test262/test/language/statements/generators/yield-as-yield-operand.js

30 lines
821 B
JavaScript

// Copyright (C) 2013 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
`yield` expressions may be used as the right-hand-side of other `yield`
expressions.
es6id: 14.4
features: [generators]
---*/
var iter, result;
function* g() {
yield yield 1;
}
iter = g();
result = iter.next();
assert.sameValue(result.value, 1, 'First result `value`');
assert.sameValue(result.done, false, 'First result `done` flag');
result = iter.next();
assert.sameValue(result.value, undefined, 'Second result `value`');
assert.sameValue(result.done, false, 'Second result `done` flag');
result = iter.next();
assert.sameValue(result.value, undefined, 'Third result `value`');
assert.sameValue(result.done, true, 'Thid result `done` flag');