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// Copyright (C) 2021 Chengzhong Wu. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-%typedarray%.prototype.copywithin
description: >
copyWithin should respect typedarray's byteOffset
info: |
22.2.3.5%TypedArray%.prototype.copyWithin ( target, start [ , end ] )
...
17. If count > 0, then
e. Let elementSize be the Element Size value specified in Table 72 for typedArrayName.
f. Let byteOffset be O.[[ByteOffset]].
g. Let toByteIndex be to × elementSize + byteOffset.
h. Let fromByteIndex be from × elementSize + byteOffset.
...
includes: [testTypedArray.js, compareArray.js]
features: [TypedArray]
---*/
testWithTypedArrayConstructors(function(TA) {
var ta = new TA([0, 1, 2, 3]);
assert.compareArray(
new TA(ta.buffer, TA.BYTES_PER_ELEMENT).copyWithin(2, 0),
[1, 2, 1],
'copyWithin should respect typedarray\'s byteOffset'
);
assert.compareArray(
ta,
[0, 1, 2, 1],
'underlying arraybuffer should have been updated'
);
});
reportCompare(0, 0);
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