self = <swh.storage.tests.test_cassandra.TestCassandraStorage object at 0x7fb4111b10f0> swh_storage = <swh.storage.cassandra.storage.CassandraStorage object at 0x7fb4111ada20> sample_data = <swh.storage.tests.storage_data.StorageData object at 0x7fb405f5c5c0> def test_object_find_by_sha1_git(self, swh_storage, sample_data): content = sample_data.content directory = sample_data.directory revision = sample_data.revision release = sample_data.release sha1_gits = [b"00000000000000000000"] expected = { b"00000000000000000000": [], } swh_storage.content_add([content]) sha1_gits.append(content.sha1_git) expected[content.sha1_git] = [ {"sha1_git": content.sha1_git, "type": "content",} ] swh_storage.directory_add([directory]) sha1_gits.append(directory.id) expected[directory.id] = [{"sha1_git": directory.id, "type": "directory",}] > swh_storage.revision_add([revision]) .tox/py3/lib/python3.7/site-packages/swh/storage/tests/storage_tests.py:3703: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .tox/py3/lib/python3.7/site-packages/swh/storage/cassandra/storage.py:484: in revision_add revisions = list(set(revisions)) <attrs generated hash swh.model.model.Revision>:15: in __hash__ self.extra_headers, _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ self = ImmutableDict({'checksums': {'sha1': 'tarball-sha1', 'sha256': 'tarball-sha256'}, 'signed-off-by': 'some-dude'}) def __hash__(self): > return hash(tuple(sorted(self.data))) E TypeError: unhashable type: 'dict' .tox/py3/lib/python3.7/site-packages/swh/model/collections.py:49: TypeError