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Diffstat (limited to 'js/src/tests/test262/built-ins/Array/prototype/keys/iteration-mutable.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Array/prototype/keys/iteration-mutable.js | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/keys/iteration-mutable.js b/js/src/tests/test262/built-ins/Array/prototype/keys/iteration-mutable.js new file mode 100644 index 0000000000..e1eee7e83c --- /dev/null +++ b/js/src/tests/test262/built-ins/Array/prototype/keys/iteration-mutable.js @@ -0,0 +1,41 @@ +// 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-array.prototype.keys +description: > + New items in the array are accessible via iteration until iterator is "done". +info: | + When an item is added to the array after the iterator is created but + before the iterator is "done" (as defined by 22.1.5.2.1), the new item's + key should be accessible via iteration. When an item is added to the + array after the iterator is "done", the new item's key should not be + accessible via iteration. +---*/ + +var array = []; +var iterator = array.keys(); +var result; + +array.push('a'); + +result = iterator.next(); +assert.sameValue(result.done, false, 'First result `done` flag'); +assert.sameValue(result.value, 0, 'First result `value`'); + +result = iterator.next(); +assert.sameValue(result.done, true, 'Exhausted result `done` flag'); +assert.sameValue(result.value, undefined, 'Exhausted result `value`'); + +array.push('b'); + +result = iterator.next(); +assert.sameValue( + result.done, true, + 'Exhausted result `done` flag (after push)' +); +assert.sameValue( + result.value, undefined, + 'Exhausted result `value` (after push)' +); + +reportCompare(0, 0); |