mirror of
https://github.com/tc39/test262.git
synced 2025-05-26 01:30:28 +02:00
92500bfffb
This contains a few more tests for Array.fromAsync, in addition to what has already been merged and what is under review at #3791. This covers the following items from the testing plan at #3725: - Success cases - Creates promise - Create new array/arraylike in promise (with length = length property) - Input - Invalid input values - nonconforming object (arraylike without length, missing keys) - Covered by polyfill tests - Result promise rejects if length access fails (non-iterable input) - Unaffected by globalThis.Symbol mutation (non-iterable) - this-value - this-value is a constructor - this-value is not a constructor - If this is a constructor, and items doesn't have a Symbol.iterator, returns a new instance of this - Iterator closed when property creation on this fails - Returned promise rejects when ^ - Other tests - Error is thrown for all CreateDataProperty fails - Non-writable properties are overwritten by CreateDataProperty - Input with missing values Co-authored-by: Ms2ger <Ms2ger@igalia.com>
25 lines
719 B
JavaScript
25 lines
719 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: Array-like object with holes treats the holes as undefined
|
|
info: |
|
|
3.k.vii.2. Let _kValue_ be ? Get(_arrayLike_, _Pk_).
|
|
features: [Array.fromAsync]
|
|
flags: [async]
|
|
includes: [asyncHelpers.js, compareArray.js]
|
|
---*/
|
|
|
|
asyncTest(async function () {
|
|
const arrayLike = Object.create(null);
|
|
arrayLike.length = 5;
|
|
arrayLike[0] = 0;
|
|
arrayLike[1] = 1;
|
|
arrayLike[2] = 2;
|
|
arrayLike[4] = 4;
|
|
|
|
const array = await Array.fromAsync(arrayLike);
|
|
assert.compareArray(array, [0, 1, 2, undefined, 4], "holes in array-like treated as undefined");
|
|
});
|