add another test case

tests_integration/__tests__/__snapshots__/skip-folders.js.snap

@@ -1,9 +1,17 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`skips folders (stdout) 1`] = `
-"skip-folders/a/file.js
-skip-folders/b/file.js
+exports[`skip folders passed specifically (stdout) 1`] = `
+"a/file.js
+b/file.js
 "
 `;
 
-exports[`skips folders (write) 1`] = `Array []`;
+exports[`skip folders passed specifically (write) 1`] = `Array []`;
+
+exports[`skips folders in glob (stdout) 1`] = `
+"a/file.js
+b/file.js
+"
+`;
+
+exports[`skips folders in glob (write) 1`] = `Array []`;

tests_integration/__tests__/skip-folders.js

@@ -4,9 +4,16 @@ const runPrettier = require("../runPrettier");
 
 expect.addSnapshotSerializer(require("../path-serializer"));
 
-describe("skips folders", () => {
-  runPrettier("cli", ["skip-folders/**/*", "-l"]).test({
+describe("skips folders in glob", () => {
+  runPrettier("cli/skip-folders", ["**/*", "-l"]).test({
     status: 1,
     stderr: ""
   });
 });
+
+describe("skip folders passed specifically", () => {
+  runPrettier("cli/skip-folders", [
+    "a", "a/file.js", "b", "b/file.js",
+    "-l"
+  ]).test({ status: 1, stderr: "" });
+});