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// 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
description: >
Set values with negative start argument.
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.
...
22.1.3.3 Array.prototype.copyWithin (target, start [ , end ] )
...
6. If relativeStart < 0, let from be max((len + relativeStart), 0); else let
from be min(relativeStart, len).
...
includes: [compareArray.js, testBigIntTypedArray.js]
---*/
testWithBigIntTypedArrayConstructors(function(TA) {
assert(
compareArray(
new TA(convertToBigInt([0, 1, 2, 3])).copyWithin(0, -1),
convertToBigInt([3, 1, 2, 3])
),
'[0, 1, 2, 3].copyWithin(0, -1) -> [3, 1, 2, 3]'
);
assert(
compareArray(
new TA(convertToBigInt([0, 1, 2, 3, 4])).copyWithin(2, -2),
convertToBigInt([0, 1, 3, 4, 4])
),
'[0, 1, 2, 3, 4].copyWithin(2, -2) -> [0, 1, 3, 4, 4]'
);
assert(
compareArray(
new TA(convertToBigInt([0, 1, 2, 3, 4])).copyWithin(1, -2),
convertToBigInt([0, 3, 4, 3, 4])
),
'[0, 1, 2, 3, 4].copyWithin(1, -2) -> [0, 3, 4, 3, 4]'
);
assert(
compareArray(
new TA(convertToBigInt([0, 1, 2, 3])).copyWithin(-1, -2),
convertToBigInt([0, 1, 2, 2])
),
'[0, 1, 2, 3].copyWithin(-1, -2) -> [ 0, 1, 2, 2 ]'
);
assert(
compareArray(
new TA(convertToBigInt([0, 1, 2, 3, 4])).copyWithin(-2, -3),
convertToBigInt([0, 1, 2, 2, 3])
),
'[0, 1, 2, 3, 4].copyWithin(-2, -3) -> [0, 1, 2, 2, 3]'
);
assert(
compareArray(
new TA(convertToBigInt([0, 1, 2, 3, 4])).copyWithin(-5, -2),
convertToBigInt([3, 4, 2, 3, 4])
),
'[0, 1, 2, 3, 4].copyWithin(-5, -2) -> [3, 4, 2, 3, 4]'
);
});
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