// 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.slice
description: Throws a TypeError if buffer of object created by custom constructor is detached.
info: |
%TypedArray%.prototype.slice ( start, end )
Let A be ? TypedArraySpeciesCreate(O, « count »).
TypedArraySpeciesCreate ( exemplar, argumentList )
Let result be ? TypedArrayCreate(constructor, argumentList).
TypedArrayCreate ( constructor, argumentList )
Let newTypedArray be ? Construct(constructor, argumentList).
Perform ? ValidateTypedArray(newTypedArray).
ValidateTypedArray ( O )
The abstract operation ValidateTypedArray takes argument O. It performs the following steps when called:
Perform ? RequireInternalSlot(O, [[TypedArrayName]]).
Assert: O has a [[ViewedArrayBuffer]] internal slot.
Let buffer be O.[[ViewedArrayBuffer]].
If IsDetachedBuffer(buffer) is true, throw a TypeError exception.
...
includes: [testBigIntTypedArray.js, detachArrayBuffer.js]
features: [align-detached-buffer-semantics-with-web-reality, BigInt, Symbol.species, TypedArray]
---*/
testWithBigIntTypedArrayConstructors(function(TA) {
let counter = 0;
let sample = new TA(1);
sample.constructor = {};
sample.constructor[Symbol.species] = function(count) {
let other = new TA(count);
counter++;
$DETACHBUFFER(other.buffer);
return other;
};
assert.throws(TypeError, function() {
counter++;
sample.slice();
}, '`sample.slice()` throws TypeError');
assert.sameValue(counter, 2, 'The value of `counter` is 2');
});