def METHOD_NAME(self):
    # A message with no files is likely not for us
    msg = cvs1_11_msg.replace(
        'Files: base/module/src/make GNUmakefile,1.362,1.363', '')
    m = message_from_string(msg)
    src = CVSMaildirSource('/dev/null')
    chdict = src.parse(m)
    self.assertEqual(chdict, None)