def METHOD_NAME(self):
    ### should be better!
    import email.Parser
    fname = self.createMessage("cur", True)
    n = 0
    with open(fname) as fp:
        for msg in mailbox.PortableUnixMailbox(fp,
                                               email.Parser.Parser().parse):
            n += 1
            self.assertEqual(msg["subject"], "Simple Test")
            self.assertEqual(len(str(msg)), len(FROM_)+len(DUMMY_MESSAGE))
    self.assertEqual(n, 1)