def test_requestAvatarId(self):
        checker = SSHProtocolChecker()
        passwordDatabase = InMemoryUsernamePasswordDatabaseDontUse()
        passwordDatabase.addUser('test', 'test')
        checker.registerChecker(passwordDatabase)
        d = checker.requestAvatarId(UsernamePassword('test', 'test'))
        def _callback(avatarId):
            self.assertEquals(avatarId, 'test')
        return d.addCallback(_callback)
L{SSHProtocolChecker.requestAvatarId} should defer to one if its
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/conch/test/test_checkers.py/SSHProtocolCheckerTestCase.test_requestAvatarId