diff -r 000000000000 -r 6474c204b198 netwerk/test/unit/test_bug337744.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/netwerk/test/unit/test_bug337744.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,34 @@
+/* verify that certain invalid URIs are not parsed by the resource
+   protocol handler */
+
+const specs = [
+  "resource:////",
+  "resource:///http://www.mozilla.org/",
+  "resource:///file:///",
+  "resource:///..\\",
+  "resource:///..\\..\\",
+  "resource:///..%5C",
+  "resource:///..%5c"
+];
+
+function check_for_exception(spec)
+{
+  var ios =
+    Cc["@mozilla.org/network/io-service;1"].
+    getService(Ci.nsIIOService);
+
+  try {
+    var channel = ios.newChannel(spec, null, null);
+  }
+  catch (e) {
+    return;
+  }
+
+  do_throw("Successfully opened invalid URI: '" + spec + "'");
+}
+
+function run_test() {
+  for each (spec in specs) {
+    check_for_exception(spec);
+  }
+}