def test_discover_one(self):
        self._verify_discover_state_applications({APP_NAME: UNIT_FOR_APP},
                                                 [APP])
``ApplicationNodeDeployer.discover_state`` returns ``NodeState``
dataset/ETHPy150Open ClusterHQ/flocker/flocker/node/test/test_container.py/ApplicationNodeDeployerDiscoverNodeConfigurationTests.test_discover_one