sample_data = <swh.storage.tests.storage_data.StorageData object at 0x7f472264a978> def test_buffering_proxy_storage_snapshot_deduplicate(sample_data) -> None: snapshots = sample_data.snapshots[:2] storage = get_storage_with_buffer_config(min_batch_size={"snapshot": 2,}) s = storage.snapshot_add([snapshots[0], snapshots[0]]) assert s == {} s = storage.snapshot_add([snapshots[0]]) assert s == {} > s = storage.snapshot_add([snapshots[1]]) .tox/py3/lib/python3.7/site-packages/swh/storage/tests/test_buffer.py:462: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .tox/py3/lib/python3.7/site-packages/swh/storage/buffer.py:138: in object_add return self.flush() .tox/py3/lib/python3.7/site-packages/swh/storage/buffer.py:156: in flush stats = add_fn(list(batch)) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ self = <swh.storage.in_memory.InMemoryStorage object at 0x7f472264ab00> snapshots = [Snapshot(branches=ImmutableDict({b'master': SnapshotBranch(target=b'\x01\xa7\x11O6\xfd\xdd^\xf2Q\x1b,\xad\xda#zh\xad\...x\x8e'), Snapshot(branches=ImmutableDict({}), id=b'\x1a\x88\x93\xe6\xa8oDN\x8b\xe8\xe7\xbd\xa6\xcb4\xfb\x175\xa0\x0e')] 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