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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/built-ins/Atomics/sub/bigint/good-views.js | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Atomics/sub/bigint/good-views.js b/js/src/tests/test262/built-ins/Atomics/sub/bigint/good-views.js new file mode 100644 index 0000000000..7ae0a82fbb --- /dev/null +++ b/js/src/tests/test262/built-ins/Atomics/sub/bigint/good-views.js @@ -0,0 +1,60 @@ +// |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) 2018 Rick Waldron. 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, testBigIntTypedArray.js] +features: [ArrayBuffer, Atomics, BigInt, DataView, SharedArrayBuffer, Symbol, TypedArray] +---*/ +// Make it interesting - use non-zero byteOffsets and non-zero indexes. +// In-bounds boundary cases for indexing +// Atomics.store() computes an index from Idx in the same way as other +// Atomics operations, not quite like view[Idx]. +const sab = new SharedArrayBuffer(1024); +const ab = new ArrayBuffer(BigInt64Array.BYTES_PER_ELEMENT * 2); + +testWithBigIntTypedArrayConstructors(function(TA) { + const view = new TA(sab, 32, 20); + const control = new TA(ab, 0, 2); + view[8] = 100n; + assert.sameValue(Atomics.sub(view, 8, 10n), 100n, 'Atomics.sub(view, 8, 10n) returns 100n'); + assert.sameValue(view[8], 90n, 'The value of view[8] is 90n'); + assert.sameValue(Atomics.sub(view, 8, -5n), 90n, 'Atomics.sub(view, 8, -5n) returns 90n'); + assert.sameValue(view[8], 95n, 'The value of view[8] is 95'); + view[3] = -5n; + control[0] = -5n; + + assert.sameValue( + Atomics.sub(view, 3, 0n), + control[0], + 'Atomics.sub(view, 3, 0n) returns the value of `control[0]` (-5n)' + ); + + control[0] = 12345n; + view[3] = 12345n; + + assert.sameValue( + Atomics.sub(view, 3, 0n), + control[0], + 'Atomics.sub(view, 3, 0n) returns the value of `control[0]` (12345n)' + ); + + control[0] = 123456789n; + view[3] = 123456789n; + + assert.sameValue( + Atomics.sub(view, 3, 0n), + control[0], + 'Atomics.sub(view, 3, 0n) returns the value of `control[0]` (123456789n)' + ); + + testWithAtomicsInBoundsIndices(function(IdxGen) { + let Idx = IdxGen(view); + view.fill(0n); + Atomics.store(view, Idx, 37n); + assert.sameValue(Atomics.sub(view, Idx, 0n), 37n, 'Atomics.sub(view, Idx, 0n) returns 37n'); + }); +}); + +reportCompare(0, 0); |