test262/test/language/expressions/assignment/destructuring/obj-prop-elem-target-yield-...

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2015-04-17 23:12:38 +02:00
// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
When a `yield` token appears within the DestructuringAssignmentTarget of an
AssignmentElement and within a generator function body, it should behave as
a YieldExpression.
es6id: 12.14.5.4
features: [generators]
---*/
var value = { x: 23 };
var x = {};
var assignmentResult, iterationResult, iter;
iter = (function*() {
assignmentResult = { x: x[yield] } = value;
}());
iterationResult = iter.next();
assert.sameValue(assignmentResult, undefined);
assert.sameValue(iterationResult.value, undefined);
assert.sameValue(iterationResult.done, false);
assert.sameValue(x.prop, undefined);
iterationResult = iter.next('prop');
assert.sameValue(assignmentResult, value);
assert.sameValue(iterationResult.value, undefined);
assert.sameValue(iterationResult.done, true);
assert.sameValue(x.prop, 23);