test262/test/language/expressions/assignment/destructuring/array-rest-nested-obj-yield...

33 lines
939 B
JavaScript

// 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 Initializer of a nested
destructuring assignment and within a generator function body, it should
behave as a YieldExpression.
es6id: 12.14.5.3
features: [generators]
---*/
var value = [{}];
var assignmentResult, iterationResult, iter, x;
iter = (function*() {
assignmentResult = [...{ x = yield }] = value;
}());
iterationResult = iter.next();
assert.sameValue(assignmentResult, undefined);
assert.sameValue(iterationResult.value, undefined);
assert.sameValue(iterationResult.done, false);
assert.sameValue(x, undefined);
iterationResult = iter.next(4);
assert.sameValue(assignmentResult, value);
assert.sameValue(iterationResult.value, undefined);
assert.sameValue(iterationResult.done, true);
assert.sameValue(x, 4);