support a negative dec operator

2016-12-28 01:44:38 -05:00
parent 91dad4060f
commit d10f34ccc1
2 changed files with 6 additions and 2 deletions
--- a/tests/queryset/queryset.py
+++ b/tests/queryset/queryset.py
@@ -1826,6 +1826,11 @@ class QuerySetTest(unittest.TestCase):
        post.reload()
        self.assertEqual(post.hits, 10)

+        # Negative dec operator is equal to a positive inc operator
+        BlogPost.objects.update_one(dec__hits=-1)
+        post.reload()
+        self.assertEqual(post.hits, 11)
+
        BlogPost.objects.update(push__tags='mongo')
        post.reload()
        self.assertTrue('mongo' in post.tags)