src/dstr-assignment/obj-prop-elem-target-yield-expr.case


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36

// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
desc: >
    When a `yield` token appears within the DestructuringAssignmentTarget of an
    AssignmentElement and within a generator function body, it should behave as
    a YieldExpression.
template: default
es6id: 12.14.5.4
features: [generators]
---*/

//- setup
var x = {};
var iterationResult, iter;

iter = (function*() {
//- elems
{ x: x[yield] }
//- vals
{ x: 23 }
//- teardown
}());

iterationResult = iter.next();

assert.sameValue(iterationResult.value, undefined);
assert.sameValue(iterationResult.done, false);
assert.sameValue(x.prop, undefined);

iterationResult = iter.next('prop');

assert.sameValue(iterationResult.value, undefined);
assert.sameValue(iterationResult.done, true);
assert.sameValue(x.prop, 23);