'Use L{Options} to parse a single service configuration parameter and
verify that an endpoint of the correct type is added to the list for
that service.'

def _endpointTest(self, service):

    options = Options()
    options.parseOptions([('--' + service), 'tcp:1234'])
    self.assertEqual(len(options[service]), 1)
    self.assertIsInstance(options[service][0], endpoints.TCP4ServerEndpoint)
