diff -r 000000000000 -r 6474c204b198 dom/mobileconnection/tests/marionette/test_mobile_connections_array_uninitialized.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/mobileconnection/tests/marionette/test_mobile_connections_array_uninitialized.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,13 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+MARIONETTE_TIMEOUT = 60000;
+MARIONETTE_HEAD_JS = "head.js";
+
+startTestCommon(function() {
+  let connections =
+    workingFrame.contentWindow.navigator.mozMobileConnections;
+
+  let num = getNumOfRadioInterfaces();
+  is(connections.length, num, "ril.numRadioInterfaces");
+});