diff -r 000000000000 -r 6474c204b198 js/src/tests/test262/ch12/12.5/S12.5_A1_T2.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/test262/ch12/12.5/S12.5_A1_T2.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,52 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * 1, true, non-empty string in expression is evaluated to true
+ *
+ * @path ch12/12.5/S12.5_A1_T2.js
+ * @description Using "if/else" construction
+ */
+
+var c=0;
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#1
+if(!(1))
+	$ERROR('#1.1: 1 in expression is evaluated to true');
+else
+  c++;
+if (c!=1) $ERROR('#1.2: else branch don`t execute');
+//
+//////////////////////////////////////////////////////////////////////////////
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#2
+if(!(true))
+	$ERROR('#2.1: true in expression is evaluated to true');
+else
+  c++;
+if (c!=2) $ERROR('#2.2: else branch don`t execute');
+//
+//////////////////////////////////////////////////////////////////////////////
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#3
+if(!("1"))
+	$ERROR('#3.1: "1" in expression is evaluated to true');
+else
+  c++;
+if (c!=3) $ERROR('#3.2: else branch don`t execute');
+//
+//////////////////////////////////////////////////////////////////////////////
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#4
+if(!("A"))
+	$ERROR('#4.1: "A" in expression is evaluated to true');
+else
+  c++;
+if (c!=4) $ERROR('#4.2: else branch don`t execute');
+//
+//////////////////////////////////////////////////////////////////////////////
+
+