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Tests for using internal byteOffset in TypedArray.prototype.set (#944)

This commit is contained in:
Choongwoo Han 2017-04-07 01:04:09 +09:00 committed by Leo Balter
parent ce95292899
commit ab9738c471
2 changed files with 87 additions and 0 deletions
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44
test/built-ins/TypedArray/prototype/set/typedarray-arg-src-byteoffset-internal.js vendored 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%.prototype.set-typedarray-offset
description: >
Uses typedArray's internal [[ByteOffset]]
info: >
22.2.3.23.2 %TypedArray%.prototype.set(typedArray [ , offset ] )
1. Assert: typedArray has a [[TypedArrayName]] internal slot. If it does not,
the definition in 22.2.3.23.1 applies.
...
21. Let srcByteOffset be typedArray.[[ByteOffset]].
...
includes: [testTypedArray.js]
---*/
var getCalls = 0;
var desc = {
get: function getLen() {
getCalls++;
return 0;
}
};
Object.defineProperty(TypedArray.prototype, "byteOffset", desc);
testWithTypedArrayConstructors(function(TA) {
var sample = new TA(2);
var src = new TA([42, 43]);
var differentTA = TA === Uint8Array ? Int8Array : Uint8Array;
var src2 = new differentTA([42, 43]);
var src3 = new differentTA(sample.buffer, 0, 2);
Object.defineProperty(TA.prototype, "byteOffset", desc);
Object.defineProperty(src, "byteOffset", desc);
Object.defineProperty(src2, "byteOffset", desc);
Object.defineProperty(src3, "byteOffset", desc);
sample.set(src);
sample.set(src2);
sample.set(src3);
assert.sameValue(getCalls, 0, "ignores byteOffset properties");
});

43
test/built-ins/TypedArray/prototype/set/typedarray-arg-target-byteoffset-internal.js vendored 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%.prototype.set-typedarray-offset
description: >
Uses target's internal [[ArrayLength]]
info: >
22.2.3.23.2 %TypedArray%.prototype.set(typedArray [ , offset ] )
1. Assert: typedArray has a [[TypedArrayName]] internal slot. If it does not,
the definition in 22.2.3.23.1 applies.
2. Let target be the this value.
...
16. Let targetByteOffset be target.[[ByteOffset]].
...
includes: [testTypedArray.js]
---*/
var getCalls = 0;
var desc = {
get: function() {
getCalls++;
return 0;
}
};
Object.defineProperty(TypedArray.prototype, "byteOffset", desc);
testWithTypedArrayConstructors(function(TA) {
var sample = new TA(2);
var src = new TA([42, 43]);
var differentTA = TA === Uint8Array ? Int8Array : Uint8Array;
var src2 = new differentTA([42, 43]);
var src3 = new differentTA(sample.buffer, 0, 2);
Object.defineProperty(TA.prototype, "byteOffset", desc);
Object.defineProperty(sample, "byteOffset", desc);
sample.set(src);
sample.set(src2);
sample.set(src3);
assert.sameValue(getCalls, 0, "ignores byteoffset properties");
});