test262/test/language/expressions/assignment/destructuring/array-elem-init-yield-expr.js

33 lines
911 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 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);