-entries.yml
@@ -0,0 +1,5 @@
+{
+? explicit: entry,
+implicit: entry,
+?
+}
diff --git a/tests/yaml_spec/spec-example-7-17-flow-mapping-separate-values.yml b/tests/yaml_spec/spec-example-7-17-flow-mapping-separate-values.yml
new file mode 100644
index 000000000..3cc12967d
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-17-flow-mapping-separate-values.yml
@@ -0,0 +1,6 @@
+{
+unquoted : "separate",
+http://foo.com,
+omitted value:,
+: omitted key,
+}
diff --git a/tests/yaml_spec/spec-example-7-18-flow-mapping-adjacent-values.yml b/tests/yaml_spec/spec-example-7-18-flow-mapping-adjacent-values.yml
new file mode 100644
index 000000000..7fc069c46
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-18-flow-mapping-adjacent-values.yml
@@ -0,0 +1,5 @@
+{
+"adjacent":value,
+"readable": value,
+"empty":
+}
diff --git a/tests/yaml_spec/spec-example-7-19-single-pair-flow-mappings.yml b/tests/yaml_spec/spec-example-7-19-single-pair-flow-mappings.yml
new file mode 100644
index 000000000..77f3eb3e9
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-19-single-pair-flow-mappings.yml
@@ -0,0 +1,3 @@
+[
+foo: bar
+]
diff --git a/tests/yaml_spec/spec-example-7-2-empty-content.yml b/tests/yaml_spec/spec-example-7-2-empty-content.yml
new file mode 100644
index 000000000..aa861037e
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-2-empty-content.yml
@@ -0,0 +1,4 @@
+{
+  foo : !!str,
+  !!str : bar,
+}
diff --git a/tests/yaml_spec/spec-example-7-20-single-pair-explicit-entry.yml b/tests/yaml_spec/spec-example-7-20-single-pair-explicit-entry.yml
new file mode 100644
index 000000000..19dc4f580
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-20-single-pair-explicit-entry.yml
@@ -0,0 +1,4 @@
+[
+? foo
+ bar : baz
+]
diff --git a/tests/yaml_spec/spec-example-7-21-single-pair-implicit-entries.yml b/tests/yaml_spec/spec-example-7-21-single-pair-implicit-entries.yml
new file mode 100644
index 000000000..fdff3b56f
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-21-single-pair-implicit-entries.yml
@@ -0,0 +1,3 @@
+- [ YAML : separate ]
+- [ : empty key entry ]
+- [ {JSON: like}:adjacent ]
diff --git a/tests/yaml_spec/spec-example-7-23-flow-content.yml b/tests/yaml_spec/spec-example-7-23-flow-content.yml
new file mode 100644
index 000000000..f709dc846
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-23-flow-content.yml
@@ -0,0 +1,5 @@
+- [ a, b ]
+- { a: b }
+- "a"
+- 'b'
+- c
diff --git a/tests/yaml_spec/spec-example-7-24-flow-nodes.yml b/tests/yaml_spec/spec-example-7-24-flow-nodes.yml
new file mode 100644
index 000000000..db4007f3f
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-24-flow-nodes.yml
@@ -0,0 +1,5 @@
+- !!str "a"
+- 'b'
+- &anchor "c"
+- *anchor
+- !!str
diff --git a/tests/yaml_spec/spec-example-7-3-completely-empty-flow-nodes.yml b/tests/yaml_spec/spec-example-7-3-completely-empty-flow-nodes.yml
new file mode 100644
index 000000000..f46900d1e
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-3-completely-empty-flow-nodes.yml
@@ -0,0 +1,4 @@
+{
+  ? foo :,
+  : bar,
+}
diff --git a/tests/yaml_spec/spec-example-7-4-double-quoted-implicit-keys.yml b/tests/yaml_spec/spec-example-7-4-double-quoted-implicit-keys.yml
new file mode 100644
index 000000000..1b7a55076
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-4-double-quoted-implicit-keys.yml
@@ -0,0 +1,3 @@
+"implicit block key" : [
+  "implicit flow key" : value,
+ ]
diff --git a/tests/yaml_spec/spec-example-7-5-double-quoted-line-breaks.yml b/tests/yaml_spec/spec-example-7-5-double-quoted-line-breaks.yml
new file mode 100644
index 000000000..eda4b4921
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-5-double-quoted-line-breaks.yml
@@ -0,0 +1,5 @@
+"folded 
+to a space,	
+ 
+to a line feed, or 	\
+ \ 	non-content"
diff --git a/tests/yaml_spec/spec-example-7-6-double-quoted-lines.yml b/tests/yaml_spec/spec-example-7-6-double-quoted-lines.yml
new file mode 100644
index 000000000..3d8b76da9
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-6-double-quoted-lines.yml
@@ -0,0 +1,4 @@
+" 1st non-empty
+
+ 2nd non-empty 
+	3rd non-empty "
diff --git a/tests/yaml_spec/spec-example-7-7-single-quoted-characters.yml b/tests/yaml_spec/spec-example-7-7-single-quoted-characters.yml
new file mode 100644
index 000000000..3efcb9150
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-7-single-quoted-characters.yml
@@ -0,0 +1 @@
+'here''s to "quotes"'
diff --git a/tests/yaml_spec/spec-example-7-8-single-quoted-implicit-keys.yml b/tests/yaml_spec/spec-example-7-8-single-quoted-implicit-keys.yml
new file mode 100644
index 000000000..f1baf58c0
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-8-single-quoted-implicit-keys.yml
@@ -0,0 +1,3 @@
+'implicit block key' : [
+  'implicit flow key' : value,
+ ]
diff --git a/tests/yaml_spec/spec-example-7-9-single-quoted-lines.yml b/tests/yaml_spec/spec-example-7-9-single-quoted-lines.yml
new file mode 100644
index 000000000..6dd946e2c
--- /dev/null
+++ b/tests/yaml_spec/spec-example-7-9-single-quoted-lines.yml
@@ -0,0 +1,4 @@
+' 1st non-empty
+
+ 2nd non-empty 
+	3rd non-empty '
diff --git a/tests/yaml_spec/spec-example-8-1-block-scalar-header.yml b/tests/yaml_spec/spec-example-8-1-block-scalar-header.yml
new file mode 100644
index 000000000..1dbadca3e
--- /dev/null
+++ b/tests/yaml_spec/spec-example-8-1-block-scalar-header.yml
@@ -0,0 +1,9 @@
+- | # Empty header↓
+ literal
+- >1 # Indentation indicator↓
+  folded
+- |+ # Chomping indicator↓
+ keep
+
+- >1- # Both indicators↓
+  strip
diff --git a/tests/yaml_spec/spec-example-8-10-folded-lines-8-13-final-empty-lines.yml b/tests/yaml_spec/spec-example-8-10-folded-lines-8-13-final-empty-lines.yml
new file mode 100644
index 000000000..992dd76c2
--- /dev/null
+++ b/tests/yaml_spec/spec-example-8-10-folded-lines-8-13-final-empty-lines.yml
@@ -0,0 +1,16 @@
+>
+
+ folded
+ line
+
+ next
+ line
+   * bullet
+
+   * list
+   * lines
+
+ last
+ line
+
+# Comment
diff --git a/tests/yaml_spec/spec-example-8-14-block-sequence.yml b/tests/yaml_spec/spec-example-8-14-block-sequence.yml
new file mode 100644
index 000000000..d2f2ccfb2
--- /dev/null
+++ b/tests/yaml_spec/spec-example-8-14-block-sequence.yml
@@ -0,0 +1,3 @@
+block sequence:
+  - one
+  - two : three
diff --git a/tests/yaml_spec/spec-example-8-15-block-sequence-entry-types.yml b/tests/yaml_spec/spec-example-8-15-block-sequence-entry-types.yml
new file mode 100644
index 000000000..35ac92365
--- /dev/null
+++ b/tests/yaml_spec/spec-example-8-15-block-sequence-entry-types.yml
@@ -0,0 +1,6 @@
+- # Empty
+- |
+ block node
+- - one # Compact
+  - two # sequence
+- one: two # Compact mapping
diff --git a/tests/yaml_spec/spec-example-8-16-block-mappings.yml b/tests/yaml_spec/spec-example-8-16-block-mappings.yml
new file mode 100644
index 000000000..2ef9084ac
--- /dev/null
+++ b/tests/yaml_spec/spec-example-8-16-block-mappings.yml
@@ -0,0 +1,2 @@
+block mapping:
+ key: value
diff --git a/tests/yaml_spec/spec-example-8-17-explicit-block-mapping-entries.yml b/tests/yaml_spec/spec-example-8-17-explicit-block-mapping-entries.yml
new file mode 100644
index 000000000..cb0cfd06d
--- /dev/null
+++ b/tests/yaml_spec/spec-example-8-17-explicit-block-mapping-entries.yml
@@ -0,0 +1,5 @@
+? explicit key # Empty value
+? |
+  block key
+: - one # Explicit compact
+  - two # block value
diff --git a/tests/yaml_spec/spec-example-8-18-implicit-block-mapping-entries.yml b/tests/yaml_spec/spec-example-8-18-implicit-block-mapping-entries.yml
new file mode 100644
index 000000000..c81951228
--- /dev/null
+++ b/tests/yaml_spec/spec-example-8-18-implicit-block-mapping-entries.yml
@@ -0,0 +1,4 @@
+plain key: in-line value
+: # Both empty
+"quoted key":
+- entry
diff --git a/tests/yaml_spec/spec-example-8-19-compact-block-mappings.yml b/tests/yaml_spec/spec-example-8-19-compact-block-mappings.yml
new file mode 100644
index 000000000..d675cfd6b
--- /dev/null
+++ b/tests/yaml_spec/spec-example-8-19-compact-block-mappings.yml
@@ -0,0 +1,3 @@
+- sun: yellow
+- ? earth: blue
+  : moon: white
diff --git a/tests/yaml_spec/spec-example-8-2-block-indentation-indicator.yml b/tests/yaml_spec/spec-example-8-2-block-indentation-indicator.yml
new file mode 100644
index 000000000..39bee044b
--- /dev/null
+++ b/tests/yaml_spec/spec-example-8-2-block-indentation-indicator.yml
@@ -0,0 +1,11 @@
+- |
+ detected
+- >
+ 
+  
+  # detected
+- |1
+  explicit
+- >
+ 	
+ detected
diff --git a/tests/yaml_spec/spec-example-8-20-block-node-types.yml b/tests/yaml_spec/spec-example-8-20-block-node-types.yml
new file mode 100644
index 000000000..a3f13ae6e
--- /dev/null
+++ b/tests/yaml_spec/spec-example-8-20-block-node-types.yml
@@ -0,0 +1,6 @@
+-
+  "flow in block"
+- >
+ Block scalar
+- !!map # Block collection
+  foo : bar
diff --git a/tests/yaml_spec/spec-example-8-21-block-scalar-nodes.yml b/tests/yaml_spec/spec-example-8-21-block-scalar-nodes.yml
new file mode 100644
index 000000000..f86be74ad
--- /dev/null
+++ b/tests/yaml_spec/spec-example-8-21-block-scalar-nodes.yml
@@ -0,0 +1,6 @@
+literal: |2
+  value
+folded:
+   !foo
+  >1
+ value
diff --git a/tests/yaml_spec/spec-example-8-22-block-collection-nodes.yml b/tests/yaml_spec/spec-example-8-22-block-collection-nodes.yml
new file mode 100644
index 000000000..5c5966992
--- /dev/null
+++ b/tests/yaml_spec/spec-example-8-22-block-collection-nodes.yml
@@ -0,0 +1,6 @@
+sequence: !!seq
+- entry
+- !!seq
+ - nested
+mapping: !!map
+ foo: bar
diff --git a/tests/yaml_spec/spec-example-8-4-chomping-final-line-break.yml b/tests/yaml_spec/spec-example-8-4-chomping-final-line-break.yml
new file mode 100644
index 000000000..fa6190fd5
--- /dev/null
+++ b/tests/yaml_spec/spec-example-8-4-chomping-final-line-break.yml
@@ -0,0 +1,6 @@
+strip: |-
+  text
+clip: |
+  text
+keep: |+
+  text
diff --git a/tests/yaml_spec/spec-example-8-5-chomping-trailing-lines.yml b/tests/yaml_spec/spec-example-8-5-chomping-trailing-lines.yml
new file mode 100644
index 000000000..32fa08f0a
--- /dev/null
+++ b/tests/yaml_spec/spec-example-8-5-chomping-trailing-lines.yml
@@ -0,0 +1,19 @@
+ # Strip
+  # Comments:
+strip: |-
+  # text
+  
+ # Clip
+  # comments:
+
+clip: |
+  # text
+ 
+ # Keep
+  # comments:
+
+keep: |+
+  # text
+
+ # Trail
+  # comments.
diff --git a/tests/yaml_spec/spec-example-8-6-empty-scalar-chomping.yml b/tests/yaml_spec/spec-example-8-6-empty-scalar-chomping.yml
new file mode 100644
index 000000000..de0b64bbe
--- /dev/null
+++ b/tests/yaml_spec/spec-example-8-6-empty-scalar-chomping.yml
@@ -0,0 +1,6 @@
+strip: >-
+
+clip: >
+
+keep: |+
+
diff --git a/tests/yaml_spec/spec-example-8-7-literal-scalar.yml b/tests/yaml_spec/spec-example-8-7-literal-scalar.yml
new file mode 100644
index 000000000..31f9966a0
--- /dev/null
+++ b/tests/yaml_spec/spec-example-8-7-literal-scalar.yml
@@ -0,0 +1,5 @@
+|
+ literal
+ 	text
+
+
diff --git a/tests/yaml_spec/spec-example-8-8-literal-content.yml b/tests/yaml_spec/spec-example-8-8-literal-content.yml
new file mode 100644
index 000000000..9d537cb51
--- /dev/null
+++ b/tests/yaml_spec/spec-example-8-8-literal-content.yml
@@ -0,0 +1,9 @@
+|
+ 
+  
+  literal
+   
+  
+  text
+
+ # Comment
diff --git a/tests/yaml_spec/spec-example-8-9-folded-scalar.yml b/tests/yaml_spec/spec-example-8-9-folded-scalar.yml
new file mode 100644
index 000000000..078fbc89b
--- /dev/null
+++ b/tests/yaml_spec/spec-example-8-9-folded-scalar.yml
@@ -0,0 +1,5 @@
+>
+ folded
+ text
+
+
diff --git a/tests/yaml_spec/spec-example-9-2-document-markers.yml b/tests/yaml_spec/spec-example-9-2-document-markers.yml
new file mode 100644
index 000000000..886e57446
--- /dev/null
+++ b/tests/yaml_spec/spec-example-9-2-document-markers.yml
@@ -0,0 +1,4 @@
+%YAML 1.2
+---
+Document
+... # Suffix
diff --git a/tests/yaml_spec/spec-example-9-3-bare-documents.yml b/tests/yaml_spec/spec-example-9-3-bare-documents.yml
new file mode 100644
index 000000000..57423e908
--- /dev/null
+++ b/tests/yaml_spec/spec-example-9-3-bare-documents.yml
@@ -0,0 +1,7 @@
+Bare
+document
+...
+# No document
+...
+|
+%!PS-Adobe-2.0 # Not the first line
diff --git a/tests/yaml_spec/spec-example-9-4-explicit-documents.yml b/tests/yaml_spec/spec-example-9-4-explicit-documents.yml
new file mode 100644
index 000000000..bc363b1c1
--- /dev/null
+++ b/tests/yaml_spec/spec-example-9-4-explicit-documents.yml
@@ -0,0 +1,7 @@
+---
+{ matches
+% : 20 }
+...
+---
+# Empty
+...
diff --git a/tests/yaml_spec/spec-example-9-5-directives-documents.yml b/tests/yaml_spec/spec-example-9-5-directives-documents.yml
new file mode 100644
index 000000000..de2463db9
--- /dev/null
+++ b/tests/yaml_spec/spec-example-9-5-directives-documents.yml
@@ -0,0 +1,8 @@
+%YAML 1.2
+--- |
+%!PS-Adobe-2.0
+...
+%YAML1.2
+---
+# Empty
+...
diff --git a/tests/yaml_spec/spec-example-9-6-stream.yml b/tests/yaml_spec/spec-example-9-6-stream.yml
new file mode 100644
index 000000000..52bd345d6
--- /dev/null
+++ b/tests/yaml_spec/spec-example-9-6-stream.yml
@@ -0,0 +1,7 @@
+Document
+---
+# Empty
+...
+%YAML 1.2
+---
+matches %: 20
diff --git a/tests/yaml_spec/tab-after-document-header.yml b/tests/yaml_spec/tab-after-document-header.yml
new file mode 100644
index 000000000..8171dccea
--- /dev/null
+++ b/tests/yaml_spec/tab-after-document-header.yml
@@ -0,0 +1 @@
+---	scalar
diff --git a/tests/yaml_spec/tab-at-beginning-of-line-followed-by-a-flow-mapping.yml b/tests/yaml_spec/tab-at-beginning-of-line-followed-by-a-flow-mapping.yml
new file mode 100644
index 000000000..db07de097
--- /dev/null
+++ b/tests/yaml_spec/tab-at-beginning-of-line-followed-by-a-flow-mapping.yml
@@ -0,0 +1 @@
+	{}
diff --git a/tests/yaml_spec/tags-for-block-objects.yml b/tests/yaml_spec/tags-for-block-objects.yml
new file mode 100644
index 000000000..7a3e8f1a3
--- /dev/null
+++ b/tests/yaml_spec/tags-for-block-objects.yml
@@ -0,0 +1,4 @@
+foo: !!seq
+  - !!str a
+  - !!map
+    key: !!str value
diff --git a/tests/yaml_spec/tags-for-flow-objects.yml b/tests/yaml_spec/tags-for-flow-objects.yml
new file mode 100644
index 000000000..f69ccded7
--- /dev/null
+++ b/tests/yaml_spec/tags-for-flow-objects.yml
@@ -0,0 +1,4 @@
+!!map {
+  k: !!seq
+  [ a, !!str b]
+}
diff --git a/tests/yaml_spec/tags-for-root-objects.yml b/tests/yaml_spec/tags-for-root-objects.yml
new file mode 100644
index 000000000..f0d91aa4f
--- /dev/null
+++ b/tests/yaml_spec/tags-for-root-objects.yml
@@ -0,0 +1,8 @@
+--- !!map
+? a
+: b
+--- !!seq
+- !!str c
+--- !!str
+d
+e
diff --git a/tests/yaml_spec/tags-in-block-sequence.yml b/tests/yaml_spec/tags-in-block-sequence.yml
new file mode 100644
index 000000000..51529617f
--- /dev/null
+++ b/tests/yaml_spec/tags-in-block-sequence.yml
@@ -0,0 +1,4 @@
+ - !!str a
+ - b
+ - !!int 42
+ - d
diff --git a/tests/yaml_spec/tags-in-explicit-mapping.yml b/tests/yaml_spec/tags-in-explicit-mapping.yml
new file mode 100644
index 000000000..c5e6ceb7e
--- /dev/null
+++ b/tests/yaml_spec/tags-in-explicit-mapping.yml
@@ -0,0 +1,4 @@
+? !!str a
+: !!int 47
+? c
+: !!str d
diff --git a/tests/yaml_spec/tags-in-implicit-mapping.yml b/tests/yaml_spec/tags-in-implicit-mapping.yml
new file mode 100644
index 000000000..e07dceb1d
--- /dev/null
+++ b/tests/yaml_spec/tags-in-implicit-mapping.yml
@@ -0,0 +1,5 @@
+!!str a: b
+c: !!int 42
+e: !!str f
+g: h
+!!int 23: !!bool false
diff --git a/tests/yaml_spec/tags-on-empty-scalars.yml b/tests/yaml_spec/tags-on-empty-scalars.yml
new file mode 100644
index 000000000..2b07b28b3
--- /dev/null
+++ b/tests/yaml_spec/tags-on-empty-scalars.yml
@@ -0,0 +1,5 @@
+- !!str
+-
+  !!null : a
+  b: !!str
+- !!str : !!null
diff --git a/tests/yaml_spec/three-dashes-and-content-without-space.yml b/tests/yaml_spec/three-dashes-and-content-without-space.yml
new file mode 100644
index 000000000..fffaf580e
--- /dev/null
+++ b/tests/yaml_spec/three-dashes-and-content-without-space.yml
@@ -0,0 +1,2 @@
+---word1
+word2
diff --git a/tests/yaml_spec/various-combinations-of-tags-and-anchors.yml b/tests/yaml_spec/various-combinations-of-tags-and-anchors.yml
new file mode 100644
index 000000000..0ade841d2
--- /dev/null
+++ b/tests/yaml_spec/various-combinations-of-tags-and-anchors.yml
@@ -0,0 +1,26 @@
+---
+&a1
+!!str
+scalar1
+---
+!!str
+&a2
+scalar2
+---
+&a3
+!!str scalar3
+---
+&a4 !!map
+&a5 !!str key5: value4
+---
+a6: 1
+&anchor6 b6: 2
+---
+!!map
+&a8 !!str key8: value7
+---
+!!map
+!!str &a10 key10: value9
+---
+!!str &a11
+value11
diff --git a/tests/yaml_spec/various-location-of-anchors-in-flow-sequence.yml b/tests/yaml_spec/various-location-of-anchors-in-flow-sequence.yml
new file mode 100644
index 000000000..8345dfc93
--- /dev/null
+++ b/tests/yaml_spec/various-location-of-anchors-in-flow-sequence.yml
@@ -0,0 +1,6 @@
+&flowseq [
+ a: b,
+ &c c: d,
+ { &e e: f },
+ &g { g: h }
+]
diff --git a/tests/yaml_spec/various-trailing-comments.yml b/tests/yaml_spec/various-trailing-comments.yml
new file mode 100644
index 000000000..4fcc93e70
--- /dev/null
+++ b/tests/yaml_spec/various-trailing-comments.yml
@@ -0,0 +1,16 @@
+a: "double
+  quotes" # lala
+b: plain
+ value  # lala
+c  : #lala
+  d
+? # lala
+ - seq1
+: # lala
+ - #lala
+  seq2
+e:
+ &node # lala
+ - x: y
+block: > # lala
+  abcde
diff --git a/tests/yaml_spec/various-trailing-tabs.yml b/tests/yaml_spec/various-trailing-tabs.yml
new file mode 100644
index 000000000..42ad1a994
--- /dev/null
+++ b/tests/yaml_spec/various-trailing-tabs.yml
@@ -0,0 +1,4 @@
+a: b	
+seq:	
+ - a	
+c: d	#X
diff --git a/tests/yaml_spec/whitespace-after-scalars-in-flow.yml b/tests/yaml_spec/whitespace-after-scalars-in-flow.yml
new file mode 100644
index 000000000..3a6090961
--- /dev/null
+++ b/tests/yaml_spec/whitespace-after-scalars-in-flow.yml
@@ -0,0 +1,6 @@
+- [a, b , c ]
+- { "a"  : b
+   , c : 'd' ,
+   e   : "f"
+  }
+- [      ]
diff --git a/tests/yaml_spec/whitespace-around-colon-in-mappings.yml b/tests/yaml_spec/whitespace-around-colon-in-mappings.yml
new file mode 100644
index 000000000..5df48e7c6
--- /dev/null
+++ b/tests/yaml_spec/whitespace-around-colon-in-mappings.yml
@@ -0,0 +1,12 @@
+"top1" : 
+  "key1" : &alias1 scalar1
+'top2' : 
+  'key2' : &alias2 scalar2
+top3: &node3 
+  *alias1 : scalar3
+top4: 
+  *alias2 : scalar4
+top5   :    
+  scalar5
+top6: 
+  &anchor6 'key6' : scalar6
diff --git a/tests/yaml_spec/zero-indented-block-scalar-with-line-that-looks-like-a-comment.yml b/tests/yaml_spec/zero-indented-block-scalar-with-line-that-looks-like-a-comment.yml
new file mode 100644
index 000000000..ffb9aebc0
--- /dev/null
+++ b/tests/yaml_spec/zero-indented-block-scalar-with-line-that-looks-like-a-comment.yml
@@ -0,0 +1,4 @@
+--- >
+line1
+# no comment
+line3
diff --git a/tests/yaml_spec/zero-indented-block-scalar.yml b/tests/yaml_spec/zero-indented-block-scalar.yml
new file mode 100644
index 000000000..b4e414d7f
--- /dev/null
+++ b/tests/yaml_spec/zero-indented-block-scalar.yml
@@ -0,0 +1,4 @@
+--- >
+line1
+line2
+line3
diff --git a/tests_config/require_standalone.js b/tests_config/require_standalone.js
index deef3c51d..5da1a9a0d 100644
--- a/tests_config/require_standalone.js
+++ b/tests_config/require_standalone.js
@@ -12,7 +12,8 @@ const sources = [
   "parser-postcss.js",
   "parser-graphql.js",
   "parser-markdown.js",
-  "parser-vue.js"
+  "parser-vue.js",
+  "parser-yaml.js"
 ].map(filename =>
   fs.readFileSync(path.join(process.env.PRETTIER_DIR, filename), "utf-8")
 );
diff --git a/tests_integration/__tests__/__snapshots__/early-exit.js.snap b/tests_integration/__tests__/__snapshots__/early-exit.js.snap
index f15528e1d..90a782af5 100644
--- a/tests_integration/__tests__/__snapshots__/early-exit.js.snap
+++ b/tests_integration/__tests__/__snapshots__/early-exit.js.snap
@@ -62,7 +62,7 @@ Format options:
   --no-bracket-spacing     Do not print spaces between brackets.
   --jsx-bracket-same-line  Put > on the last line instead of at a new line.
                            Defaults to false.
-  --parser <flow|babylon|typescript|css|less|scss|json|json5|json-stringify|graphql|markdown|vue>
+  --parser <flow|babylon|typescript|css|less|scss|json|json5|json-stringify|graphql|markdown|vue|yaml>
                            Which parser to use.
   --print-width <int>      The line length where Prettier will try wrap.
                            Defaults to 80.
@@ -165,7 +165,7 @@ exports[`show warning with --help not-found (typo) (stderr) 1`] = `
 `;
 
 exports[`show warning with --help not-found (typo) (stdout) 1`] = `
-"--parser <flow|babylon|typescript|css|less|scss|json|json5|json-stringify|graphql|markdown|vue>
+"--parser <flow|babylon|typescript|css|less|scss|json|json5|json-stringify|graphql|markdown|vue|yaml>
 
   Which parser to use.
 
@@ -183,6 +183,7 @@ Valid options:
   graphql          GraphQL
   markdown         Markdown
   vue              Vue
+  yaml             YAML
 "
 `;
 
@@ -211,7 +212,7 @@ Format options:
   --no-bracket-spacing     Do not print spaces between brackets.
   --jsx-bracket-same-line  Put > on the last line instead of at a new line.
                            Defaults to false.
-  --parser <flow|babylon|typescript|css|less|scss|json|json5|json-stringify|graphql|markdown|vue>
+  --parser <flow|babylon|typescript|css|less|scss|json|json5|json-stringify|graphql|markdown|vue|yaml>
                            Which parser to use.
   --print-width <int>      The line length where Prettier will try wrap.
                            Defaults to 80.
diff --git a/tests_integration/__tests__/__snapshots__/help-options.js.snap b/tests_integration/__tests__/__snapshots__/help-options.js.snap
index 7f5978866..4038ee9b3 100644
--- a/tests_integration/__tests__/__snapshots__/help-options.js.snap
+++ b/tests_integration/__tests__/__snapshots__/help-options.js.snap
@@ -267,7 +267,7 @@ exports[`show detailed usage with --help no-semi (write) 1`] = `Array []`;
 exports[`show detailed usage with --help parser (stderr) 1`] = `""`;
 
 exports[`show detailed usage with --help parser (stdout) 1`] = `
-"--parser <flow|babylon|typescript|css|less|scss|json|json5|json-stringify|graphql|markdown|vue>
+"--parser <flow|babylon|typescript|css|less|scss|json|json5|json-stringify|graphql|markdown|vue|yaml>
 
   Which parser to use.
 
@@ -285,6 +285,7 @@ Valid options:
   graphql          GraphQL
   markdown         Markdown
   vue              Vue
+  yaml             YAML
 "
 `;
 
diff --git a/tests_integration/__tests__/__snapshots__/plugin-options.js.snap b/tests_integration/__tests__/__snapshots__/plugin-options.js.snap
index 2714d56b1..f3088198a 100644
--- a/tests_integration/__tests__/__snapshots__/plugin-options.js.snap
+++ b/tests_integration/__tests__/__snapshots__/plugin-options.js.snap
@@ -15,7 +15,7 @@ exports[` 1`] = `
 +                            Defaults to bar.
     --jsx-bracket-same-line  Put > on the last line instead of at a new line.
                              Defaults to false.
-    --parser <flow|babylon|typescript|css|less|scss|json|json5|json-stringify|graphql|markdown|vue>
+    --parser <flow|babylon|typescript|css|less|scss|json|json5|json-stringify|graphql|markdown|vue|yaml>
                              Which parser to use.
     --print-width <int>      The line length where Prettier will try wrap."
 `;
diff --git a/tests_integration/__tests__/__snapshots__/support-info.js.snap b/tests_integration/__tests__/__snapshots__/support-info.js.snap
index c0d166046..51915d876 100644
--- a/tests_integration/__tests__/__snapshots__/support-info.js.snap
+++ b/tests_integration/__tests__/__snapshots__/support-info.js.snap
@@ -5,7 +5,7 @@ exports[`API getSupportInfo() with version 0.0.0 -> 1.0.0 1`] = `
 - First value
 + Second value
 
-@@ -12,19 +12,35 @@
+@@ -15,19 +15,35 @@
     \\"options\\": Object {
       \\"bracketSpacing\\": Object {
         \\"default\\": true,
@@ -41,7 +41,7 @@ exports[`API getSupportInfo() with version 0.0.0 -> 1.0.0 1`] = `
         \\"type\\": \\"boolean\\",
       },
       \\"tabWidth\\": Object {
-@@ -39,17 +55,15 @@
+@@ -42,17 +58,15 @@
       \\"trailingComma\\": Object {
         \\"choices\\": Array [
           \\"none\\",
@@ -74,6 +74,9 @@ Object {
       "babylon",
       "flow",
     ],
+    "YAML": Array [
+      "yaml",
+    ],
   },
   "options": Object {
     "bracketSpacing": Object {
@@ -126,7 +129,7 @@ exports[`API getSupportInfo() with version 1.0.0 -> 1.4.0 1`] = `
 - First value
 + Second value
 
-@@ -1,29 +1,56 @@
+@@ -1,32 +1,59 @@
   Object {
     \\"languages\\": Object {
 +     \\"CSS\\": Array [
@@ -149,6 +152,9 @@ exports[`API getSupportInfo() with version 1.0.0 -> 1.4.0 1`] = `
 +     \\"TypeScript\\": Array [
 +       \\"typescript\\",
 +     ],
+      \\"YAML\\": Array [
+        \\"yaml\\",
+      ],
     },
     \\"options\\": Object {
       \\"bracketSpacing\\": Object {
@@ -183,7 +189,7 @@ exports[`API getSupportInfo() with version 1.0.0 -> 1.4.0 1`] = `
         \\"type\\": \\"choice\\",
       },
       \\"printWidth\\": Object {
-@@ -33,10 +60,28 @@
+@@ -36,10 +63,28 @@
           \\"start\\": 0,
           \\"step\\": 1,
         },
@@ -236,7 +242,7 @@ exports[`API getSupportInfo() with version 1.4.0 -> 1.5.0 1`] = `
         \\"flow\\",
       ],
       \\"JavaScript\\": Array [
-@@ -47,10 +53,12 @@
+@@ -50,10 +56,12 @@
         \\"choices\\": Array [
           \\"flow\\",
           \\"babylon\\",
@@ -283,8 +289,8 @@ exports[`API getSupportInfo() with version 1.5.0 -> 1.7.1 1`] = `
       \\"TypeScript\\": Array [
         \\"typescript\\",
       ],
-    },
-@@ -52,11 +52,13 @@
+      \\"YAML\\": Array [
+@@ -55,11 +55,13 @@
       \\"parser\\": Object {
         \\"choices\\": Array [
           \\"flow\\",
@@ -299,7 +305,7 @@ exports[`API getSupportInfo() with version 1.5.0 -> 1.7.1 1`] = `
         ],
         \\"default\\": \\"babylon\\",
         \\"type\\": \\"choice\\",
-@@ -86,10 +88,14 @@
+@@ -89,10 +91,14 @@
           \\"start\\": 0,
           \\"step\\": 1,
         },
@@ -335,7 +341,7 @@ exports[`API getSupportInfo() with version 1.7.1 -> 1.8.0 1`] = `
       ],
       \\"TypeScript\\": Array [
         \\"typescript\\",
-@@ -43,10 +46,14 @@
+@@ -46,10 +49,14 @@
       },
       \\"filepath\\": Object {
         \\"default\\": undefined,
@@ -350,7 +356,7 @@ exports[`API getSupportInfo() with version 1.7.1 -> 1.8.0 1`] = `
         \\"type\\": \\"boolean\\",
       },
       \\"parser\\": Object {
-@@ -57,10 +64,11 @@
+@@ -60,10 +67,11 @@
           \\"css\\",
           \\"less\\",
           \\"scss\\",
@@ -369,7 +375,7 @@ exports[`API getSupportInfo() with version 1.8.0 -> 1.8.2 1`] = `
 - First value
 + Second value
 
-@@ -78,10 +78,18 @@
+@@ -81,10 +81,18 @@
           \\"start\\": 0,
           \\"step\\": 1,
         },
@@ -412,7 +418,7 @@ exports[`API getSupportInfo() with version 1.8.2 -> undefined 1`] = `
         \\"flow\\",
       ],
       \\"JavaScript\\": Array [
-@@ -27,12 +33,23 @@
+@@ -27,15 +33,26 @@
         \\"scss\\",
       ],
       \\"TypeScript\\": Array [
@@ -421,6 +427,9 @@ exports[`API getSupportInfo() with version 1.8.2 -> undefined 1`] = `
 +     \\"Vue\\": Array [
 +       \\"vue\\",
 +     ],
+      \\"YAML\\": Array [
+        \\"yaml\\",
+      ],
     },
     \\"options\\": Object {
 +     \\"arrowParens\\": Object {
@@ -436,7 +445,7 @@ exports[`API getSupportInfo() with version 1.8.2 -> undefined 1`] = `
         \\"type\\": \\"boolean\\",
       },
       \\"cursorOffset\\": Object {
-@@ -63,16 +80,27 @@
+@@ -66,16 +83,27 @@
           \\"typescript\\",
           \\"css\\",
           \\"less\\",
@@ -465,7 +474,7 @@ exports[`API getSupportInfo() with version 1.8.2 -> undefined 1`] = `
         \\"range\\": Object {
           \\"end\\": Infinity,
           \\"start\\": 0,
-@@ -80,14 +108,15 @@
+@@ -83,14 +111,15 @@
         },
         \\"type\\": \\"int\\",
       },
@@ -689,6 +698,28 @@ exports[`CLI --support-info (stdout) 1`] = `
       \\"since\\": \\"1.10.0\\",
       \\"tmScope\\": \\"text.html.vue\\",
       \\"vscodeLanguageIds\\": [\\"vue\\"]
+    },
+    {
+      \\"aceMode\\": \\"yaml\\",
+      \\"aliases\\": [\\"yml\\"],
+      \\"codemirrorMimeType\\": \\"text/x-yaml\\",
+      \\"codemirrorMode\\": \\"yaml\\",
+      \\"extensions\\": [
+        \\".yml\\",
+        \\".reek\\",
+        \\".rviz\\",
+        \\".sublime-syntax\\",
+        \\".syntax\\",
+        \\".yaml\\",
+        \\".yaml-tmlanguage\\",
+        \\".yml.mysql\\"
+      ],
+      \\"filenames\\": [\\".clang-format\\", \\".clang-tidy\\", \\".gemrc\\"],
+      \\"linguistLanguageId\\": 407,
+      \\"name\\": \\"YAML\\",
+      \\"parsers\\": [\\"yaml\\"],
+      \\"tmScope\\": \\"source.yaml\\",
+      \\"vscodeLanguageIds\\": [\\"yaml\\"]
     }
   ],
   \\"options\\": [
diff --git a/website/data/languages.yml b/website/data/languages.yml
index 0a06f94f7..c06b1ad2b 100644
--- a/website/data/languages.yml
+++ b/website/data/languages.yml
@@ -29,6 +29,11 @@
   variants:
   - "[CommonMark](http://commonmark.org/)"
   - "[GitHub Flavored Markdown](https://github.github.com/gfm/)"
+- name: YAML
+  showName: false
+  image: /images/languages/tools_yaml.svg
+  variants:
+  - "[YAML](http://yaml.org/)"
 - name: Work in Progress
   showName: true
   image: /images/languages/tools_wip.svg
diff --git a/website/playground/codeSamples.js b/website/playground/codeSamples.js
index 37f267073..ffa95c9ed 100644
--- a/website/playground/codeSamples.js
+++ b/website/playground/codeSamples.js
@@ -184,6 +184,49 @@ export default function(parser) {
         ".and { css: too! important }",
         "</style>"
       ].join("\n");
+    case "yaml":
+      // modified from http://yaml.org/start.html
+      return [
+        "---",
+        "invoice   :   34843",
+        "date   :    2001-01-23",
+        "bill-to:    &id001",
+        "    given    : Chris",
+        "    family  : Dumars",
+        "    address:",
+        "        lines: |",
+        "            458 Walkman Dr.",
+        "            Suite #292",
+        "        city        : Royal Oak",
+        "        state      : MI",
+        "        postal  : 48046",
+        "ship-to: *id001",
+        "product:",
+        "    - ",
+        "    ",
+        "      sku         : BL394D",
+        "      ? quantity    ",
+        "      : 4",
+        "      description : Basketball",
+        "      ? price       ",
+        "      : 450.00",
+        "      ",
+        "      ",
+        "    - ",
+        "      sku          :   BL4438H",
+        "      quantity      :  1",
+        "      description:      Super Hoop",
+        "      price         :  2392.00",
+        "      ",
+        "      ",
+        "tax  :  251.42",
+        "total : 4443.52",
+        "comments: >",
+        "    Late afternoon is best.",
+        "    Backup contact is Nancy",
+        "    Billsmer @ 338-4338.",
+        ""
+      ].join("\n");
     default:
       return "";
   }
diff --git a/website/static/images/languages/tools_yaml.svg b/website/static/images/languages/tools_yaml.svg
new file mode 100644
index 000000000..a56e91182
--- /dev/null
+++ b/website/static/images/languages/tools_yaml.svg
@@ -0,0 +1,20 @@
+<!--
+
+This icon is modified from https://github.com/file-icons/source/blob/8e0a4ac/svg/YAML-Alt4.svg
+
+Copyright (c) 2016-2018, John Gardner
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+-->
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="512px" height="512px"><path fill="#C695C8" d="M235.793457,20.9389935l-91.8156738,137.6740112v87.2750244H87.7020035v-87.2751465L0,20.9389935h63.2502899l55.7678528,88.6458817l56.2244568-88.6458817H235.793457z M330.2944641,195.8635406H228.4328003l-20.7168121,50.0244904h-45.1060944l95.3815918-224.9490356h46.1360474l91.5108948,224.9490356h-48.1963501L330.2944641,195.8635406z M313.3734131,151.1300201l-31.2258606-82.5503616l-34.8368378,82.5503616H313.3734131z M87.7023544,270.5895996v220.471405h47.3023605V338.9823914l49.5055237,102.2188416h37.2337494l51.1964111-105.8118896v155.6254272h45.3786011V270.5895996h-61.959259l-54.977951,99.7063904l-52.3599548-99.7063904H87.7023544z M512,443.201355H395.6384277V270.5895996h-48.1963501v219.5221863L512,490.111969V443.201355z"/></svg>
\ No newline at end of file
diff --git a/website/static/service-worker.js b/website/static/service-worker.js
index bfebf132a..88c9f1590 100644
--- a/website/static/service-worker.js
+++ b/website/static/service-worker.js
@@ -16,6 +16,7 @@ toolbox.precache([
   "lib/parser-glimmer.js",
   "lib/parser-graphql.js",
   "lib/parser-markdown.js",
+  "lib/parser-yaml.js",
   "playground.js",
   "https://unpkg.com/sw-toolbox@3.6.0/sw-toolbox.js",
 
diff --git a/website/static/worker.js b/website/static/worker.js
index 7e97b331b..ed0d4e2f7 100644
--- a/website/static/worker.js
+++ b/website/static/worker.js
@@ -70,6 +70,12 @@ var parsers = {
   get vue() {
     importScriptOnce("lib/parser-vue.js");
     return prettierPlugins.vue.parsers.vue;
+  },
+
+  // YAML
+  get yaml() {
+    importScriptOnce("lib/parser-yaml.js");
+    return prettierPlugins.yaml.parsers.yaml;
   }
 };
 
diff --git a/yarn.lock b/yarn.lock
index 3cd2c4a0a..fc0b2cc3c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5026,6 +5026,12 @@ ripemd160@^2.0.0, ripemd160@^2.0.1:
     hash-base "^2.0.0"
     inherits "^2.0.1"
 
+rollup-plugin-alias@1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/rollup-plugin-alias/-/rollup-plugin-alias-1.4.0.tgz#120cba7c46621c03138f0ca6fd5dd2ade9872db9"
+  dependencies:
+    slash "^1.0.0"
+
 rollup-plugin-babel@4.0.0-beta.4:
   version "4.0.0-beta.4"
   resolved "https://registry.yarnpkg.com/rollup-plugin-babel/-/rollup-plugin-babel-4.0.0-beta.4.tgz#d869646885d6ad73dd10791a261fb92674a80410"
@@ -5688,6 +5694,10 @@ tslib@^1.8.0:
   version "1.8.0"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.8.0.tgz#dc604ebad64bcbf696d613da6c954aa0e7ea1eb6"
 
+tslib@^1.9.1:
+  version "1.9.1"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.9.1.tgz#a5d1f0532a49221c87755cfcc89ca37197242ba7"
+
 tty-browserify@0.0.0:
   version "0.0.0"
   resolved "https://registry.yarnpkg.com/tty-browserify/-/tty-browserify-0.0.0.tgz#a157ba402da24e9bf957f9aa69d524eed42901a6"
@@ -6100,6 +6110,17 @@ yallist@^3.0.0, yallist@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/yallist/-/yallist-3.0.2.tgz#8452b4bb7e83c7c188d8041c1a837c773d6d8bb9"
 
+yaml-unist-parser@1.0.0-beta.4:
+  version "1.0.0-beta.4"
+  resolved "https://registry.yarnpkg.com/yaml-unist-parser/-/yaml-unist-parser-1.0.0-beta.4.tgz#6603d017ec1396466825a141de33637bf2e9e0c2"
+  dependencies:
+    lines-and-columns "^1.1.6"
+    tslib "^1.9.1"
+
+yaml@1.0.0-beta.7:
+  version "1.0.0-beta.7"
+  resolved "https://registry.yarnpkg.com/yaml/-/yaml-1.0.0-beta.7.tgz#681937c5b2d85b6eb474d47e877f5e63a7efe20c"
+
 yargs-parser@^7.0.0:
   version "7.0.0"
   resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-7.0.0.tgz#8d0ac42f16ea55debd332caf4c4038b3e3f5dfd9"