diff -r 000000000000 -r 6474c204b198 embedding/tests/unit/test_wwpromptfactory.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/embedding/tests/unit/test_wwpromptfactory.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,24 @@
+function run_test() {
+  // Make sure that getting both nsIAuthPrompt and nsIAuthPrompt2 works
+  // (these should work independently of whether the application has
+  // nsIPromptService2)
+  var ww = Components.classes["@mozilla.org/embedcomp/window-watcher;1"]
+                     .getService();
+
+  var prompt;
+
+  prompt = ww.nsIWindowWatcher.getNewPrompter(null);
+  do_check_neq(prompt, null);
+  prompt = ww.nsIWindowWatcher.getNewAuthPrompter(null);
+  do_check_neq(prompt, null);
+
+  prompt = ww.nsIPromptFactory.getPrompt(null,
+                                         Components.interfaces.nsIPrompt);
+  do_check_neq(prompt, null);
+  prompt = ww.nsIPromptFactory.getPrompt(null,
+                                         Components.interfaces.nsIAuthPrompt);
+  do_check_neq(prompt, null);
+  prompt = ww.nsIPromptFactory.getPrompt(null,
+                                         Components.interfaces.nsIAuthPrompt2);
+  do_check_neq(prompt, null);
+}