diff -r 000000000000 -r 6474c204b198 layout/reftests/xul-document-load/test022.xul
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layout/reftests/xul-document-load/test022.xul	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,17 @@
+<?xml version="1.0"?>
+<!--
+Any copyright is dedicated to the Public Domain.
+http://creativecommons.org/licenses/publicdomain/
+-->
+<window title="Testcase for bug 369828 - html:style doesn't work in XUL documents"
+  xmlns:html="http://www.w3.org/1999/xhtml"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+  style="background-color: red">
+
+<html:style type="text/css">
+  window {
+    background-color: green !important;
+  }
+</html:style>
+
+</window>