diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/WeakMap/empty-iterable.js')
-rw-r--r-- | js/src/tests/test262/built-ins/WeakMap/empty-iterable.js | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/WeakMap/empty-iterable.js b/js/src/tests/test262/built-ins/WeakMap/empty-iterable.js new file mode 100644 index 0000000000..b3554b0aa5 --- /dev/null +++ b/js/src/tests/test262/built-ins/WeakMap/empty-iterable.js @@ -0,0 +1,33 @@ +// 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-weakmap-iterable +description: > + If the iterable argument is empty, return new WeakMap object. +info: | + 23.3.1.1 WeakMap ( [ iterable ] ) + + ... + 9. Repeat + a. Let next be IteratorStep(iter). + b. ReturnIfAbrupt(next). + c. If next is false, return map. + ... +---*/ + +var counter = 0; +var set = WeakMap.prototype.set; +WeakMap.prototype.set = function(value) { + counter++; + return set.call(this, value); +}; +var map = new WeakMap([]); + +assert.sameValue(Object.getPrototypeOf(map), WeakMap.prototype); +assert(map instanceof WeakMap); +assert.sameValue( + counter, 0, + 'empty iterable does not call WeakMap.prototype.set' +); + +reportCompare(0, 0); |