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// Copyright (C) 2017 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
desc: >
IteratorClose is not called when rest element evaluation has exhausted the
iterator
info: |
ArrayAssignmentPattern :
[ AssignmentElementList , Elisionopt AssignmentRestElementopt ]
[...]
6. If AssignmentRestElement is present, then
a. Let status be the result of performing
IteratorDestructuringAssignmentEvaluation of AssignmentRestElement
with iteratorRecord as the argument.
7. If iteratorRecord.[[Done]] is false, return ? IteratorClose(iterator, status).
8. Return Completion(status).
features: [Symbol.iterator]
template: async-generator
es6id: 12.14.5.2
esid: sec-runtime-semantics-destructuringassignmentevaluation
---*/
//- setup
let nextCount = 0;
let returnCount = 0;
let x, y;
let iterator = {
next() {
nextCount += 1;
return { value: nextCount, done: nextCount > 1 };
},
return() {
returnCount += 1;
}
};
let iterable = {
[Symbol.iterator]() {
return iterator;
}
};
//- elems
[ x , ...y ]
//- vals
iterable
//- teardown
iter.next().then(() => {
iter.return().then(() => {
assert.sameValue(nextCount, 2, 'nextCount');
assert.sameValue(returnCount, 0, 'returnCount');
assert.sameValue(x, 1, 'x');
assert.sameValue(y.length, 0, 'y.length');
}).then($DONE, $DONE);
}).then($DONE, $DONE);
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