diff -r 000000000000 -r 6474c204b198 js/src/tests/test262/ch11/11.5/11.5.3/S11.5.3_A2.3_T1.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/test262/ch11/11.5/11.5.3/S11.5.3_A2.3_T1.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,26 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * ToNumber(first expression) is called first, and then ToNumber(second expression)
+ *
+ * @path ch11/11.5/11.5.3/S11.5.3_A2.3_T1.js
+ * @description Checking with "throw"
+ */
+
+//CHECK#1
+var x = { valueOf: function () { throw "x"; } };
+var y = { valueOf: function () { throw "y"; } };
+try {
+   x % y;
+   $ERROR('#1.1: var x = { valueOf: function () { throw "x"; } }; var y = { valueOf: function () { throw "y"; } }; x % y throw "x". Actual: ' + (x % y));
+} catch (e) {
+   if (e === "y") {
+     $ERROR('#1.2: ToNumber(first expression) is called first, and then ToNumber(second expression)');
+   } else {
+     if (e !== "x") {
+       $ERROR('#1.3: var x = { valueOf: function () { throw "x"; } }; var y = { valueOf: function () { throw "y"; } }; x % y throw "x". Actual: ' + (e));
+     }
+   }
+}
+