diff -r 000000000000 -r 6474c204b198 js/src/tests/test262/ch08/8.5/S8.5_A12.1.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/test262/ch08/8.5/S8.5_A12.1.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * +Infinity and Infinity are the same as Number.POSITIVE_INFINITY
+ *
+ * @path ch08/8.5/S8.5_A12.1.js
+ * @description Compare Infinity and +Infinity with Number.POSITIVE_INFINITY
+ */
+
+var p_inf=+Infinity;
+var inf=Infinity;
+
+//CHECK #1 
+if (p_inf!==Number.POSITIVE_INFINITY){
+  $ERROR('#1: +Infinity is the same as Number.POSITIVE_INFINITY');
+}
+
+//CHECK #2 
+if (inf!==Number.POSITIVE_INFINITY){
+  $ERROR('#2: Infinity is the same as Number.POSITIVE_INFINITY');
+}
+