self = <swh.storage.tests.test_in_memory.TestInMemoryStorage object at 0x7fb6344ea940> swh_storage = <swh.storage.in_memory.InMemoryStorage object at 0x7fb6344eac50> sample_data = <swh.storage.tests.storage_data.StorageData object at 0x7fb635dfe198> 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 0x7fb6344eac50> revisions = [Revision(message=b'hello', author=Person(fullname=b'Nicolas Dandrimont <nicolas@example.com> ', name=b'Nicolas Dandri...d^\xf2Q\x1b,\xad\xda#zh\xad\xbb\x12',), id=b'\xdfzoj\x99g\x1f\xb7\xf746A\xaf\xf9\x83\xa3\x14\xefaa', extra_headers=())] def revision_add(self, revisions: List[Revision]) -> Dict: # Filter-out revisions already in the database > if self._check_missing: E AttributeError: 'InMemoryStorage' object has no attribute '_check_missing' .tox/py3/lib/python3.7/site-packages/swh/storage/cassandra/storage.py:523: AttributeError