diff -r 000000000000 -r 6474c204b198 js/src/tests/test262/intl402/ch11/11.1/11.1.3.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/test262/intl402/ch11/11.1/11.1.3.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,19 @@
+// Copyright 2012 Mozilla Corporation. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * @description Tests that objects constructed by Intl.NumberFormat have the specified internal properties.
+ * @author Norbert Lindenberg
+ */
+
+var obj = new Intl.NumberFormat();
+
+var actualPrototype = Object.getPrototypeOf(obj);
+if (actualPrototype !== Intl.NumberFormat.prototype) {
+    $ERROR("Prototype of object constructed by Intl.NumberFormat isn't Intl.NumberFormat.prototype; got " + actualPrototype);
+}
+
+if (!Object.isExtensible(obj)) {
+    $ERROR("Object constructed by Intl.NumberFormat must be extensible.");
+}
+