src/dstr-assignment/array-elem-target-yield-expr.case

// 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 within a generator function body, it behaves as a
    YieldExpression.
template: default
es6id: 12.14.5.4
features: [generators]
---*/

//- setup
var value = [33];
var x = {};
var iterationResult, iter;

iter = (function*() {
//- elems
[ x[yield] ]
//- vals
[33]
//- 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, 33);