1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
// |reftest| shell-option(--enable-array-from-async) skip-if(!Array.fromAsync||!xulRuntime.shell) async -- Array.fromAsync is not enabled unconditionally, requires shell-options
'use strict';
// 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: >
If thisArg is a primitive, mapfn is called with it as the this-value in strict
mode
info: |
6. If _mapping_ is *true*, then
a. Let _mappedValue_ be Call(_mapfn_, _thisArg_, « _nextValue_, 𝔽(_k_) »).
In OrdinaryCallBindThis, _thisArgument_ is always bound as the this-value in
strict mode (_F_.[[ThisMode]] is ~strict~, where _F_ is the function object.)
flags: [async, onlyStrict]
includes: [asyncHelpers.js]
features: [Array.fromAsync]
---*/
asyncTest(async () => {
await Array.fromAsync([1, 2, 3], async function () {
assert.sameValue(this, undefined, "undefined thisArg should be bound as the this-value of mapfn");
}, undefined);
await Array.fromAsync([1, 2, 3], async function () {
assert.sameValue(this, null, "null thisArg should be bound as the this-value of mapfn");
}, null);
await Array.fromAsync([1, 2, 3], async function () {
assert.sameValue(this, "string", "string thisArg should be bound as the this-value of mapfn");
}, "string");
await Array.fromAsync([1, 2, 3], async function () {
assert.sameValue(this, 3.1416, "number thisArg should be bound as the this-value of mapfn");
}, 3.1416);
await Array.fromAsync([1, 2, 3], async function () {
assert.sameValue(this, 42n, "bigint thisArg should be bound as the this-value of mapfn");
}, 42n);
await Array.fromAsync([1, 2, 3], async function () {
assert.sameValue(this, true, "boolean thisArg should be bound as the this-value of mapfn");
}, true);
const symbolThis = Symbol("symbol");
await Array.fromAsync([1, 2, 3], async function () {
assert.sameValue(this, symbolThis, "symbol thisArg should be bound as the this-value of mapfn");
}, symbolThis);
});
|