1 files changed, 21 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/WeakSet/prototype/add/returns-this-symbol.js b/js/src/tests/test262/built-ins/WeakSet/prototype/add/returns-this-symbol.js
new file mode 100644
index 0000000000..5e8b67fc06
--- /dev/null
+++ b/js/src/tests/test262/built-ins/WeakSet/prototype/add/returns-this-symbol.js
@@ -0,0 +1,21 @@
+// |reftest| skip -- symbols-as-weakmap-keys is not supported
+// Copyright (C) 2022 Igalia S.L. 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 the this value.
+  ...
+  7. Return S.
+features: [Symbol, WeakSet, symbols-as-weakmap-keys]
+---*/
+
+var s = new WeakSet();
+
+assert.sameValue(s.add(Symbol('description')), s, '`s.add(Symbol("description"))` returns `s`');
+
+reportCompare(0, 0);