mirror of https://github.com/tc39/test262.git
44 lines
1.2 KiB
JavaScript
44 lines
1.2 KiB
JavaScript
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// Copyright (C) 2023 Igalia, S.L. 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-array.fromasync
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description: >
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Closes an async iterator if setting an element fails on an instance of a
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custom this-value
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info: |
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3.j.ii.8. Let _defineStatus_ be CreateDataPropertyOrThrow(_A_, _Pk_, _mappedValue_).
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9. If _defineStatus_ is an abrupt completion, return ? AsyncIteratorClose(_iteratorRecord_, _defineStatus_).
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includes: [asyncHelpers.js]
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flags: [async]
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features: [Array.fromAsync]
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---*/
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asyncTest(async function () {
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function MyArray() {
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Object.defineProperty(this, 0, {
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enumerable: true,
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writable: true,
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configurable: false,
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value: 0
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});
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}
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let closed = false;
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const iterator = {
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next() {
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return Promise.resolve({ value: 1, done: false });
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},
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return() {
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closed = true;
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return Promise.resolve({ done: true });
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},
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[Symbol.asyncIterator]() {
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return this;
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}
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}
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await assert.throwsAsync(TypeError, () => Array.fromAsync.call(MyArray, iterator), "Promise rejected if defining element fails");
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assert(closed, "element define failure should close iterator");
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});
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