diff -r 000000000000 -r 6474c204b198 js/src/tests/test262/ch10/10.2/10.2.3/S10.2.3_A2.3_T4.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/test262/ch10/10.2/10.2.3/S10.2.3_A2.3_T4.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Global object properties have attributes { DontEnum }
+ *
+ * @path ch10/10.2/10.2.3/S10.2.3_A2.3_T4.js
+ * @description Global execution context - Other Properties
+ */
+
+var evalStr = 
+'//CHECK#1\n'+
+'for (var x in this) {\n'+
+'  if ( x === \'Math\' ) {\n'+
+'    $ERROR("#1: \'Math\' have attribute DontEnum");\n'+
+'  }\n'+
+'}\n';
+
+eval(evalStr);
+