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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/built-ins/Atomics/wait/undefined-index-defaults-to-zero.js | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Atomics/wait/undefined-index-defaults-to-zero.js b/js/src/tests/test262/built-ins/Atomics/wait/undefined-index-defaults-to-zero.js new file mode 100644 index 0000000000..3ea0dcc133 --- /dev/null +++ b/js/src/tests/test262/built-ins/Atomics/wait/undefined-index-defaults-to-zero.js @@ -0,0 +1,53 @@ +// |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 Amal Hussein. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +esid: sec-atomics.wait +description: > + An undefined index arg should translate to 0 +info: | + Atomics.wait( typedArray, index, value, timeout ) + + 2.Let i be ? ValidateAtomicAccess(typedArray, index). + ... + 2.Let accessIndex be ? ToIndex(requestIndex). + + 9.If IsSharedArrayBuffer(buffer) is false, throw a TypeError exception. + ... + 3.If bufferData is a Data Block, return false + + If value is undefined, then + Let index be 0. + +includes: [atomicsHelper.js] +features: [Atomics, SharedArrayBuffer, TypedArray] +---*/ + +const RUNNING = 1; +const TIMEOUT = $262.agent.timeouts.long; + +$262.agent.start(` + $262.agent.receiveBroadcast(function(sab) { + const i32a = new Int32Array(sab); + Atomics.add(i32a, ${RUNNING}, 1); + + $262.agent.report(Atomics.wait(i32a, undefined, 0, ${TIMEOUT})); // undefined index => 0 + $262.agent.leaving(); + }); +`); + +const i32a = new Int32Array( + new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 4) +); + +$262.agent.safeBroadcast(i32a); +$262.agent.waitUntil(i32a, RUNNING, 1); + +// Try to yield control to ensure the agent actually started to wait. +$262.agent.tryYield(); + +assert.sameValue(Atomics.notify(i32a, 0), 1, 'Atomics.notify(i32a, 0) returns 1'); // notify at index 0 +assert.sameValue(Atomics.notify(i32a, 0), 0, 'Atomics.notify(i32a, 0) returns 0'); // notify again at index 0, and 0 agents should be woken +assert.sameValue($262.agent.getReport(), 'ok', '$262.agent.getReport() returns "ok"'); + +reportCompare(0, 0); |