diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/Array/prototype/with/index-negative.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Array/prototype/with/index-negative.js | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/with/index-negative.js b/js/src/tests/test262/built-ins/Array/prototype/with/index-negative.js new file mode 100644 index 0000000000..d9b8a8eaac --- /dev/null +++ b/js/src/tests/test262/built-ins/Array/prototype/with/index-negative.js @@ -0,0 +1,29 @@ +// Copyright (C) 2021 Igalia, S.L. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-array.prototype.with +description: > + Array.prototype.with adds length to index if it's negative. +info: | + Array.prototype.with ( index, value ) + + ... + 2. Let len be ? LengthOfArrayLike(O). + 3. Let relativeIndex be ? ToIntegerOrInfinity(index). + 4. If index >= 0, let actualIndex be relativeIndex. + 5. Else, let actualIndex be len + relativeIndex. + ... +features: [change-array-by-copy] +includes: [compareArray.js] +---*/ + +var arr = [0, 1, 2]; + +assert.compareArray(arr.with(-1, 4), [0, 1, 4]); +assert.compareArray(arr.with(-3, 4), [4, 1, 2]); + +// -0 is not < 0 +assert.compareArray(arr.with(-0, 4), [4, 1, 2]); + +reportCompare(0, 0); |