diff -r 000000000000 -r 6474c204b198 js/src/tests/test262/ch11/11.4/11.4.6/S11.4.6_A3_T3.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/test262/ch11/11.4/11.4.6/S11.4.6_A3_T3.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator +x returns ToNumber(x)
+ *
+ * @path ch11/11.4/11.4.6/S11.4.6_A3_T3.js
+ * @description Type(x) is string primitive or String object
+ */
+
+//CHECK#1
+if (+"1" !== 1) {
+  $ERROR('#1: +"1" === 1. Actual: ' + (+"1"));
+}
+
+//CHECK#2
+if (isNaN(+"x") !== true) {
+  $ERROR('#2: +"x" === Not-a-Number. Actual: ' + (+"x"));
+}
+
+//CHECK#3
+if (+new Number("-1") !== -1) {
+  $ERROR('#3: +new String("-1") === -1. Actual: ' + (+new String("-1")));
+}
+