1 files changed, 39 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Atomics/waitAsync/returns-result-object-value-is-string-not-equal.js b/js/src/tests/test262/built-ins/Atomics/waitAsync/returns-result-object-value-is-string-not-equal.js
new file mode 100644
index 0000000000..f981109bb7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Atomics/waitAsync/returns-result-object-value-is-string-not-equal.js
@@ -0,0 +1,39 @@
+// |reftest| skip -- 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: >
+  Atomics.waitAsync returns a result object containing a string "not-equal" and async is false.
+info: |
+  Atomics.waitAsync( typedArray, index, value, timeout )
+
+  1. Return DoWait(async, typedArray, index, value, timeout).
+
+  DoWait ( mode, typedArray, index, value, timeout )
+
+  ...
+  13. Let promiseCapability be undefined.
+  14. If mode is async, then
+    a. Set promiseCapability to ! NewPromiseCapability(%Promise%).
+
+  ...
+  Perform ! CreateDataPropertyOrThrow(_resultObject_, *"async"*, *true*).
+  Perform ! CreateDataPropertyOrThrow(_resultObject_, *"value"*, _promiseCapability_.[[Promise]]).
+  Return _resultObject_.
+
+features: [Atomics.waitAsync, TypedArray, SharedArrayBuffer, destructuring-binding, Atomics]
+---*/
+assert.sameValue(typeof Atomics.waitAsync, 'function', 'The value of `typeof Atomics.waitAsync` is "function"');
+
+const i32a = new Int32Array(
+  new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 8)
+);
+
+let {async, value} = Atomics.waitAsync(i32a, 0, 1);
+
+assert.sameValue(async, false, 'The value of `async` is false');
+assert.sameValue(value, "not-equal", 'The value of `value` is "not-equal"');
+
+reportCompare(0, 0);