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// 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%.prototype.subarray
description: >
Use defaultConstructor if @@species is either undefined or null
info: |
22.2.3.27 %TypedArray%.prototype.subarray( begin , end )
...
17. Return ? TypedArraySpeciesCreate(O, argumentsList).
22.2.4.7 TypedArraySpeciesCreate ( exemplar, argumentList )
...
3. Let constructor be ? SpeciesConstructor(exemplar, defaultConstructor).
...
7.3.20 SpeciesConstructor ( O, defaultConstructor )
...
5. Let S be ? Get(C, @@species).
6. If S is either undefined or null, return defaultConstructor.
...
includes: [testBigIntTypedArray.js]
features: [BigInt, Symbol.species, TypedArray]
---*/
testWithBigIntTypedArrayConstructors(function(TA) {
var sample = new TA(2);
var result;
sample.constructor = {};
result = sample.subarray(0);
assert.sameValue(
Object.getPrototypeOf(result),
Object.getPrototypeOf(sample),
"undefined @@species - prototype check "
);
assert.sameValue(result.constructor, TA, "undefined @@species - ctor check");
sample.constructor[Symbol.species] = null;
result = sample.subarray(0);
assert.sameValue(
Object.getPrototypeOf(result),
Object.getPrototypeOf(sample),
"null @@species - prototype check "
);
assert.sameValue(result.constructor, TA, "null @@species - ctor check");
});
|
