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Code Issues 32 Releases Wiki Activity

Refs #28723 -- Fixed stale prefetch_related cache after add/remove.

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Regression in 514b2c989a.
This commit is contained in:
Jon Dufresne
2018-02-05 08:02:57 -08:00
committed by Tim Graham
parent 16ee53d7bb
commit 8b21878357
3 changed files with 18 additions and 2 deletions
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15
tests/prefetch_related/tests.py
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@@ -1415,6 +1415,21 @@ class DirectPrefechedObjectCacheReuseTests(TestCase):
with self.assertNumQueries(0):
prefetch_related_objects([bookwithyear1], 'bookreview_set')
def test_add_clears_prefetched_objects(self):
bookwithyear = BookWithYear.objects.get(pk=self.bookwithyear1.pk)
prefetch_related_objects([bookwithyear], 'bookreview_set')
self.assertCountEqual(bookwithyear.bookreview_set.all(), [self.bookreview1])
new_review = BookReview.objects.create()
bookwithyear.bookreview_set.add(new_review)
self.assertCountEqual(bookwithyear.bookreview_set.all(), [self.bookreview1, new_review])
def test_remove_clears_prefetched_objects(self):
bookwithyear = BookWithYear.objects.get(pk=self.bookwithyear1.pk)
prefetch_related_objects([bookwithyear], 'bookreview_set')
self.assertCountEqual(bookwithyear.bookreview_set.all(), [self.bookreview1])
bookwithyear.bookreview_set.remove(self.bookreview1)
self.assertCountEqual(bookwithyear.bookreview_set.all(), [])
class ReadPrefetchedObjectsCacheTests(TestCase):
@classmethod