test262/test/built-ins/Array/fromAsync/non-iterable-with-thenable-sync-mapped-awaits-once.js
Aditi f756ff63c8
Add some Array.from async tests (#3791)
This PR adds some more tests for Array.fromAsync proposal.
It includes most of the tests defined in https://github.com/es-shims/array-from-async/blob/main/test.mjs

See:#3725
2023-04-07 16:47:19 -07:00

29 lines
676 B
JavaScript

// Copyright (C) 2023 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-array.fromasync
description: >
Non-iterable input with thenables awaits each input once with mapping callback
includes: [asyncHelpers.js]
flags: [async]
features: [Array.fromAsync]
---*/
asyncTest(async function () {
const expectedValue = {};
let awaitCounter = 0;
const inputThenable = {
then (resolve, reject) {
awaitCounter++;
resolve(expectedValue);
},
};
const input = {
length: 1,
0: inputThenable,
};
await Array.fromAsync(input, v => v);
assert.sameValue(awaitCounter, 1);
});