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Fixed #19263 -- Fixed crash when filtering using __in and an empty QuerySet.

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Thanks Marcin Biernat for the initial patch and tests.
This commit is contained in:
Tim Graham 2015-08-15 19:05:42 -04:00
parent 7c0850028f
commit 233b46f931
2 changed files with 13 additions and 1 deletions
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9
tests/queries/tests.py
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@ -2362,6 +2362,9 @@ class WeirdQuerysetSlicingTests(BaseQuerysetTest):
Article.objects.create(name='three', created=datetime.datetime.now())
Article.objects.create(name='four', created=datetime.datetime.now())
food = Food.objects.create(name='spam')
Eaten.objects.create(meal='spam with eggs', food=food)
def test_tickets_7698_10202(self):
# People like to slice with '0' as the high-water mark.
self.assertQuerysetEqual(Article.objects.all()[0:0], [])
@ -2377,6 +2380,12 @@ class WeirdQuerysetSlicingTests(BaseQuerysetTest):
# ticket #12192
self.assertNumQueries(0, lambda: list(Number.objects.all()[1:1]))
def test_empty_sliced_subquery(self):
self.assertEqual(Eaten.objects.filter(food__in=Food.objects.all()[0:0]).count(), 0)
def test_empty_sliced_subquery_exclude(self):
self.assertEqual(Eaten.objects.exclude(food__in=Food.objects.all()[0:0]).count(), 1)
class EscapingTests(TestCase):
def test_ticket_7302(self):