diff -r 000000000000 -r 6474c204b198 js/src/tests/test262/ch11/11.8/11.8.2/S11.8.2_A4.10.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/test262/ch11/11.8/11.8.2/S11.8.2_A4.10.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,41 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * If x is a prefix of y, return false
+ *
+ * @path ch11/11.8/11.8.2/S11.8.2_A4.10.js
+ * @description x and y are string primitives
+ */
+
+//CHECK#1
+if (("x" > "x") !== false) {
+  $ERROR('#1: ("x" > "x") === false');
+}
+
+//CHECK#2
+if (("" > "x") !== false) {
+  $ERROR('#2: ("" > "x") === false');
+}
+
+//CHECK#3
+if (("ab" > "abcd") !== false) {
+  $ERROR('#3: ("ab" > abcd") === false');
+}
+
+//CHECK#4
+if (("abcd" > "abc\u0064") !== false) {
+  $ERROR('#4: ("abcd" > abc\\u0064") === false');
+}
+
+//CHECK#5
+if (("x" > "x" + "y") !== false) {
+  $ERROR('#5: ("x" > "x" + "y") === false');
+}
+
+//CHECK#6
+var x = "x";
+if ((x > x + "y") !== false) {
+  $ERROR('#6: var x = "x"; (x > x + "y") === false');
+}
+