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Diffstat (limited to 'js/src/tests/test262/built-ins/Array/prototype/copyWithin/negative-start.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Array/prototype/copyWithin/negative-start.js | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/copyWithin/negative-start.js b/js/src/tests/test262/built-ins/Array/prototype/copyWithin/negative-start.js new file mode 100644 index 0000000000..9bed566c60 --- /dev/null +++ b/js/src/tests/test262/built-ins/Array/prototype/copyWithin/negative-start.js @@ -0,0 +1,47 @@ +// Copyright (C) 2015 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +esid: sec-array.prototype.copywithin +description: > + Set values with negative start argument. +info: | + 22.1.3.3 Array.prototype.copyWithin (target, start [ , end ] ) + + ... + 10. If relativeStart < 0, let from be max((len + relativeStart),0); else let + from be min(relativeStart, len). + ... +includes: [compareArray.js] +---*/ + +assert.compareArray( + [0, 1, 2, 3].copyWithin(0, -1), [3, 1, 2, 3], + '[0, 1, 2, 3].copyWithin(0, -1) must return [3, 1, 2, 3]' +); + +assert.compareArray( + [0, 1, 2, 3, 4].copyWithin(2, -2), [0, 1, 3, 4, 4], + '[0, 1, 2, 3, 4].copyWithin(2, -2) must return [0, 1, 3, 4, 4]' +); + +assert.compareArray( + [0, 1, 2, 3, 4].copyWithin(1, -2), [0, 3, 4, 3, 4], + '[0, 1, 2, 3, 4].copyWithin(1, -2) must return [0, 3, 4, 3, 4]' +); + +assert.compareArray( + [0, 1, 2, 3].copyWithin(-1, -2), [0, 1, 2, 2], + '[0, 1, 2, 3].copyWithin(-1, -2) must return [0, 1, 2, 2]' +); + +assert.compareArray( + [0, 1, 2, 3, 4].copyWithin(-2, -3), [0, 1, 2, 2, 3], + '[0, 1, 2, 3, 4].copyWithin(-2, -3) must return [0, 1, 2, 2, 3]' +); + +assert.compareArray( + [0, 1, 2, 3, 4].copyWithin(-5, -2), [3, 4, 2, 3, 4], + '[0, 1, 2, 3, 4].copyWithin(-5, -2) must return [3, 4, 2, 3, 4]' +); + +reportCompare(0, 0); |