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// Copyright (C) 2017 André Bargull. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-typedarray-typedarray
description: >
When a TypedArray is created from another TypedArray with a different element-type
and SpeciesConstructor detaches the source buffer, AllocateArrayBuffer is still
executed.
info: |
22.2.4.3 TypedArray ( typedArray )
...
16. If IsSharedArrayBuffer(srcData) is false, then
a. Let bufferConstructor be ? SpeciesConstructor(srcData, %ArrayBuffer%).
...
18. If SameValue(elementType, srcType) is true, then
...
19. Else,
a. Let data be ? AllocateArrayBuffer(bufferConstructor, byteLength).
b. If IsDetachedBuffer(srcData) is true, throw a TypeError exception.
...
24.1.1.1 AllocateArrayBuffer ( constructor, byteLength )
1. Let obj be ? OrdinaryCreateFromConstructor(constructor, "%ArrayBufferPrototype%",
« [[ArrayBufferData]], [[ArrayBufferByteLength]] »).
...
includes: [testBigIntTypedArray.js, detachArrayBuffer.js]
features: [BigInt, TypedArray, Symbol.species]
---*/
testWithBigIntTypedArrayConstructors(function(TA) {
var speciesCallCount = 0;
var bufferConstructor = Object.defineProperty({}, Symbol.species, {
get: function() {
speciesCallCount += 1;
$DETACHBUFFER(ta.buffer);
return speciesConstructor;
}
});
var prototypeCallCount = 0;
var speciesConstructor = Object.defineProperty(function(){}.bind(), "prototype", {
get: function() {
prototypeCallCount += 1;
return null;
}
});
var ta = new TA(0);
ta.buffer.constructor = bufferConstructor;
assert.throws(TypeError, function() {
var targetType = TA !== Int32Array ? Int32Array : Uint32Array;
new targetType(ta);
}, "TypeError thrown for detached source buffer");
assert.sameValue(speciesCallCount, 1, "@@species getter called once");
assert.sameValue(prototypeCallCount, 1, "prototype getter called once");
});
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