diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/TypedArrayConstructors/internals/DefineOwnProperty/key-is-minus-zero.js')
-rw-r--r-- | js/src/tests/test262/built-ins/TypedArrayConstructors/internals/DefineOwnProperty/key-is-minus-zero.js | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/DefineOwnProperty/key-is-minus-zero.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/DefineOwnProperty/key-is-minus-zero.js new file mode 100644 index 0000000000..970eb231eb --- /dev/null +++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/DefineOwnProperty/key-is-minus-zero.js @@ -0,0 +1,38 @@ +// 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-integer-indexed-exotic-objects-defineownproperty-p-desc +description: > + Returns false if numericIndex is "-0" +info: | + 9.4.5.3 [[DefineOwnProperty]] ( P, Desc) + ... + 3. If Type(P) is String, then + a. Let numericIndex be ! CanonicalNumericIndexString(P). + b. If numericIndex is not undefined, then + i. If IsInteger(numericIndex) is false, return false. + ii. Let intIndex be numericIndex. + iii. If intIndex = -0, return false. + ... +includes: [testTypedArray.js] +features: [Reflect, TypedArray] +---*/ + +testWithTypedArrayConstructors(function(TA) { + var sample = new TA(2); + + assert.sameValue( + Reflect.defineProperty(sample, "-0", { + value: 42, + configurable: false, + enumerable: true, + writable: true + }), + false, + "defineProperty returns false" + ); + assert.sameValue(sample[0], 0, "does not change the value for [0]"); + assert.sameValue(sample["-0"], undefined, "does define a value for ['-0']"); +}); + +reportCompare(0, 0); |