1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-%typedarray%.prototype.copywithin
es6id: 22.2.3.5
description: >
Copy values with non-negative target and start positions.
info: |
22.2.3.5 %TypedArray%.prototype.copyWithin (target, start [ , end ] )
%TypedArray%.prototype.copyWithin is a distinct function that implements the
same algorithm as Array.prototype.copyWithin as defined in 22.1.3.3 except
that the this object's [[ArrayLength]] internal slot is accessed in place of
performing a [[Get]] of "length" and the actual copying of values in step 12
must be performed in a manner that preserves the bit-level encoding of the
source data.
...
includes: [compareArray.js, testTypedArray.js]
---*/
testWithTypedArrayConstructors(function(TA, N) {
assert(
compareArray(
new TA(N([1, 2, 3, 4, 5, 6])).copyWithin(0, 0),
N([1, 2, 3, 4, 5, 6])
)
);
assert(
compareArray(
new TA(N([1, 2, 3, 4, 5, 6])).copyWithin(0, 2),
N([3, 4, 5, 6, 5, 6])
)
);
assert(
compareArray(
new TA(N([1, 2, 3, 4, 5, 6])).copyWithin(3, 0),
N([1, 2, 3, 1, 2, 3])
)
);
assert(
compareArray(
new TA(N([0, 1, 2, 3, 4, 5])).copyWithin(1, 4),
N([0, 4, 5, 3, 4, 5])
)
);
});
|
