1 files changed, 22 insertions, 0 deletions
diff --git a/tests/regressiontests/one_to_one_regress/tests.py b/tests/regressiontests/one_to_one_regress/tests.py
new file mode 100644
index 0000000000..a0a0c0584f
--- /dev/null
+++ b/tests/regressiontests/one_to_one_regress/tests.py
@@ -0,0 +1,22 @@
+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)