credentials = {'cgit': {'pypi': [{'password': 'pass', 'username': 'user'}]}} expected_credentials = [{'password': 'pass', 'username': 'user'}] swh_scheduler = <swh.scheduler.backend.SchedulerBackend object at 0x7f76cccc1898> @pytest.mark.parametrize( "credentials, expected_credentials", [ (None, []), ({"key": "value"}, []), ( {"cgit": {"pypi": [{"username": "user", "password": "pass"}]}}, [{"username": "user", "password": "pass"}], ), ], ) def test_lister_cgit_instantiation_with_credentials( credentials, expected_credentials, swh_scheduler ): lister = PyPILister(swh_scheduler, credentials=credentials) # Credentials are allowed in constructor > assert lister.credentials == expected_credentials E AssertionError: assert [] == [{'password':...ame': 'user'}] E Right contains one more item: {'password': 'pass', 'username': 'user'} E Full diff: E - [{'password': 'pass', 'username': 'user'}] E + [] .tox/py3/lib/python3.7/site-packages/swh/lister/pypi/tests/test_lister.py:100: AssertionError