### Proposed change The user, username fixtures [here](https://github.com/jupyterhub/jupyterhub/blob/02de44e55199f3f6fa60a5a9fd06dcbc3bdc7699/jupyterhub/tests/conftest.py#L196-L252) so folks don't need to create test users ### Who would use this feature? Spawners, authenticators Reference https://github.com/jupyterhub/pytest-jupyterhub/issues/65 by @minrk
