self = <swh.storage.tests.test_in_memory.TestInMemoryStorage object at 0x7f38860e9c50> swh_storage = <swh.storage.in_memory.InMemoryStorage object at 0x7f386a5a7080> sample_data = <swh.storage.tests.storage_data.StorageData object at 0x7f3870a9b198> def test_revision_get_order(self, swh_storage, sample_data): revision, revision2 = sample_data.revisions[:2] > add_result = swh_storage.revision_add([revision, revision2]) .tox/py3/lib/python3.7/site-packages/swh/storage/tests/storage_tests.py:987: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ self = <swh.storage.in_memory.InMemoryStorage object at 0x7f386a5a7080> revisions = [Revision(message=b'hello', author=Person(fullname=b'Nicolas Dandrimont <nicolas@example.com> ', name=b'Nicolas Dandri...1b,\xad\xda#zh\xad\xbb\x12',), id=b'\xa6F\xdd\x94\xc9\x12\x82\x96Y\xb2*\x1e~\x14=/\xa5\xeb\xde\x1b', extra_headers=())] def revision_add(self, revisions: List[Revision]) -> Dict: # Filter-out revisions already in the database > 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:526: AttributeError