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Diffstat (limited to 'js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/new-instance-extensibility.js')
-rw-r--r-- | js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/new-instance-extensibility.js | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/new-instance-extensibility.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/new-instance-extensibility.js new file mode 100644 index 0000000000..59d5efba90 --- /dev/null +++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/new-instance-extensibility.js @@ -0,0 +1,48 @@ +// 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-typedarray +description: > + The new typedArray instance from a typedArray argument is extensible +info: | + 22.2.4.3 TypedArray ( typedArray ) + + ... + 4. Let O be ? AllocateTypedArray(constructorName, NewTarget, + "%TypedArrayPrototype%"). + ... + + 22.2.4.2.1 Runtime Semantics: AllocateTypedArray (constructorName, newTarget, + defaultProto [ , length ]) + + ... + 2. Let obj be IntegerIndexedObjectCreate(proto, « [[ViewedArrayBuffer]], + [[TypedArrayName]], [[ByteLength]], [[ByteOffset]], [[ArrayLength]] »). + ... + + 9.4.5.7 IntegerIndexedObjectCreate (prototype, internalSlotsList) + + ... + 11. Set the [[Extensible]] internal slot of A to true. + ... +includes: [testTypedArray.js] +features: [TypedArray] +---*/ + +var typedArraySample1 = new Int8Array(); +var typedArraySample2 = new Int8Array(); +Object.preventExtensions(typedArraySample2); + +testWithTypedArrayConstructors(function(TA) { + var sample1 = new TA(typedArraySample1); + + assert(Object.isExtensible(sample1), "new instance is extensible"); + + var sample2 = new TA(typedArraySample2); + assert( + Object.isExtensible(sample2), + "new instance does not inherit extensibility from typedarray argument" + ); +}); + +reportCompare(0, 0); |