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46 lines
1.1 KiB
Plaintext
46 lines
1.1 KiB
Plaintext
// Copyright (C) 2016 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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desc: >
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IteratorClose is not called when assignment evaluation has exhausted the
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iterator
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info: |
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ArrayAssignmentPattern : [ Elisionopt AssignmentRestElement ]
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[...]
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5. Let result be the result of performing
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IteratorDestructuringAssignmentEvaluation of AssignmentRestElement with
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iteratorRecord as the argument
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6. If iteratorRecord.[[done]] is false, return IteratorClose(iterator,
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result).
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7. Return result.
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features: [Symbol.iterator]
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template: default
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esid: sec-runtime-semantics-destructuringassignmentevaluation
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---*/
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//- setup
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var nextCount = 0;
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var returnCount = 0;
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var x;
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var iterable = {};
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var iterator = {
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next: function() {
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nextCount += 1;
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return { done: true };
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},
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return: function() {
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returnCount += 1;
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}
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};
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iterable[Symbol.iterator] = function() {
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return iterator;
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};
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//- elems
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[ ...x ]
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//- vals
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iterable
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//- body
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assert.sameValue(nextCount, 1);
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assert.sameValue(returnCount, 0);
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