diff -r 000000000000 -r 6474c204b198 chrome/test/unit/test_crlf.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/chrome/test/unit/test_crlf.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,15 @@
+registerManifests([do_get_file("data/test_crlf.manifest")]);
+
+function run_test()
+{
+  let cr = Cc["@mozilla.org/chrome/chrome-registry;1"].
+    getService(Ci.nsIChromeRegistry);
+
+  let ios = Cc["@mozilla.org/network/io-service;1"].
+    getService(Ci.nsIIOService);
+  let sourceURI = ios.newURI("chrome://test_crlf/content/", null, null);
+  // this throws for packages that are not registered
+  let file = cr.convertChromeURL(sourceURI).QueryInterface(Ci.nsIFileURL).file;
+  
+  do_check_true(file.equals(do_get_file("data/test_crlf.xul", true)));
+}