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Diffstat (limited to 'tests/prefetch_related/tests.py')
| -rw-r--r-- | tests/prefetch_related/tests.py | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/tests/prefetch_related/tests.py b/tests/prefetch_related/tests.py index 856f766d30..99e3cd6b80 100644 --- a/tests/prefetch_related/tests.py +++ b/tests/prefetch_related/tests.py @@ -1257,6 +1257,20 @@ class GenericRelationTests(TestCase): ], ) + def test_reverse_generic_relation(self): + # Create two distinct bookmarks to ensure the bookmark and + # tagged item models primary are offset. + first_bookmark = Bookmark.objects.create() + second_bookmark = Bookmark.objects.create() + TaggedItem.objects.create( + content_object=first_bookmark, favorite=second_bookmark + ) + with self.assertNumQueries(2): + obj = TaggedItem.objects.prefetch_related("favorite_bookmarks").get() + with self.assertNumQueries(0): + prefetched_bookmarks = obj.favorite_bookmarks.all() + self.assertQuerySetEqual(prefetched_bookmarks, [second_bookmark]) + class MultiTableInheritanceTest(TestCase): @classmethod |
