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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/use-default-proto-if-custom-proto-is-not-object.js | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/use-default-proto-if-custom-proto-is-not-object.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/use-default-proto-if-custom-proto-is-not-object.js new file mode 100644 index 0000000000..6617e5c899 --- /dev/null +++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/use-default-proto-if-custom-proto-is-not-object.js @@ -0,0 +1,45 @@ +// 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-length +description: > + Use prototype from %TypedArray% if newTarget's prototype is not an Object +info: | + 22.2.4.2 TypedArray ( length ) + + This description applies only if the TypedArray function is called with at + least one argument and the Type of the first argument is not Object. + + ... + 8. Return ? AllocateTypedArray(constructorName, NewTarget, + %TypedArrayPrototype%, elementLength). + + 22.2.4.2.1 Runtime Semantics: AllocateTypedArray (constructorName, newTarget, + defaultProto [ , length ]) + + 1. Let proto be ? GetPrototypeFromConstructor(newTarget, defaultProto). + 2. Let obj be IntegerIndexedObjectCreate (proto, «[[ViewedArrayBuffer]], + [[TypedArrayName]], [[ByteLength]], [[ByteOffset]], [[ArrayLength]]» ). + ... + + 9.4.5.7 IntegerIndexedObjectCreate (prototype, internalSlotsList) + + ... + 10. Set the [[Prototype]] internal slot of A to prototype. + ... + 12. Return A. +includes: [testTypedArray.js] +features: [TypedArray] +---*/ + +function newTarget() {} +newTarget.prototype = null; + +testWithTypedArrayConstructors(function(TA) { + var ta = Reflect.construct(TA, [1], newTarget); + + assert.sameValue(ta.constructor, TA); + assert.sameValue(Object.getPrototypeOf(ta), TA.prototype); +}); + +reportCompare(0, 0); |