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Diffstat (limited to 'test/built-ins/TypedArrays/ctors-bigint/typedarray-arg/typedarray-arg-other-ctor-buffer-ctor-custom-species.js')
-rw-r--r-- | test/built-ins/TypedArrays/ctors-bigint/typedarray-arg/typedarray-arg-other-ctor-buffer-ctor-custom-species.js | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/test/built-ins/TypedArrays/ctors-bigint/typedarray-arg/typedarray-arg-other-ctor-buffer-ctor-custom-species.js b/test/built-ins/TypedArrays/ctors-bigint/typedarray-arg/typedarray-arg-other-ctor-buffer-ctor-custom-species.js new file mode 100644 index 000000000..f31427329 --- /dev/null +++ b/test/built-ins/TypedArrays/ctors-bigint/typedarray-arg/typedarray-arg-other-ctor-buffer-ctor-custom-species.js @@ -0,0 +1,52 @@ +// 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: > + Use default ArrayBuffer constructor on undefined buffer.constructor.@@species +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. + ... + +includes: [testBigIntTypedArray.js] +features: [BigInt, Symbol.species, TypedArray] +---*/ + +var sample1 = new Int8Array(); +var sample2 = new Int16Array(); + +testWithTypedArrayConstructors(function(TA) { + var sample = TA === Int8Array ? sample2 : sample1; + var ctor = {}; + var called = 0; + var custom = {}; + + sample.buffer.constructor = ctor; + + ctor[Symbol.species] = function() { + called++; + }; + + ctor[Symbol.species].prototype = custom; + + var typedArray = new TA(sample); + assert.sameValue(Object.getPrototypeOf(typedArray.buffer), custom); + assert.sameValue(called, 0); +}); |