diff -r 000000000000 -r 6474c204b198 js/src/tests/test262/intl402/ch11/11.3/11.3.2_FN_1.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/test262/intl402/ch11/11.3/11.3.2_FN_1.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,19 @@
+// Copyright 2012 Google Inc.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * @description Tests that Intl.NumberFormat.prototype.format
+ * doesn't treat all numbers as negative.
+ * @author: Roozbeh Pournader
+ */
+
+var formatter = new Intl.NumberFormat();
+  
+if (formatter.format(1) === formatter.format(-1)) {
+    $ERROR('Intl.NumberFormat is formatting 1 and -1 the same way.');
+}
+
+if (formatter.format(-0) !== formatter.format(0)) {
+    $ERROR('Intl.NumberFormat is formatting signed zeros differently.');
+}
+