mirror of https://github.com/tc39/test262.git
40 lines
1.1 KiB
JavaScript
40 lines
1.1 KiB
JavaScript
// Copyright (C) 2015 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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es6id: 23.2.1.1
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description: >
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Set ( [ iterable ] )
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When the Set function is called with optional argument iterable the following steps are taken:
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...
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7. Else,
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a. Let adder be Get(set, "add").
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b. ReturnIfAbrupt(adder).
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c. If IsCallable(adder) is false, throw a TypeError exception.
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d. Let iter be GetIterator(iterable).
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e. ReturnIfAbrupt(iter).
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...
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9. Repeat
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a. Let next be IteratorStep(iter).
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b. ReturnIfAbrupt(next).
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c. If next is false, return set.
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d. Let nextValue be IteratorValue(next).
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e. ReturnIfAbrupt(nextValue).
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f. Let status be Call(adder, set, «nextValue.[[value]]»).
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g. If status is an abrupt completion, return IteratorClose(iter, status).
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---*/
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var setAdd = Set.prototype.add;
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var counter = 0;
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Set.prototype.add = function(value) {
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counter++;
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setAdd.call(this, value);
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};
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var s = new Set([1, 2]);
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assert.sameValue(counter, 2, "`Set.prototype.add` called twice.");
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