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// 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);
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