InvalidBasesError: Cannot resolve bases for []

Question

When I run tests I get this error during database initialization:

django.db.migrations.state.InvalidBasesError: Cannot resolve bases for [

        

Answer 1

If this is only happening when running python manage.py test (maybe because you have already made the necessary migrations), you should explicitly say that contrib.auth should not migrate in the MIGRATION_MODULES of your settings module.

MIGRATION_MODULES(
        'auth': "contrib.auth.migrations_not_used_in_tests",
)