self = <swh.storage.tests.test_in_memory.TestInMemoryStorage object at 0x7f38847c3dd8> swh_storage = <swh.storage.in_memory.InMemoryStorage object at 0x7f388ab95400> sample_data = <swh.storage.tests.storage_data.StorageData object at 0x7f3850b80f60> def test_snapshot_add_get_branch_by_type(self, swh_storage, sample_data): complete_snapshot = sample_data.snapshots[2] snapshot = complete_snapshot.to_dict() alias1 = b"alias1" alias2 = b"alias2" target1 = random.choice(list(snapshot["branches"].keys())) target2 = random.choice(list(snapshot["branches"].keys())) snapshot["branches"][alias2] = { "target": target2, "target_type": "alias", } snapshot["branches"][alias1] = { "target": target1, "target_type": "alias", } new_snapshot = Snapshot.from_dict(snapshot) > swh_storage.snapshot_add([new_snapshot]) .tox/py3/lib/python3.7/site-packages/swh/storage/tests/storage_tests.py:3264: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ self = <swh.storage.in_memory.InMemoryStorage object at 0x7f388ab95400> snapshots = [Snapshot(branches=ImmutableDict({b'directory': SnapshotBranch(target=b'RV\xe8V\xa0\xa0\x89\x89f\xd6\xba\x14\xfe\xb48\...sion', target_type=<TargetType.ALIAS: 'alias'>)}), id=b'\xdb\x99\xfd\xa2[C\xdc\\\xd9\x06%\xeeK\x07Du\x17\x99\xc9\x17')] def snapshot_add(self, snapshots: List[Snapshot]) -> Dict: > 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:668: AttributeError