def __init__(self, name, host='127.0.0.1', port=27017):
        self.name = name
        self.host = host
        self.port = port
def _option_suite(self, value):
        opt = Optional(value)
        self.assert_(isinstance(opt, Optional))
        self.assert_(isinstance(deoption(opt), type(value)))
        self.assertEqual(deoption(opt), value)