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Diffstat (limited to 'tests/foreign_object')
| -rw-r--r-- | tests/foreign_object/tests.py | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/tests/foreign_object/tests.py b/tests/foreign_object/tests.py index c9e8da5792..2d3aa800f7 100644 --- a/tests/foreign_object/tests.py +++ b/tests/foreign_object/tests.py @@ -223,6 +223,13 @@ class MultiColumnFKTests(TestCase): [m2], ) + def test_query_does_not_mutate(self): + """ + Recompiling the same subquery doesn't mutate it. + """ + queryset = Friendship.objects.filter(to_friend__in=Person.objects.all()) + self.assertEqual(str(queryset.query), str(queryset.query)) + def test_select_related_foreignkey_forward_works(self): Membership.objects.create( membership_country=self.usa, person=self.bob, group=self.cia |