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// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
desc: IteratorClose not invoked when elision exhausts the iterator
info: |
ArrayAssignmentPattern :
[ AssignmentElementList , Elisionopt AssignmentRestElementopt ]
[...]
6. If Elision is present, then
a. Let status be the result of performing
IteratorDestructuringAssignmentEvaluation of Elision with
iteratorRecord as the argument.
b. If status is an abrupt completion, then
[...]
8. If iteratorRecord.[[done]] is false, return IteratorClose(iterator,
status).
9. Return Completion(status).
features: [Symbol.iterator]
template: default
es6id: 12.14.5.2
esid: sec-runtime-semantics-destructuringassignmentevaluation
---*/
//- setup
var nextCount = 0;
var returnCount = 0;
var iterable = {};
var x;
var iterator = {
next: function() {
nextCount += 1;
return { done: nextCount > 1 };
},
return: function() {
returnCount += 1;
}
};
iterable[Symbol.iterator] = function() {
return iterator;
};
//- elems
[ x , , ]
//- vals
iterable
//- body
assert.sameValue(nextCount, 2);
assert.sameValue(returnCount, 0);
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