def test_find_previous_service_containers(self, mock_find_service_containers):
self.mock_container.name = 'foo-bar'
mock_find_service_containers.return_value = {'foo-bar': self.mock_container}
self.mock_service.containers = []
self.mock_urlparse.return_value.scheme = 'http'
container_ship = ContainerShip(address='http://127.0.0.1:2376', **{})
self.assertTrue('foo-bar' in container_ship.find_previous_service_containers(service=self.mock_service))
