Ported test suite: line-after-filepath-with-errors (#35)

Notes on differences:

- Running `prettier ./*` vs `prettier --check ./*` has different
  behaviour for invalid files. in the former, no errors are raised and
  the files are essentially ignored. We should decide if this is expected
- Running with `--list-different`, invalid files have their paths listed in
  stderr, while in prettier they will raise errors.

* test: template fixture path in string assertions

* test: fix up tests

Author: 43081j

test/__fixtures__/syntax-errors/invalid-1.js

@@ -0,0 +1 @@
+foo (+-) bar

test/__fixtures__/syntax-errors/invalid-2.js

@@ -0,0 +1 @@
+foo (+-) bar

test/__fixtures__/syntax-errors/invalid-2.unknown

@@ -0,0 +1 @@
+function foo() {}

test/__fixtures__/syntax-errors/valid-1.js

@@ -0,0 +1,59 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`Line breaking after filepath with errors (stderr) 1`] = `
+"[error] invalid-1.js: SyntaxError: Unexpected token (1:8)
+[error] > 1 | foo (+-) bar
+[error]     |        ^
+[error]   2 |
+[error] invalid-2.js: SyntaxError: Unexpected token (1:8)
+[error] > 1 | foo (+-) bar
+[error]     |        ^
+[error]   2 |
+[error] invalid-2.unknown: UndefinedParserError: No parser could be inferred for file "$CWD/invalid-2.unknown"."
+`;
+
+exports[`Line breaking after filepath with errors (stderr) 2`] = `
+"invalid-1.js
+invalid-2.js
+invalid-2.unknown"
+`;
+
+exports[`Line breaking after filepath with errors (stderr) 3`] = `
+"[error] invalid-1.js: SyntaxError: Unexpected token (1:8)
+[error] > 1 | foo (+-) bar
+[error]     |        ^
+[error]   2 |
+[error] invalid-2.js: SyntaxError: Unexpected token (1:8)
+[error] > 1 | foo (+-) bar
+[error]     |        ^
+[error]   2 |
+[error] invalid-2.unknown: UndefinedParserError: No parser could be inferred for file "$CWD/invalid-2.unknown"."
+`;
+
+exports[`Line breaking after filepath with errors (stderr) 4`] = `
+"[error] invalid-1.js: SyntaxError: Unexpected token (1:8)
+[error] > 1 | foo (+-) bar
+[error]     |        ^
+[error]   2 |
+[error] invalid-2.js: SyntaxError: Unexpected token (1:8)
+[error] > 1 | foo (+-) bar
+[error]     |        ^
+[error]   2 |
+[error] invalid-2.unknown: UndefinedParserError: No parser could be inferred for file "$CWD/invalid-2.unknown"."
+`;
+
+exports[`Line breaking after filepath with errors (stdout) 1`] = `"function foo() {}"`;
+
+exports[`Line breaking after filepath with errors (stdout) 2`] = `""`;
+
+exports[`Line breaking after filepath with errors (stdout) 3`] = `"Checking formatting..."`;
+
+exports[`Line breaking after filepath with errors (stdout) 4`] = `""`;
+
+exports[`Line breaking after filepath with errors (write) 1`] = `[]`;
+
+exports[`Line breaking after filepath with errors (write) 2`] = `[]`;
+
+exports[`Line breaking after filepath with errors (write) 3`] = `[]`;
+
+exports[`Line breaking after filepath with errors (write) 4`] = `[]`;

test/__tests__/__snapshots__/line-after-filepath-with-errors.js.snap

@@ -0,0 +1,19 @@
+import { runCli } from "../utils";
+
+describe("Line breaking after filepath with errors", () => {
+  runCli("syntax-errors", ["./*.{js,unknown}"]).test({
+    status: 1,
+  });
+  // TODO (43081j): this test throws errors in prettier. here it doesn't, and
+  // lists each invalid file path in the output (stderr). we should decide
+  // if to align with prettier
+  runCli("syntax-errors", ["--list-different", "./*.{js,unknown}"]).test({
+    status: 1,
+  });
+  runCli("syntax-errors", ["--check", "./*.{js,unknown}"]).test({
+    status: 1,
+  });
+  runCli("syntax-errors", ["--write", "./*.{js,unknown}"]).test({
+    status: 1,
+  });
+});