diff -r 000000000000 -r 6474c204b198 js/src/tests/test262/ch11/11.8/11.8.1/S11.8.1_A4.1.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/test262/ch11/11.8/11.8.1/S11.8.1_A4.1.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,51 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * If x is NaN, return false (if result in 11.8.5 is undefined, return false)
+ *
+ * @path ch11/11.8/11.8.1/S11.8.1_A4.1.js
+ * @description y is number primitive
+ */
+
+//CHECK#1
+if ((Number.NaN < 0) !== false) {
+  $ERROR('#1: (NaN < 0) === false');
+}
+
+//CHECK#2
+if ((Number.NaN < 1.1) !== false) {
+  $ERROR('#2: (NaN < 1.1) === false');
+}
+
+//CHECK#3
+if ((Number.NaN < -1.1) !== false) {
+  $ERROR('#3: (NaN < -1.1) === false');
+}
+
+//CHECK#4
+if ((Number.NaN < Number.NaN) !== false) {
+  $ERROR('#4: (NaN < NaN) === false');
+}
+
+//CHECK#5
+if ((Number.NaN < Number.POSITIVE_INFINITY) !== false) {
+  $ERROR('#5: (NaN < +Infinity) === false');
+}
+
+//CHECK#6
+if ((Number.NaN < Number.NEGATIVE_INFINITY) !== false) {
+  $ERROR('#6: (NaN < -Infinity) === false');
+}
+
+//CHECK#7
+if ((Number.NaN < Number.MAX_VALUE) !== false) {
+  $ERROR('#7: (NaN < Number.MAX_VALUE) === false');
+}
+
+//CHECK#8
+if ((Number.NaN < Number.MIN_VALUE) !== false) {
+  $ERROR('#8: (NaN < Number.MIN_VALUE) === false');
+}
+
+