self = <swh.storage.tests.test_cassandra.TestCassandraStorage object at 0x7fbff465cb38> swh_storage = <swh.storage.cassandra.storage.CassandraStorage object at 0x7fbff40c4438> sample_data = <swh.storage.tests.storage_data.StorageData object at 0x7fbfac680630> def test_content_find_with_duplicate_blake2s256(self, swh_storage, sample_data): content = sample_data.content # Create fake data with colliding sha256 and blake2s256 sha1_array = bytearray(content.sha1) sha1_array[0] += 1 sha1git_array = bytearray(content.sha1_git) sha1git_array[0] += 1 sha256_array = bytearray(content.sha256) sha256_array[0] += 1 duplicated_content = attr.evolve( content, sha1=bytes(sha1_array), sha1_git=bytes(sha1git_array), sha256=bytes(sha256_array), ) swh_storage.content_add([content, duplicated_content]) actual_result = list( swh_storage.content_find({"blake2s256": duplicated_content.blake2s256}) ) expected_content = content.to_dict() expected_duplicated_content = duplicated_content.to_dict() for key in ["data", "ctime"]: # so we can compare for dict_ in [ expected_content, expected_duplicated_content, actual_result[0], actual_result[1], ]: dict_.pop(key, None) expected_result = [expected_content, expected_duplicated_content] for actual_result in expected_result: > assert actual_result in actual_result E TypeError: unhashable type: 'dict' .tox/py3/lib/python3.7/site-packages/swh/storage/tests/test_storage.py:3086: TypeError