diff -r 000000000000 -r 6474c204b198 js/src/tests/test262/ch11/11.11/11.11.2/S11.11.2_A2.4_T1.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/test262/ch11/11.11/11.11.2/S11.11.2_A2.4_T1.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * First expression is evaluated first, and then second expression
+ *
+ * @path ch11/11.11/11.11.2/S11.11.2_A2.4_T1.js
+ * @description Checking with "="
+ */
+
+//CHECK#1
+var x = true; 
+if (((x = false) || x) !== false) {
+  $ERROR('#1: var x = true; ((x = false) || x) === false');
+}
+
+//CHECK#2
+var x = true; 
+if ((x || (x = false)) !== true) {
+  $ERROR('#2: var x = true; (x || (x = false)) === true');
+}
+