mirror of https://github.com/tc39/test262.git
34 lines
959 B
JavaScript
34 lines
959 B
JavaScript
// 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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Rejects the promise if setting the length fails on an instance of a custom
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this-value
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info: |
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3.j.ii.4.a. Perform ? Set(_A_, *"length"*, 𝔽(_k_), *true*).
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...
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3.k.viii. Perform ? Set(_A_, *"length"*, 𝔽(_len_), *true*)
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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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class MyArray {
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set length(v) {
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throw new Test262Error("setter of length property throws")
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}
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}
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await assert.throwsAsync(Test262Error, () => Array.fromAsync.call(MyArray, [0, 1, 2]), "Promise rejected if setting length fails");
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await assert.throwsAsync(Test262Error, () => Array.fromAsync.call(MyArray, {
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length: 3,
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0: 0,
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1: 1,
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2: 2
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}), "Promise rejected if setting length from array-like fails");
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});
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