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// |reftest| shell-option(--enable-change-array-by-copy) skip-if(!Array.prototype.with||!xulRuntime.shell) -- change-array-by-copy is not enabled unconditionally, requires shell-options
// Copyright (C) 2021 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-%typedarray%.prototype.with
description: >
%TypedArray%.prototype.with reads the TypedArray length ignoring the .length property
info: |
%TypedArray%.prototype.with ( index, value )
...
3. Let len be O.[[ArrayLength]].
...
includes: [testTypedArray.js, compareArray.js]
features: [TypedArray, change-array-by-copy]
---*/
testWithTypedArrayConstructors(TA => {
var ta = new TA([3, 1, 2]);
Object.defineProperty(ta, "length", { value: 2 })
var res = ta.with(0, 0);
assert.compareArray(res, [0, 1, 2]);
assert.sameValue(res.length, 3);
ta = new TA([3, 1, 2]);
Object.defineProperty(ta, "length", { value: 5 });
res = ta.with(0, 0);
assert.compareArray(res, [0, 1, 2]);
assert.sameValue(res.length, 3);
});
function setLength(length) {
Object.defineProperty(TypedArray.prototype, "length", {
get: () => length,
});
}
testWithTypedArrayConstructors(TA => {
var ta = new TA([3, 1, 2]);
setLength(2);
var res = ta.with(0, 0);
setLength(3);
assert.compareArray(res, [0, 1, 2]);
setLength(5);
res = ta.with(0, 0);
setLength(3);
assert.compareArray(res, [0, 1, 2]);
});
reportCompare(0, 0);
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