def test_converge_with_image_declared_volume(self): service = Service( project='composetest', name='db', client=self.client, build='tests/fixtures/dockerfile-with-volume', ) old_container = create_and_start_container(service) self.assertEqual(old_container.get('Volumes').keys(), ['/data']) volume_path = old_container.get('Volumes')['/data'] new_container = service.converge()[0] self.assertEqual(new_container.get('Volumes').keys(), ['/data']) self.assertEqual(new_container.get('Volumes')['/data'], volume_path)