diff -r 000000000000 -r 6474c204b198 js/src/tests/test262/ch11/11.10/11.10.3/S11.10.3_A3_T1.4.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/test262/ch11/11.10/11.10.3/S11.10.3_A3_T1.4.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,30 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x | y returns ToNumber(x) | ToNumber(y)
+ *
+ * @path ch11/11.10/11.10.3/S11.10.3_A3_T1.4.js
+ * @description Type(x) and Type(y) vary between Null and Undefined
+ */
+
+//CHECK#1
+if ((null | undefined) !== 0) {
+  $ERROR('#1: (null | undefined) === 0. Actual: ' + ((null | undefined)));
+}
+
+//CHECK#2
+if ((undefined | null) !== 0) {
+  $ERROR('#2: (undefined | null) === 0. Actual: ' + ((undefined | null)));
+}
+
+//CHECK#3
+if ((undefined | undefined) !== 0) {
+  $ERROR('#3: (undefined | undefined) === 0. Actual: ' + ((undefined | undefined)));
+}
+
+//CHECK#4
+if ((null | null) !== 0) {
+  $ERROR('#4: (null | null) === 0. Actual: ' + ((null | null)));
+}
+