def tearDown(self):
        os.close(self.db_fd)
        os.unlink(flaskr.app.config['DATABASE'])
``BlockDeviceDeployer.discover_state`` returns a ``NodeState`` with
dataset/ETHPy150Open dag/flask-genshi/examples/flaskr/flaskr_tests.py/FlaskrTestCase.tearDown--crossover with--dataset/ETHPy150Open ClusterHQ/flocker/flocker/node/agents/test/test_blockdevice.py/BlockDeviceDeployerDiscoverStateTests.test_no_devices