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


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// 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 Initializer 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 = [];
var iterationResult, iter, x;
iter = (function*() {
//- elems
[ x = yield ]
//- vals
[]
//- teardown
})();

iterationResult = iter.next();

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

iterationResult = iter.next(86);

assert.sameValue(iterationResult.value, undefined);
assert.sameValue(iterationResult.done, true);
assert.sameValue(x, 86);