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Merge pull request #926 from littledan/typedarray-constructor-edge-case 

* Tests for throwing a TypeError in the TypedArray constructor on a detached buffer

Detached buffer causes an exception
- If it's already detached going into the constructor
- If the byteOffset coercion causes it to be detached

Tests are valid in ES2017

* Test that TypedArray constructor throws when detaching buffer in length calculation

This test is only valid with the PR in https://github.com/tc39/ecma262/pull/852

* Rename files per review
This commit is contained in:
Leo Balter 2017-03-27 13:55:54 -04:00 committed by GitHub
parent 184275fb25 b86b7031b8
commit 89160ff5b7
3 changed files with 60 additions and 0 deletions
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20
test/built-ins/TypedArrays/buffer-arg-byteoffset-to-number-detachbuffer.js Normal file
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// Copyright (C) 2017 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-typedarray-buffer-byteoffset-length
description: If TypedArray() is passed a detached buffer, throw
info: >
22.2.4.5 TypedArray ( buffer [ , byteOffset [ , length ] ] )
...
9. If IsDetachedBuffer(buffer) is true, throw a TypeError exception.
...
includes: [testTypedArray.js, detachArrayBuffer.js]
---*/
testWithTypedArrayConstructors(function(TA) {
var offset = TA.BYTES_PER_ELEMENT;
var buffer = new ArrayBuffer(3 * offset);
var byteOffset = { valueOf() { $DETACHBUFFER(buffer); return 1; } };
assert.throws(TypeError, () => new TA(buffer, byteOffset));
});

20
test/built-ins/TypedArrays/buffer-arg-detachedbuffer.js Normal file
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// Copyright (C) 2017 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-typedarray-buffer-byteoffset-length
description: If TypedArray() is passed a detached buffer, throw
info: >
22.2.4.5 TypedArray ( buffer [ , byteOffset [ , length ] ] )
...
9. If IsDetachedBuffer(buffer) is true, throw a TypeError exception.
...
includes: [testTypedArray.js, detachArrayBuffer.js]
---*/
testWithTypedArrayConstructors(function(TA) {
var offset = TA.BYTES_PER_ELEMENT;
var buffer = new ArrayBuffer(3 * offset);
$DETACHBUFFER(buffer);
assert.throws(TypeError, () => new TA(buffer));
});

20
test/built-ins/TypedArrays/buffer-arg-length-to-number-detachbuffer.js Normal file
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// Copyright (C) 2017 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-typedarray-buffer-byteoffset-length
description: If TypedArray() is passed a detached buffer, throw
info: >
22.2.4.5 TypedArray ( buffer [ , byteOffset [ , length ] ] )
...
9. If IsDetachedBuffer(buffer) is true, throw a TypeError exception.
...
includes: [testTypedArray.js, detachArrayBuffer.js]
---*/
testWithTypedArrayConstructors(function(TA) {
var offset = TA.BYTES_PER_ELEMENT;
var buffer = new ArrayBuffer(3 * offset);
var length = { valueOf() { $DETACHBUFFER(buffer); return 1; } };
assert.throws(TypeError, () => new TA(buffer, 0, length));
});