mirror of https://github.com/tc39/test262.git
61 lines
1.5 KiB
JavaScript
61 lines
1.5 KiB
JavaScript
// Copyright (C) 2017 Mozilla Corporation. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-atomics.store
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description: Test Atomics.store on arrays that allow atomic operations.
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includes: [testAtomics.js, testTypedArray.js]
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features: [ArrayBuffer, arrow-function, Atomics, DataView, for-of, let, SharedArrayBuffer, TypedArray]
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---*/
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var sab = new SharedArrayBuffer(1024);
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var ab = new ArrayBuffer(16);
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var views = intArrayConstructors.slice();
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testWithTypedArrayConstructors(function(TA) {
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// Make it interesting - use non-zero byteOffsets and non-zero indexes.
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var view = new TA(sab, 32, 20);
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var control = new TA(ab, 0, 2);
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for (let val of [10, -5,
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12345,
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123456789,
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Math.PI,
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"33",
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{
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valueOf: () => 33
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},
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undefined
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])
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{
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assert.sameValue(Atomics.store(view, 3, val), ToInteger(val),
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"Atomics.store returns its third argument (" + val + ") converted to Integer, not the input value nor the value that was stored");
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control[0] = val;
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assert.sameValue(view[3], control[0]);
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}
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// In-bounds boundary cases for indexing
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testWithAtomicsInBoundsIndices(function(IdxGen) {
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let Idx = IdxGen(view);
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view.fill(0);
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Atomics.store(view, Idx, 37);
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assert.sameValue(Atomics.load(view, Idx), 37);
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});
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}, views);
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function ToInteger(v) {
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v = +v;
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if (isNaN(v)) {
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return 0;
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}
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if (v == 0 || !isFinite(v)) {
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return v;
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}
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if (v < 0) {
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return -Math.floor(Math.abs(v));
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}
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return Math.floor(v);
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}
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