diff -r 000000000000 -r 6474c204b198 js/src/tests/test262/ch11/11.8/11.8.6/S11.8.6_A2.4_T1.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/test262/ch11/11.8/11.8.6/S11.8.6_A2.4_T1.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.
+
+/**
+ * First expression is evaluated first, and then second expression
+ *
+ * @path ch11/11.8/11.8.6/S11.8.6_A2.4_T1.js
+ * @description Checking with "="
+ */
+
+//CHECK#1 
+var OBJECT = 0;
+if ((OBJECT = Object, {}) instanceof OBJECT !== true) {
+  $ERROR('#1: var OBJECT = 0; (OBJECT = Object, {}) instanceof OBJECT === true');
+}
+
+//CHECK#2
+var object = {}; 
+if (object instanceof (object = 0, Object) !== true) {
+  $ERROR('#2: var object = {};  object instanceof (object = 0, Object) === true');
+}
+
+