mirror of https://github.com/tc39/test262.git
26 lines
662 B
JavaScript
26 lines
662 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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Sync-iterable input with mapfn awaits each input once with sync mapping callback
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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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const expectedValue = {};
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let awaitCounter = 0;
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const inputThenable = {
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then (resolve, reject) {
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awaitCounter++;
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resolve(expectedValue);
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},
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};
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const input = [ inputThenable ].values();
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await Array.fromAsync(input, v => v);
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assert.sameValue(awaitCounter, 1);
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});
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