'Test that downloading a message with a smaller index than the current
LAST response doesn\'t change the LAST response.'

def testHighestOnlyProgresses(self):

    p = self.pop3Server
    s = self.pop3Transport
    p.mbox.messages.append(self.extraMessage)
    p.lineReceived('RETR    2')
    self._flush()
    p.lineReceived('TOP    1    10')
    self._flush()
    s.truncate(0)
    p.lineReceived('LAST')
    self.assertEqual(s.getvalue(), '+OK    2\r\n')
