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Diffstat (limited to 'js/src/tests/test262/built-ins/Atomics/sub/good-views.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Atomics/sub/good-views.js | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Atomics/sub/good-views.js b/js/src/tests/test262/built-ins/Atomics/sub/good-views.js new file mode 100644 index 0000000000..c99583692e --- /dev/null +++ b/js/src/tests/test262/built-ins/Atomics/sub/good-views.js @@ -0,0 +1,57 @@ +// |reftest| skip-if(!this.hasOwnProperty('Atomics')||!this.hasOwnProperty('SharedArrayBuffer')||(this.hasOwnProperty('getBuildConfiguration')&&getBuildConfiguration()['arm64-simulator'])) -- Atomics,SharedArrayBuffer is not enabled unconditionally, ARM64 Simulator cannot emulate atomics +// Copyright (C) 2017 Mozilla Corporation. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-atomics.sub +description: Test Atomics.sub on arrays that allow atomic operations +includes: [testAtomics.js, testTypedArray.js] +features: [ArrayBuffer, Atomics, DataView, SharedArrayBuffer, Symbol, TypedArray] +---*/ + +var sab = new SharedArrayBuffer(1024); +var ab = new ArrayBuffer(16); +var views = intArrayConstructors.slice(); + +testWithTypedArrayConstructors(function(TA) { + // Make it interesting - use non-zero byteOffsets and non-zero indexes. + + var view = new TA(sab, 32, 20); + var control = new TA(ab, 0, 2); + + view[8] = 100; + assert.sameValue(Atomics.sub(view, 8, 10), 100, + 'Atomics.sub(view, 8, 10) returns 100'); + assert.sameValue(view[8], 90, 'The value of view[8] is 90'); + + assert.sameValue(Atomics.sub(view, 8, -5), 90, + 'Atomics.sub(view, 8, -5) returns 90'); + assert.sameValue(view[8], 95, 'The value of view[8] is 95'); + + view[3] = -5; + control[0] = -5; + assert.sameValue(Atomics.sub(view, 3, 0), control[0], + 'Atomics.sub(view, 3, 0) returns the value of `control[0]` (-5)'); + + control[0] = 12345; + view[3] = 12345; + assert.sameValue(Atomics.sub(view, 3, 0), control[0], + 'Atomics.sub(view, 3, 0) returns the value of `control[0]` (12345)'); + + control[0] = 123456789; + view[3] = 123456789; + assert.sameValue(Atomics.sub(view, 3, 0), control[0], + 'Atomics.sub(view, 3, 0) 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.sub(view, Idx, 0), 37, 'Atomics.sub(view, Idx, 0) returns 37'); + }); +}, views); + +reportCompare(0, 0); |