diff -r 000000000000 -r 6474c204b198 js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A4_T1.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A4_T1.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,18 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * AssignmentExpression : LeftHandSideExpression = AssignmentExpression
+ *
+ * @path ch11/11.13/11.13.1/S11.13.1_A4_T1.js
+ * @description Syntax check
+ */
+
+//CHECK#1
+x = x = 1;
+if (x !== 1) {
+  $ERROR('#1: The expression x = x = 1 is the same x = (x = 1), not (x = x) = 1. Actual: ' + (x));
+}
+
+
+