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Diffstat (limited to 'test/built-ins/TypedArrays/ctors/typedarray-arg/typedarray-arg-other-ctor-buffer-ctor-custom-species-proto-from-ctor-realm.js')
-rw-r--r-- | test/built-ins/TypedArrays/ctors/typedarray-arg/typedarray-arg-other-ctor-buffer-ctor-custom-species-proto-from-ctor-realm.js | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/test/built-ins/TypedArrays/ctors/typedarray-arg/typedarray-arg-other-ctor-buffer-ctor-custom-species-proto-from-ctor-realm.js b/test/built-ins/TypedArrays/ctors/typedarray-arg/typedarray-arg-other-ctor-buffer-ctor-custom-species-proto-from-ctor-realm.js new file mode 100644 index 000000000..03860d1a7 --- /dev/null +++ b/test/built-ins/TypedArrays/ctors/typedarray-arg/typedarray-arg-other-ctor-buffer-ctor-custom-species-proto-from-ctor-realm.js @@ -0,0 +1,59 @@ +// 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: > + Derive the ArrayBuffer prototype from the realm of the species constructor +info: | + 22.2.4.3 TypedArray ( typedArray ) + + This description applies only if the TypedArray function is called with at + least one argument and the Type of the first argument is Object and that + object has a [[TypedArrayName]] internal slot. + + ... + 18. Else, + a. Let bufferConstructor be ? SpeciesConstructor(srcData, %ArrayBuffer%). + b. Let data be ? AllocateArrayBuffer(bufferConstructor, byteLength). + ... + + 7.3.20 SpeciesConstructor ( O, defaultConstructor ) + + ... + 5. Let S be ? Get(C, @@species). + 6. If S is either undefined or null, return defaultConstructor. + 7. If IsConstructor(S) is true, return S. + ... + + 9.1.14 GetPrototypeFromConstructor + + ... + 3. Let proto be ? Get(constructor, "prototype"). + 4. If Type(proto) is not Object, then + a. Let realm be ? GetFunctionRealm(constructor). + b. Let proto be realm's intrinsic object named intrinsicDefaultProto. + ... +includes: [testTypedArray.js] +features: [cross-realm, Symbol.species, TypedArray] +---*/ + +var sample1 = new Int8Array(); +var sample2 = new Int16Array(); +var other = $262.createRealm().global; +var C = new other.Function(); +C.prototype = null; + + +testWithTypedArrayConstructors(function(TA) { + var sample = TA === Int8Array ? sample2 : sample1; + var ctor = {}; + + sample.buffer.constructor = ctor; + + ctor[Symbol.species] = C; + + var typedArray = new TA(sample); + assert.sameValue( + Object.getPrototypeOf(typedArray.buffer), other.ArrayBuffer.prototype + ); +}); |