mirror of https://github.com/tc39/test262.git
41 lines
1.1 KiB
JavaScript
41 lines
1.1 KiB
JavaScript
// Copyright (C) 2013 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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es6id: 25.2
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description: >
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When an iterator is the operand of a `yield *` expression, the generator
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should produce an iterator that visits each iterated item.
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features: [generators, Symbol.iterator]
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---*/
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var results = [{ value: 1 }, { value: 8 }, { value: 34, done: true }];
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var idx = 0;
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var iterator = {};
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var iterable = {
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next: function() {
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var result = results[idx];
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idx += 1;
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return result;
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}
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};
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iterator[Symbol.iterator] = function() {
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return iterable;
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};
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function* g() {
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yield* iterator;
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}
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var iter = g();
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var result;
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result = iter.next();
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assert.sameValue(result.value, 1, 'First result `value`');
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assert.sameValue(result.done, undefined, 'First result `done` flag');
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result = iter.next();
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assert.sameValue(result.value, 8, 'Third result `value`');
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assert.sameValue(result.done, undefined, 'Third result `done` flag');
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result = iter.next();
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assert.sameValue(result.value, undefined, 'Final result `value`');
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assert.sameValue(result.done, true, 'Final result `done` flag');
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