When I run tests I get this error during database initialization:
django.db.migrations.state.InvalidBasesError: Cannot resolve bases for [<ModelState: 'users.GroupProxy'>] This can happen if you are inheriting models from an app with migrations (e.g. contrib.auth)
I created this proxy for contrib.auth Group model to place it in my app in django admin:
class GroupProxy(Group): class Meta: proxy = True verbose_name = Group._meta.verbose_name verbose_name_plural = Group._meta.verbose_name_plural
So what can I do to fix this issue?
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Answer
After a lot of digging on this the only thing that worked for me was
comment out the offending apps, run migrations, then add them in again.
Just a workaround but hopefully it helps somebody.