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* Update two constructor tests of Array.fromAsync * Remove extra comment --------- Co-authored-by: Rezvan Mahdavi Hezaveh <rezvan@chromium.org>
53 lines
1.9 KiB
JavaScript
53 lines
1.9 KiB
JavaScript
// Copyright (C) 2023 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: >
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Constructs the this-value once if asyncItems is iterable, twice if not, and
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length and element properties are set correctly on the result
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info: |
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3.e. If IsConstructor(_C_) is *true*, then
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i. Let _A_ be ? Construct(_C_).
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...
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j. If _iteratorRecord_ is not *undefined*, then
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...
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k. Else,
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...
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iv. If IsConstructor(_C_) is *true*, then
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1. Let _A_ be ? Construct(_C_, « 𝔽(_len_) »).
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includes: [compareArray.js, asyncHelpers.js]
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flags: [async]
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features: [Array.fromAsync]
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---*/
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asyncTest(async function () {
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const constructorCalls = [];
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function MyArray(...args) {
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constructorCalls.push(args);
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}
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let result = await Array.fromAsync.call(MyArray, [1, 2]);
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assert(result instanceof MyArray, "result is an instance of the constructor this-value");
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assert.sameValue(result.length, 2, "length is set on result");
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assert.sameValue(result[0], 1, "element 0 is set on result");
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assert.sameValue(result[1], 2, "element 1 is set on result");
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assert.sameValue(constructorCalls.length, 1, "constructor is called once");
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assert.compareArray(constructorCalls[0], [], "constructor is called with no arguments");
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constructorCalls.splice(0); // reset
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result = await Array.fromAsync.call(MyArray, {
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length: 2,
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0: 1,
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1: 2
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});
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assert(result instanceof MyArray, "result is an instance of the constructor this-value");
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assert.sameValue(result.length, 2, "length is set on result");
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assert.sameValue(result[0], 1, "element 0 is set on result");
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assert.sameValue(result[1], 2, "element 1 is set on result");
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assert.sameValue(constructorCalls.length, 1, "constructor is called once");
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assert.compareArray(constructorCalls[0], [2], "constructor is called with a length argument");
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});
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