'If a config file exists, the UUID is loaded from it.'

def test_config(self):

    path = self.mktemp()
    service = VolumeService(FilePath(path), FilesystemStoragePool(FilePath(self.mktemp())), reactor=Clock())
    service.startService()
    service2 = VolumeService(FilePath(path), FilesystemStoragePool(FilePath(self.mktemp())), reactor=Clock())
    service2.startService()
    self.assertEqual(service.node_id, service2.node_id)
