'When ``cluster_updated()`` is called a ``_StatusUpdate`` input is
passed to the cluster status FSM.'

def test_cluster_updated(self):

    service = self.service
    service.cluster_status = fsm = StubFSM()
    config = Deployment()
    state = DeploymentState(nodes=[self.node_state], node_uuid_to_era={self.deployer.node_uuid: self.service.era})
    service.cluster_updated(config, state)
    self.assertEqual(fsm.inputted, [_StatusUpdate(configuration=config, state=state)])
