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from __future__ import absolute_import
from django.test import TestCase
from .models import RelatedModel, RestrictedModel, OneToOneRestrictedModel
class CustomManagersRegressTestCase(TestCase):
def test_filtered_default_manager(self):
"""Even though the default manager filters out some records,
we must still be able to save (particularly, save by updating
existing records) those filtered instances. This is a
regression test for #8990, #9527"""
related = RelatedModel.objects.create(name="xyzzy")
obj = RestrictedModel.objects.create(name="hidden", related=related)
obj.name = "still hidden"
obj.save()
# If the hidden object wasn't seen during the save process,
# there would now be two objects in the database.
self.assertEqual(RestrictedModel.plain_manager.count(), 1)
def test_delete_related_on_filtered_manager(self):
"""Deleting related objects should also not be distracted by a
restricted manager on the related object. This is a regression
test for #2698."""
related = RelatedModel.objects.create(name="xyzzy")
for name, public in (('one', True), ('two', False), ('three', False)):
RestrictedModel.objects.create(name=name, is_public=public, related=related)
obj = RelatedModel.objects.get(name="xyzzy")
obj.delete()
# All of the RestrictedModel instances should have been
# deleted, since they *all* pointed to the RelatedModel. If
# the default manager is used, only the public one will be
# deleted.
self.assertEqual(len(RestrictedModel.plain_manager.all()), 0)
def test_delete_one_to_one_manager(self):
# The same test case as the last one, but for one-to-one
# models, which are implemented slightly different internally,
# so it's a different code path.
obj = RelatedModel.objects.create(name="xyzzy")
OneToOneRestrictedModel.objects.create(name="foo", is_public=False, related=obj)
obj = RelatedModel.objects.get(name="xyzzy")
obj.delete()
self.assertEqual(len(OneToOneRestrictedModel.plain_manager.all()), 0)
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