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Here are some of the standard tests for property metadata of the Array.fromAsync property and for the built-in function object. These don't require doing anything asynchronously, so can be considered separately from the Async Helpers RFC.
37 lines
1.3 KiB
JavaScript
37 lines
1.3 KiB
JavaScript
// Copyright (C) 2022 Igalia, S.L. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-array.fromasync
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description: Array.fromAsync meets the requirements for built-in objects
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info: |
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Unless specified otherwise, a built-in object that is callable as a function
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is a built-in function object with the characteristics described in 10.3.
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Unless specified otherwise, the [[Extensible]] internal slot of a built-in
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object initially has the value *true*.
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Unless otherwise specified every built-in function and every built-in
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constructor has the Function prototype object, which is the initial value of
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the expression Function.prototype (20.2.3), as the value of its [[Prototype]]
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internal slot.
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Built-in functions that are not constructors do not have a "prototype"
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property unless otherwise specified in the description of a particular
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function.
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features: [Array.fromAsync]
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---*/
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assert(Object.isExtensible(Array.fromAsync), "Array.fromAsync is extensible");
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assert.sameValue(
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Object.getPrototypeOf(Array.fromAsync),
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Function.prototype,
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"Prototype of Array.fromAsync is Function.prototype"
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);
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assert.sameValue(
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Object.getOwnPropertyDescriptor(Array.fromAsync, "prototype"),
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undefined,
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"Array.fromAsync has no own prototype property"
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);
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