diff -r 000000000000 -r 6474c204b198 browser/components/feeds/test/unit/test_355473.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/components/feeds/test/unit/test_355473.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,27 @@
+function run_test() {
+  var feedFeedURI = ios.newURI("feed://example.com/feed.xml", null, null);
+  var httpFeedURI = ios.newURI("feed:http://example.com/feed.xml", null, null);
+  var httpURI = ios.newURI("http://example.com/feed.xml", null, null);
+
+  var httpsFeedURI =
+    ios.newURI("feed:https://example.com/feed.xml", null, null);
+  var httpsURI = ios.newURI("https://example.com/feed.xml", null, null);
+
+  var feedChannel = ios.newChannelFromURI(feedFeedURI, null);
+  var httpChannel = ios.newChannelFromURI(httpFeedURI, null);
+  var httpsChannel = ios.newChannelFromURI(httpsFeedURI, null);
+
+  // not setting .originalURI to the original URI is naughty
+  do_check_true(feedFeedURI.equals(feedChannel.originalURI));
+  do_check_true(httpFeedURI.equals(httpChannel.originalURI));
+  do_check_true(httpsFeedURI.equals(httpsChannel.originalURI));
+
+  // actually using the horrible mess that's a feed: URI is suicidal
+  do_check_true(httpURI.equals(feedChannel.URI));
+  do_check_true(httpURI.equals(httpChannel.URI));
+  do_check_true(httpsURI.equals(httpsChannel.URI));
+
+  // check that we don't throw creating feed: URIs from file and ftp
+  var ftpFeedURI = ios.newURI("feed:ftp://example.com/feed.xml", null, null);
+  var fileFeedURI = ios.newURI("feed:file:///var/feed.xml", null, null);
+}