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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: Abrupt completion returned during evaluation of elision
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
i. If iteratorRecord.[[done]] is false, return
IteratorClose(iterator, status).
ii. Return Completion(status).
features: [Symbol.iterator]
template: error
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;
if (nextCount === 2) {
throw new Test262Error();
}
// Set an upper-bound to limit unnecessary iteration in non-conformant
// implementations
return { done: nextCount > 10 };
},
return: function() {
returnCount += 1;
}
};
iterable[Symbol.iterator] = function() {
return iterator;
};
//- error
Test262Error
//- elems
[ x , , ]
//- vals
iterable
//- teardown
assert.sameValue(nextCount, 2);
assert.sameValue(returnCount, 0);
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