test262/test/language/identifiers/start-underscore.js
Mike Pennisi e0d59b0ede Add tests for Unicode escape sequences
- Re-organize existing tests for identifiers
  Name files according to their content (not their ES5 ID). Move tests
  for IdentifierName and LabelIdentifier to more appropriate directories.
- Simplify and correct tests
  Instead of asserting successful runtime evaluation using `eval`, rely
  on the test runner's ability to detect syntax errors. Update the test
  bodies to test the grammar referenced by their ES5 ID and
  description--the IdentifierStart pattern.
- Use `negative` frontmatter to assert SyntaxErrors
- Remove redundant tests
- Use `assert.equal` helper function
- Add equivalent tests for literal unicode chars
- Add tests for variable-length unicode escape
2015-07-09 18:52:22 -04:00

21 lines
392 B
JavaScript

// Copyright 2009 the Sputnik authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
info: "IdentifierPart :: IdentifierStart"
es5id: 7.6_A2.1_T3
description: "IdentifierStart :: _"
---*/
var _ = 1;
assert.sameValue(_, 1);
var _x = 2;
assert.sameValue(_x, 2);
var _$ = 3;
assert.sameValue(_$, 3);
var __ = 4;
assert.sameValue(__, 4);