swh_storage = <swh.storage.in_memory.InMemoryStorage object at 0x7fa91bcc8208> sample_data = <swh.storage.tests.storage_data.StorageData object at 0x7fa919aeb898> def test_snapshot_get_latest_none(swh_storage, sample_data): """Retrieve latest snapshot on unknown origin or origin without snapshot should yield no result """ # unknown origin so None assert snapshot_get_latest(swh_storage, "unknown-origin") is None # no snapshot on origin visit so None origin = sample_data.origin > swh_storage.origin_add([origin]) .tox/py3/lib/python3.7/site-packages/swh/storage/tests/algos/test_snapshot.py:68: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ self = <swh.storage.in_memory.InMemoryStorage object at 0x7fa91bcc8208> origins = [Origin(url='https://github.com/user1/repo1')] def origin_add(self, origins: List[Origin]) -> Dict[str, int]: > 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:937: AttributeError