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Add test case for tc39/ecma262#1009 (#1240)

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André Bargull 2018-01-30 16:29:19 +01:00 committed by Leo Balter
parent 1bcb4fc2ef
commit 1989f0fe6d
2 changed files with 125 additions and 0 deletions
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61
test/built-ins/TypedArrays/typedarray-arg-detached-when-species-retrieved-different-type.js Normal file
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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: [testTypedArray.js, detachArrayBuffer.js]
features: [TypedArray, Symbol.species]
---*/
testWithTypedArrayConstructors(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");
});

64
test/built-ins/TypedArrays/typedarray-arg-detached-when-species-retrieved-same-type.js Normal file
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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 the same 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
a. Let data be ? CloneArrayBuffer(srcData, srcByteOffset, byteLength, bufferConstructor).
...
24.1.1.4 CloneArrayBuffer ( srcBuffer, srcByteOffset, srcLength, cloneConstructor )
...
3. Let targetBuffer be ? AllocateArrayBuffer(cloneConstructor, srcLength).
4. If IsDetachedBuffer(srcBuffer) is true, throw a TypeError exception.
...
24.1.1.1 AllocateArrayBuffer ( constructor, byteLength )
1. Let obj be ? OrdinaryCreateFromConstructor(constructor, "%ArrayBufferPrototype%",
« [[ArrayBufferData]], [[ArrayBufferByteLength]] »).
...
includes: [testTypedArray.js, detachArrayBuffer.js]
features: [TypedArray, Symbol.species]
---*/
testWithTypedArrayConstructors(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() {
new TA(ta);
}, "TypeError thrown for detached source buffer");
assert.sameValue(speciesCallCount, 1, "@@species getter called once");
assert.sameValue(prototypeCallCount, 1, "prototype getter called once");
});