Christopher Chedeau
cf45afba61
- This brings in the flow test suite that contains a ton of JavaScript parsing edge cases - This creates snapshot tests using the pretty printer for all of them - If uncomment `RUN_AST_TESTS` line in `tests/run_specs.js`, it checks ast(pretty_print(x)) == ast(x). Right now, "178 failed, 197 passed, 375 of 377 total". So half of the tests are not passing, most of them are crashes and many of the rest are subtle issues.
198 lines
3.3 KiB
JavaScript
198 lines
3.3 KiB
JavaScript
/* @flow
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* test errors on illegal rebinding/reassignment
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*
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* type class let const var (reassign)
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* type x x x x x x
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* class x x x x x
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* let x x x x x
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* const x x x x x x
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* var x x x x
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*/
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// type x *
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function type_type() {
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type A = number;
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type A = number; // error: name already bound
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}
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function type_class() {
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type A = number;
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class A {} // error: name already bound
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}
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function type_let() {
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type A = number;
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let A = 0; // error: name already bound
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}
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function type_const() {
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type A = number;
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const A = 0; // error: name already bound
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}
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function type_var() {
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type A = number;
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var A = 0; // error: name already bound
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}
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function type_reassign() {
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type A = number;
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A = 42; // error: type alias ref'd from value pos
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}
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// class x *
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function class_type() {
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class A {}
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type A = number; // error: name already bound
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}
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function class_class() {
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class A {}
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class A {} // error: name already bound
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}
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function class_let() {
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class A {}
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let A = 0; // error: name already bound
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}
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function class_const() {
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class A {}
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const A = 0; // error: name already bound
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}
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function class_var() {
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class A {}
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var A = 0; // error: name already bound
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}
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// let x *
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function let_type() {
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let A = 0;
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type A = number; // error: name already bound
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}
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function let_class() {
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let A = 0;
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class A {} // error: name already bound
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}
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function let_let() {
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let A = 0;
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let A = 0; // error: name already bound
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}
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function let_const() {
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let A = 0;
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const A = 0; // error: name already bound
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}
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function let_var() {
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let A = 0;
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var A = 0; // error: name already bound
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}
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// const x *
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function const_type() {
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const A = 0;
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type A = number; // error: name already bound
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}
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function const_class() {
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const A = 0;
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class A {} // error: name already bound
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}
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function const_let() {
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const A = 0;
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let A = 0; // error: name already bound
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}
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function const_const() {
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const A = 0;
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const A = 0; // error: name already bound
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}
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function const_var() {
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const A = 0;
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var A = 0; // error: name already bound
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}
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function const_reassign() {
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const A = 0;
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A = 42; // error: cannot be reassigned
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}
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// var x *
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function var_type() {
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var A = 0;
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type A = number; // error: name already bound
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}
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function var_class() {
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var A = 0;
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class A {} // error: name already bound
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}
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function var_let() {
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var A = 0;
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let A = 0; // error: name already bound
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}
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function var_const() {
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var A = 0;
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const A = 0; // error: name already bound
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}
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function var_var() {
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var A = 0;
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var A = 0; // OK
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}
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// function x *
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function function_toplevel() {
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function a() {};
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function a() {}; // OK
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}
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function function_block() {
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{
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function a() {};
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function a() {}; // error: name already bound
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}
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}
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// corner cases
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function var_shadow_nested_scope() {
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{
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let x = 0;
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{
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var x = 0; // error: name already bound
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}
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}
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}
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function type_shadow_nested_scope() {
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{
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let x = 0;
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{
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type x = string; // error: name already bound
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}
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}
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}
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// fn params name clash
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function fn_params_name_clash(x, x /* error: x already bound */) {}
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function fn_params_clash_fn_binding(x,y) {
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let x = 0; // error: x already bound
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var y = 0; // OK
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}
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