self = <swh.storage.tests.test_in_memory.TestInMemoryStorage object at 0x7f3865ac7198> swh_storage = <swh.storage.in_memory.InMemoryStorage object at 0x7f3845cd86a0> sample_data = <swh.storage.tests.storage_data.StorageData object at 0x7f3845cd8710> def test_directory_add_twice(self, swh_storage, sample_data): directory = sample_data.directories[1] > actual_result = swh_storage.directory_add([directory]) .tox/py3/lib/python3.7/site-packages/swh/storage/tests/storage_tests.py:708: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ self = <swh.storage.in_memory.InMemoryStorage object at 0x7f3845cd86a0> directories = [Directory(entries=(DirectoryEntry(name=b'foo', type='file', target=b'\xd8\x1c\xc0q\x0e\xb6\xcf\x9e\xfd[\x92\n\x84S\xe...x04', perms=<DentryPerms.directory: 16384>)), id=b'RV\xe8V\xa0\xa0\x89\x89f\xd6\xba\x14\xfe\xb48\x8b\x8b\x82\xd3\x02')] def directory_add(self, directories: List[Directory]) -> Dict: to_add = {d.id: d for d in directories}.values() > 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:400: AttributeError