self = <swh.storage.tests.test_in_memory.TestInMemoryStorage object at 0x7f3887a39b70> swh_storage = <swh.storage.in_memory.InMemoryStorage object at 0x7f3868cb50b8> sample_data = <swh.storage.tests.storage_data.StorageData object at 0x7f3884762940> def test_origin_visit_get_by(self, swh_storage, sample_data): snapshot = sample_data.snapshot origins = sample_data.origins[:2] > swh_storage.origin_add(origins) .tox/py3/lib/python3.7/site-packages/swh/storage/tests/storage_tests.py:2331: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ self = <swh.storage.in_memory.InMemoryStorage object at 0x7f3868cb50b8> origins = (Origin(url='https://github.com/user1/repo1'), Origin(url='https://github.com/user2/repo1')) def origin_add(self, origins: List[Origin]) -> Dict[str, int]: > if not self._allow_overwrite: E AttributeError: 'InMemoryStorage' object has no attribute '_allow_overwrite' .tox/py3/lib/python3.7/site-packages/swh/storage/cassandra/storage.py:940: AttributeError