diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/Set/prototype/forEach/this-arg-explicit-cannot-override-lexical-this-arrow.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Set/prototype/forEach/this-arg-explicit-cannot-override-lexical-this-arrow.js | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Set/prototype/forEach/this-arg-explicit-cannot-override-lexical-this-arrow.js b/js/src/tests/test262/built-ins/Set/prototype/forEach/this-arg-explicit-cannot-override-lexical-this-arrow.js new file mode 100644 index 0000000000..7c20508936 --- /dev/null +++ b/js/src/tests/test262/built-ins/Set/prototype/forEach/this-arg-explicit-cannot-override-lexical-this-arrow.js @@ -0,0 +1,28 @@ +// Copyright (C) 2015 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +esid: sec-set.prototype.forEach +description: > + Set.prototype.forEach ( callbackfn [ , thisArg ] ) + + ... + 5. If thisArg was supplied, let T be thisArg; else let T be undefined. + ... + + An arrow function will ignore an explicit thisArg + +features: [arrow-function] +---*/ + +var s = new Set([1]); +var usurper = {}; +var counter = 0; + +s.forEach(_ => { + assert.notSameValue(this, usurper, "`this` is not `usurper`"); + counter++; +}, usurper); + +assert.sameValue(counter, 1, "`forEach` is not a no-op"); + +reportCompare(0, 0); |