mirror of https://github.com/tc39/test262.git
57 lines
1.4 KiB
JavaScript
57 lines
1.4 KiB
JavaScript
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// Copyright (C) 2016 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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esid: sec-generator-function-definitions-runtime-semantics-evaluation
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es6id: 14.4.14
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description: >
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Abrupt completion returned when accessing `value` property of iteration
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result
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info: |
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YieldExpression : yield * AssignmentExpression
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1. Let exprRef be the result of evaluating AssignmentExpression.
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2. Let value be ? GetValue(exprRef).
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3. Let iterator be ? GetIterator(value).
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4. Let received be NormalCompletion(undefined).
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5. Repeat
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a. If received.[[Type]] is normal, then
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i. Let innerResult be ? IteratorNext(iterator, received.[[Value]]).
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ii. Let done be ? IteratorComplete(innerResult).
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iii. If done is true, then
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1. Return ? IteratorValue(innerResult).
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7.4.4 IteratorValue
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1. Assert: Type(iterResult) is Object.
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2. Return ? Get(iterResult, "value").
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features: [Symbol.iterator]
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---*/
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var thrown = new Test262Error();
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var badIter = {};
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var poisonedValue = Object.defineProperty({ done: true }, 'value', {
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get: function() {
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throw thrown;
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}
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});
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badIter[Symbol.iterator] = function() {
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return {
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next: function() {
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return poisonedValue;
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}
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};
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};
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function* g() {
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try {
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yield * badIter;
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} catch (err) {
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caught = err;
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}
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}
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var iter = g();
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var result, caught;
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result = iter.next();
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assert.sameValue(caught, thrown);
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