1 files changed, 85 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Atomics/waitAsync/waiterlist-block-indexedposition-wake.js b/js/src/tests/test262/built-ins/Atomics/waitAsync/waiterlist-block-indexedposition-wake.js
new file mode 100644
index 0000000000..eaef023ecd
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Atomics/waitAsync/waiterlist-block-indexedposition-wake.js
@@ -0,0 +1,85 @@
+// |reftest| skip async -- Atomics.waitAsync is not supported
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-atomics.waitasync
+description: >
+  Get the correct WaiterList
+info: |
+  Atomics.waitAsync( typedArray, index, value, timeout )
+
+  1. Return DoWait(async, typedArray, index, value, timeout).
+
+  DoWait ( mode, typedArray, index, value, timeout )
+
+  11. Let indexedPosition be (i × 4) + offset.
+  12. Let WL be GetWaiterList(block, indexedPosition).
+
+  GetWaiterList( block, i )
+
+  ...
+  4. Return the WaiterList that is referenced by the pair (block, i).
+
+flags: [async]
+includes: [atomicsHelper.js]
+features: [Atomics.waitAsync, SharedArrayBuffer, TypedArray, Atomics, arrow-function, async-functions]
+---*/
+assert.sameValue(typeof Atomics.waitAsync, 'function', 'The value of `typeof Atomics.waitAsync` is "function"');
+
+const NUMAGENT = 2;
+const RUNNING = 4;
+
+$262.agent.start(`
+  $262.agent.receiveBroadcast(async (sab) => {
+    const i32a = new Int32Array(sab);
+    Atomics.add(i32a, ${RUNNING}, 1);
+
+    // Wait on index 0
+    $262.agent.report(await Atomics.waitAsync(i32a, 0, 0, Infinity).value);
+    $262.agent.leaving();
+  });
+`);
+
+$262.agent.start(`
+  $262.agent.receiveBroadcast(async (sab) => {
+    const i32a = new Int32Array(sab);
+    Atomics.add(i32a, ${RUNNING}, 1);
+
+    // Wait on index 2
+    $262.agent.report(await Atomics.waitAsync(i32a, 2, 0, Infinity).value);
+    $262.agent.leaving();
+  });
+`);
+
+const i32a = new Int32Array(
+  new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 5)
+);
+
+$262.agent.safeBroadcastAsync(i32a, RUNNING, NUMAGENT).then(async (agentCount) => {
+
+  assert.sameValue(agentCount, NUMAGENT, 'The value of `agentCount` is expected to equal the value of NUMAGENT');
+
+  // Notify index 1, notifies nothing
+  assert.sameValue(Atomics.notify(i32a, 1), 0, 'Atomics.notify(new Int32Array(new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 5)), 1) must return 0');
+
+  // Notify index 3, notifies nothing
+  assert.sameValue(Atomics.notify(i32a, 3), 0, 'Atomics.notify(new Int32Array(new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 5)), 3) must return 0');
+
+  // Notify index 2, notifies 1
+  assert.sameValue(Atomics.notify(i32a, 2), 1, 'Atomics.notify(new Int32Array(new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 5)), 2) must return 1');
+  assert.sameValue(
+    await $262.agent.getReportAsync(),
+    'ok',
+    '(await $262.agent.getReportAsync()) resolves to the value "ok"'
+  );
+
+  // Notify index 0, notifies 1
+  assert.sameValue(Atomics.notify(i32a, 0), 1, 'Atomics.notify(new Int32Array(new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 5)), 0) must return 1');
+  assert.sameValue(
+    await $262.agent.getReportAsync(),
+    'ok',
+    '(await $262.agent.getReportAsync()) resolves to the value "ok"'
+  );
+
+}).then($DONE, $DONE);