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// |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: >
If thisArg is a primitive, mapfn is called with a wrapper this-value or the
global, according to the usual rules of sloppy mode
info: |
6. If _mapping_ is *true*, then
a. Let _mappedValue_ be Call(_mapfn_, _thisArg_, « _nextValue_, 𝔽(_k_) »).
OrdinaryCallBindThis, when _F_.[[ThisMode]] is ~global~, where _F_ is the
function object:
6. Else,
a. If _thisArgument_ is *undefined* or *null*, then
i. Let _globalEnv_ be _calleeRealm_.[[GlobalEnv]].
ii. Assert: _globalEnv_ is a Global Environment Record.
iii. Let _thisValue_ be _globalEnv_.[[GlobalThisValue]].
b. Else,
i. Let _thisValue_ be ! ToObject(_thisArgument_).
ii. NOTE: ToObject produces wrapper objects using _calleeRealm_.
flags: [async, noStrict]
includes: [asyncHelpers.js]
features: [Array.fromAsync]
---*/
asyncTest(async () => {
await Array.fromAsync([1, 2, 3], async function () {
assert.sameValue(
this,
globalThis,
"the global should be bound as the this-value of mapfn when thisArg is undefined"
);
}, undefined);
await Array.fromAsync([1, 2, 3], async function () {
assert.sameValue(
this,
globalThis,
"the global should be bound as the this-value of mapfn when thisArg is null"
);
}, null);
await Array.fromAsync([1, 2, 3], async function () {
assert.notSameValue(this, "string", "string thisArg should not be bound as the this-value of mapfn");
assert.sameValue(typeof this, "object", "a String wrapper object should be bound as the this-value of mapfn when thisArg is a string")
assert.sameValue(this.valueOf(), "string", "String wrapper object should have the same primitive value as thisArg");
}, "string");
await Array.fromAsync([1, 2, 3], async function () {
assert.notSameValue(this, 3.1416, "number thisArg should be not bound as the this-value of mapfn");
assert.sameValue(typeof this, "object", "a Number wrapper object should be bound as the this-value of mapfn when thisArg is a number")
assert.sameValue(this.valueOf(), 3.1416, "Number wrapper object should have the same primitive value as thisArg");
}, 3.1416);
await Array.fromAsync([1, 2, 3], async function () {
assert.notSameValue(this, 42n, "bigint thisArg should not be bound as the this-value of mapfn");
assert.sameValue(typeof this, "object", "a BigInt wrapper object should be bound as the this-value of mapfn when thisArg is a bigint")
assert.sameValue(this.valueOf(), 42n, "BigInt wrapper object should have the same primitive value as thisArg");
}, 42n);
await Array.fromAsync([1, 2, 3], async function () {
assert.notSameValue(this, true, "boolean thisArg should not be bound as the this-value of mapfn");
assert.sameValue(typeof this, "object", "a Boolean wrapper object should be bound as the this-value of mapfn when thisArg is a boolean")
assert.sameValue(this.valueOf(), true, "Boolean wrapper object should have the same primitive value as thisArg");
}, true);
const symbolThis = Symbol("symbol");
await Array.fromAsync([1, 2, 3], async function () {
assert.notSameValue(this, symbolThis, "symbol thisArg should not be bound as the this-value of mapfn");
assert.sameValue(typeof this, "object", "a Symbol wrapper object should be bound as the this-value of mapfn when thisArg is a symbol")
assert.sameValue(this.valueOf(), symbolThis, "Symbol wrapper object should have the same primitive value as thisArg");
}, symbolThis);
});
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