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from django.test import TestCase
from regressiontests.one_to_one_regress.models import Place, UndergroundBar
class OneToOneDeletionTests(TestCase):
def test_reverse_relationship_cache_cascade(self):
"""
Regression test for #9023: accessing the reverse relationship shouldn't
result in a cascading delete().
"""
place = Place.objects.create(name="Dempsey's", address="623 Vermont St")
bar = UndergroundBar.objects.create(place=place, serves_cocktails=False)
# The bug in #9023: if you access the one-to-one relation *before*
# setting to None and deleting, the cascade happens anyway.
place.undergroundbar
bar.place.name='foo'
bar.place = None
bar.save()
place.delete()
self.assertEqual(Place.objects.all().count(), 0)
self.assertEqual(UndergroundBar.objects.all().count(), 1)
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