mirror of https://github.com/tc39/test262.git
49 lines
1.1 KiB
JavaScript
49 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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esid: sec-set-constructor
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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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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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features: [Symbol.iterator]
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---*/
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var count = 0;
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var iterable = {};
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iterable[Symbol.iterator] = function() {
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return {
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next: function() {
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return {
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value: null,
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done: false
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};
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},
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return: function() {
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count += 1;
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}
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};
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};
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Set.prototype.add = function() {
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throw new Error();
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}
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assert.throws(Error, function() {
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new Set(iterable);
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});
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assert.sameValue(
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count, 1, "The iterator is closed when `Set.prototype.add` throws an error."
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);
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