// 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 an
    AssignmentElement within a generator function body, it behaves as a
    YieldExpression.
es6id: 12.14.5.4
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(86);

assert.sameValue(assignmentResult, value);
assert.sameValue(iterationResult.value, undefined);
assert.sameValue(iterationResult.done, true);
assert.sameValue(x, 86);