Hello @TonyFlury! I would personally find these very helpful (as a Django user), but as a Django developer I think that the proposed assertions are a bit overly specialized code to be suitable to add next to the current testing helpers.
My first reaction when reading this post is “this would be an amazing third party app”. Have you, by any chance, check if there is something similar our there? I know that there is GitHub - revsys/django-test-plus: Useful additions to Django's default TestCase for example.
Thanks! Natalia.