Test that a manifest served with a wrong signature isn't treated as such.
-Should say SUCCESS:
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
-SUCCESS
+
+PASS window.applicationCache.status is applicationCache.UNCACHED
+PASS event.reason is "signature"
+PASS event.url is ""
+PASS event.status is 0
+PASS 'message' in event is true
+PASS successfullyParsed is true
+
+TEST COMPLETE