1 files changed, 19 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/WeakSet/prototype/add/returns-this.js b/js/src/tests/test262/built-ins/WeakSet/prototype/add/returns-this.js
new file mode 100644
index 0000000000..36bc5d7ab6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/WeakSet/prototype/add/returns-this.js
@@ -0,0 +1,19 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-weakset.prototype.add
+description: Returns `this` after adding a new value.
+info: |
+  WeakSet.prototype.add ( value )
+
+  1. Let S be this value.
+  ...
+  8. Return S.
+
+---*/
+
+var s = new WeakSet();
+
+assert.sameValue(s.add({}), s, '`s.add({})` returns `s`');
+
+reportCompare(0, 0);