1 files changed, 15 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Proxy/preventExtensions/trap-is-undefined.js b/js/src/tests/test262/built-ins/Proxy/preventExtensions/trap-is-undefined.js
new file mode 100644
index 0000000000..234bb0945f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Proxy/preventExtensions/trap-is-undefined.js
@@ -0,0 +1,15 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 9.5.4
+description: >
+    Return target.[[PreventExtensions]]() if target is undefined.
+features: [Proxy, Reflect]
+---*/
+
+var target = {};
+var p = new Proxy(target, {});
+
+assert.sameValue(Reflect.preventExtensions(p), true);
+
+reportCompare(0, 0);