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Refs #17001 -- Added a test for custom prefetch related queryset on generic relations.

This commit is contained in:
Simon Charette 2016-02-19 12:47:24 -05:00
parent 1d17bb4f7d
commit 5d240b070d
1 changed files with 13 additions and 0 deletions
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13
tests/prefetch_related/tests.py
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@ -836,6 +836,19 @@ class GenericRelationTests(TestCase):
self.assertEqual(sorted([i.tag for i in bookmark.tags.all()]), ["django", "python"])
self.assertEqual([i.tag for i in bookmark.favorite_tags.all()], ["python"])
def test_custom_queryset(self):
bookmark = Bookmark.objects.create(url='http://www.djangoproject.com/')
django_tag = TaggedItem.objects.create(content_object=bookmark, tag='django')
TaggedItem.objects.create(content_object=bookmark, tag='python')
with self.assertNumQueries(2):
bookmark = Bookmark.objects.prefetch_related(
Prefetch('tags', TaggedItem.objects.filter(tag='django')),
).get()
with self.assertNumQueries(0):
self.assertEqual(list(bookmark.tags.all()), [django_tag])
class MultiTableInheritanceTest(TestCase):