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Diffstat (limited to 'js/src/tests/test262/built-ins/Array/prototype/slice/create-species-neg-zero.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Array/prototype/slice/create-species-neg-zero.js | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/slice/create-species-neg-zero.js b/js/src/tests/test262/built-ins/Array/prototype/slice/create-species-neg-zero.js new file mode 100644 index 0000000000..7ad5e272da --- /dev/null +++ b/js/src/tests/test262/built-ins/Array/prototype/slice/create-species-neg-zero.js @@ -0,0 +1,47 @@ +// 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-array.prototype.slice +description: The value `-0` is converted to `0` +info: | + [...] + 3. Let relativeStart be ? ToInteger(start). + 4. If relativeStart < 0, let k be max((len + relativeStart), 0); else let k + be min(relativeStart, len). + 5. If end is undefined, let relativeEnd be len; else let relativeEnd be ? + ToInteger(end). + 6. If relativeEnd < 0, let final be max((len + relativeEnd), 0); else let + final be min(relativeEnd, len). + 7. Let count be max(final - k, 0). + 8. Let A be ? ArraySpeciesCreate(O, count). + [...] + + 9.4.2.3 ArraySpeciesCreate + + [...] + 2. If length is -0, let length be +0. + [...] + 5. Let C be ? Get(originalArray, "constructor"). + [...] + 7. If Type(C) is Object, then + a. Let C be ? Get(C, @@species). + b. If C is null, let C be undefined. + [...] + 10. Return ? Construct(C, « length »). +features: [Symbol.species] +---*/ + +var args; +var Ctor = function() { + args = arguments; +}; +var a = []; +a.constructor = {}; +a.constructor[Symbol.species] = Ctor; + +a.slice(0, -0); + +assert.sameValue(args.length, 1); +assert.sameValue(args[0], 0); + +reportCompare(0, 0); |