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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/built-ins/Set/prototype/forEach/iterates-values-deleted-then-readded.js | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Set/prototype/forEach/iterates-values-deleted-then-readded.js b/js/src/tests/test262/built-ins/Set/prototype/forEach/iterates-values-deleted-then-readded.js new file mode 100644 index 0000000000..b764598d72 --- /dev/null +++ b/js/src/tests/test262/built-ins/Set/prototype/forEach/iterates-values-deleted-then-readded.js @@ -0,0 +1,47 @@ +// 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 ] ) + + ... + 7. Repeat for each e that is an element of entries, in original insertion order + a. If e is not empty, then + i. Let funcResult be Call(callbackfn, T, «e, e, S»). + ii. ReturnIfAbrupt(funcResult). + ... + + NOTE: + + ... + Values that are deleted after the call to forEach begins and before being visited are not visited unless the value is added again before the forEach call completes. + ... + +---*/ + + +var s = new Set([1, 2, 3]); +var expects = [1, 3, 2]; + +s.forEach(function(value, entry, set) { + var expect = expects.shift(); + + // Delete `2` before being visited + if (value === 1) { + set.delete(2); + } + + // Re-add `2` before forEach call completes + if (value === 3) { + set.add(2); + } + + assert.sameValue(value, expect); + assert.sameValue(entry, expect); + assert.sameValue(set, s); +}); + +assert.sameValue(expects.length, 0, "The value of `expects.length` is `0`"); + +reportCompare(0, 0); |