self = <swh.storage.tests.test_in_memory.TestInMemoryStorage object at 0x7fb61244e278> swh_storage = <swh.storage.in_memory.InMemoryStorage object at 0x7fb61244e5c0> sample_data = <swh.storage.tests.storage_data.StorageData object at 0x7fb616fe5d30> def test_release_get(self, swh_storage, sample_data): release, release2, release3 = sample_data.releases[:3] # given > swh_storage.release_add([release, release2]) .tox/py3/lib/python3.7/site-packages/swh/storage/tests/storage_tests.py:1341: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ self = <swh.storage.in_memory.InMemoryStorage object at 0x7fb61244e5c0> releases = [Release(name=b'v0.0.1', message=b'synthetic release', target=b'\x01\xa7\x11O6\xfd\xdd^\xf2Q\x1b,\xad\xda#zh\xad\xbb\x...econds=0), offset=-120, negative_utc=False), metadata=None, id=b'i\x02\xbdL\x82\xb7\xd1\x9aB\x1d"J\xed\xab+t\x19~B\r')] def release_add(self, releases: List[Release]) -> Dict: > 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:635: AttributeError