mirror of https://github.com/tc39/test262.git
65 lines
1.3 KiB
JavaScript
65 lines
1.3 KiB
JavaScript
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// Copyright (C) 2019 André Bargull. 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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description: >
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Abrupt completion when calling IteratorValue is propagated when received.[[Type]] is throw.
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info: |
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14.4.14 Runtime Semantics: Evaluation
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YieldExpression : yield* AssignmentExpression
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...
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7. Repeat,
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...
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b. Else if received.[[Type]] is throw, then
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...
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ii. If throw is not undefined, then
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...
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7. If generatorKind is async, then set received to AsyncGeneratorYield(? IteratorValue(innerResult)).
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...
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flags: [async]
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features: [async-iteration]
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---*/
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var token = {};
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var asyncIter = {
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[Symbol.asyncIterator]() {
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return this;
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},
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next() {
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return {
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done: false,
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value: undefined,
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};
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},
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throw() {
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return {
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done: false,
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get value() {
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throw token;
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}
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};
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}
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};
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async function* f() {
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var thrown;
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try {
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yield* asyncIter;
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} catch (e) {
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thrown = e;
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}
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return thrown;
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}
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var iter = f();
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iter.next().then(() => {
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iter.throw().then(({value}) => {
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assert.sameValue(value, token);
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}).then($DONE, $DONE);
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}).catch($DONE);
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