1 files changed, 28 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Atomics/Symbol.toStringTag.js b/js/src/tests/test262/built-ins/Atomics/Symbol.toStringTag.js
new file mode 100644
index 0000000000..0e0721c000
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Atomics/Symbol.toStringTag.js
@@ -0,0 +1,28 @@
+// |reftest| skip-if(!this.hasOwnProperty('Atomics')) -- Atomics is not enabled unconditionally
+// Copyright (C) 2017 Mozilla Corporation.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-atomics-@@tostringtag
+description: >
+    `Symbol.toStringTag` property descriptor on Atomics
+info: |
+    The initial value of the @@toStringTag property is the String value
+    "Atomics".
+
+    This property has the attributes { [[Writable]]: false, [[Enumerable]]:
+    false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+features: [Atomics, Symbol, Symbol.toStringTag]
+---*/
+
+assert.sameValue(
+  Atomics[Symbol.toStringTag],
+  'Atomics',
+  'The value of Atomics[Symbol.toStringTag] is "Atomics"'
+);
+
+verifyNotEnumerable(Atomics, Symbol.toStringTag);
+verifyNotWritable(Atomics, Symbol.toStringTag);
+verifyConfigurable(Atomics, Symbol.toStringTag);
+
+reportCompare(0, 0);