js/src/tests/test262/built-ins/Array/fromAsync/asyncitems-null-undefined.js


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19

// |reftest| shell-option(--enable-array-from-async) skip-if(!Array.fromAsync||!xulRuntime.shell) async -- Array.fromAsync is not enabled unconditionally, requires shell-options
// Copyright (C) 2022 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.fromAsync rejects with a TypeError if the asyncItems argument is null or undefined
info: |
  3.c. Let usingAsyncIterator be ? GetMethod(asyncItems, @@asyncIterator).
includes: [asyncHelpers.js]
flags: [async]
features: [Array.fromAsync]
---*/

asyncTest(async function () {
  await assert.throwsAsync(TypeError, () => Array.fromAsync(null), "null asyncItems");
  await assert.throwsAsync(TypeError, () => Array.fromAsync(undefined), "undefined asyncItems");
});