Guess SETTINGS_MODULE is is set to None (in tests)
Guess SETTINGS_MODULE is is set to None (in tests)

When testing and using override_settings(), SETTINGS_MODULE is reset, so in case it is set to None, we try to guess it via the DJANGO_SETTINGS_MODULE env var.

mbi/django-rosetta,mbi/django-rosetta,mbi/django-rosetta,mbi/django-rosetta