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Added more tests for pickling Prefetches with QuerySets.

This commit is contained in:
Adam Chainz 2016-11-23 14:59:43 +00:00 committed by Tim Graham
parent 2e5fbe889f
commit 7dd315a46f
1 changed files with 19 additions and 0 deletions
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19
tests/queryset_pickle/tests.py
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@ -115,6 +115,25 @@ class PickleabilityTestCase(TestCase):
groups = pickle.loads(pickle.dumps(groups))
self.assertSequenceEqual(groups, [g])
def test_pickle_prefetch_queryset_usable_outside_of_prefetch(self):
# Prefetch shouldn't affect the fetch-on-pickle behavior of the
# queryset passed to it.
Group.objects.create(name='foo')
events = Event.objects.order_by('id')
Group.objects.prefetch_related(models.Prefetch('event_set', queryset=events))
with self.assertNumQueries(1):
events2 = pickle.loads(pickle.dumps(events))
with self.assertNumQueries(0):
list(events2)
def test_pickle_prefetch_queryset_still_usable(self):
g = Group.objects.create(name='foo')
groups = Group.objects.prefetch_related(
models.Prefetch('event_set', queryset=Event.objects.order_by('id'))
)
groups2 = pickle.loads(pickle.dumps(groups))
self.assertSequenceEqual(groups2.filter(id__gte=0), [g])
def test_pickle_prefetch_related_with_m2m_and_objects_deletion(self):
"""
#24831 -- Cached properties on ManyToOneRel created in QuerySet.delete()