test262/test/language/expressions/yield/from-with.js

41 lines
1.0 KiB
JavaScript

// Copyright (C) 2013 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 25.2
description: >
The operand to a `yield` expression should honor the semantics of the
`with` statement.
flags: [noStrict]
features: [generators]
---*/
function* g() {
var x = 1;
yield x;
with ({ x: 2 }) {
yield x;
}
yield x;
}
var iter = g();
var result;
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, 2, 'Second result `value`');
assert.sameValue(result.done, false, 'Second result `done` flag');
result = iter.next();
assert.sameValue(result.value, 1, 'Third result `value`');
assert.sameValue(result.done, false, 'Third result `done` flag');
result = iter.next();
assert.sameValue(result.value, undefined, 'Final result `value`');
assert.sameValue(result.done, true, 'Final result `done` flag');