mirror of https://github.com/tc39/test262.git
45 lines
1.5 KiB
JavaScript
45 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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description: Test Atomics.load on arrays that allow atomic operations.
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includes: [testAtomics.js, testTypedArray.js]
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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 int_views = [Int8Array, Uint8Array, Int16Array, Uint16Array, Int32Array, Uint32Array];
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testWithTypedArrayConstructors(function(View) {
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// Make it interesting - use non-zero byteOffsets and non-zero indexes.
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var view = new View(sab, 32, 20);
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var control = new View(ab, 0, 2);
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view[3] = -5;
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control[0] = -5;
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assert.sameValue(Atomics.load(view, 3), control[0],
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"Result is subject to coercion");
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control[0] = 12345;
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view[3] = 12345;
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assert.sameValue(Atomics.load(view, 3), control[0],
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"Result is subject to chopping");
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control[0] = 123456789;
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view[3] = 123456789;
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assert.sameValue(Atomics.load(view, 3), control[0],
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"Result is subject to chopping");
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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() computes an index from Idx in the same way as other
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// Atomics operations, not quite like view[Idx].
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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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}, int_views);
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