Extend taggable-mixin to support different Tag models.
Usage is pretty simple. Tag model is default in Taggable constructor but you
can call it with different model like GHOPTaskType that inherits from Tag model.
Both Taggable and Tag models have been updated and they don't use hardcoded Tag
model anymore and instead use cls of class methods or self.__class__. In case
of Taggable it's self.__tag_model.
BASIC_TESTS = """
>>> from django.contrib.auth.models import User, AnonymousUser
>>> u = User.objects.create_user('testuser', 'test@example.com', 'testpw')
>>> u.has_usable_password()
True
>>> u.check_password('bad')
False
>>> u.check_password('testpw')
True
>>> u.set_unusable_password()
>>> u.save()
>>> u.check_password('testpw')
False
>>> u.has_usable_password()
False
>>> u2 = User.objects.create_user('testuser2', 'test2@example.com')
>>> u2.has_usable_password()
False
>>> u.is_authenticated()
True
>>> u.is_staff
False
>>> u.is_active
True
>>> a = AnonymousUser()
>>> a.is_authenticated()
False
>>> a.is_staff
False
>>> a.is_active
False
>>> a.groups.all()
[]
>>> a.user_permissions.all()
[]
#
# Tests for createsuperuser management command.
# It's nearly impossible to test the interactive mode -- a command test helper
# would be needed (and *awesome*) -- so just test the non-interactive mode.
# This covers most of the important validation, but not all.
#
>>> from django.core.management import call_command
>>> call_command("createsuperuser", noinput=True, username="joe", email="joe@somewhere.org")
Superuser created successfully.
>>> u = User.objects.get(username="joe")
>>> u.email
u'joe@somewhere.org'
>>> u.password
u'!'
"""