mirror of
https://github.com/tc39/test262.git
synced 2025-10-31 19:53:50 +01:00
47 lines
1.6 KiB
JavaScript
47 lines
1.6 KiB
JavaScript
// Copyright (C) 2017 Mozilla Corporation. All rights reserved.
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
|
|
|
/*---
|
|
esid: sec-atomics.load
|
|
description: Test Atomics.load on arrays that allow atomic operations.
|
|
includes: [testAtomics.js, testTypedArray.js]
|
|
features: [ArrayBuffer, Atomics, DataView, SharedArrayBuffer, Symbol, TypedArray]
|
|
---*/
|
|
|
|
const sab = new SharedArrayBuffer(1024);
|
|
const ab = new ArrayBuffer(16);
|
|
|
|
const views = nonClampedIntArrayConstructors.slice();
|
|
|
|
testWithTypedArrayConstructors(function(TA) {
|
|
// Make it interesting - use non-zero byteOffsets and non-zero indexes.
|
|
|
|
const view = new TA(sab, 32, 20);
|
|
const control = new TA(ab, 0, 2);
|
|
|
|
view[3] = -5;
|
|
control[0] = -5;
|
|
assert.sameValue(Atomics.load(view, 3), control[0],
|
|
'Atomics.load(view, 3) returns the value of `control[0]` (-5)');
|
|
|
|
control[0] = 12345;
|
|
view[3] = 12345;
|
|
assert.sameValue(Atomics.load(view, 3), control[0],
|
|
'Atomics.load(view, 3) returns the value of `control[0]` (12345)');
|
|
|
|
control[0] = 123456789;
|
|
view[3] = 123456789;
|
|
assert.sameValue(Atomics.load(view, 3), control[0],
|
|
'Atomics.load(view, 3) returns the value of `control[0]` (123456789)');
|
|
|
|
// In-bounds boundary cases for indexing
|
|
testWithAtomicsInBoundsIndices(function(IdxGen) {
|
|
let Idx = IdxGen(view);
|
|
view.fill(0);
|
|
// Atomics.store() computes an index from Idx in the same way as other
|
|
// Atomics operations, not quite like view[Idx].
|
|
Atomics.store(view, Idx, 37);
|
|
assert.sameValue(Atomics.load(view, Idx), 37, 'Atomics.load(view, Idx) returns 37');
|
|
});
|
|
}, views);
|