When last_version is deleted, do not delete text and previous versions in cascade, but really delete text only when there is no previous version, otherwise update text.last_version with previous version.
from django.test import TestCase
from django.test.client import Client
from django.core import management
from cm.models import *
from cm.security import *
from cm.tests.test_comment_positioning import create_comment
class RegistrationTest(TestCase):
fixtures = ['roles_generic','test_content']
def test_registration(self):
user = UserProfile.objects.create_inactive_user('no@noreply', False)