Refs #27849 -- Added test for filtered aggregates with empty conditions.

1 files changed, 13 insertions, 0 deletions

diff --git a/tests/aggregation/test_filter_argument.py b/tests/aggregation/test_filter_argument.py
index f55e06dfa0..caf2cd3d6f 100644
--- a/tests/aggregation/test_filter_argument.py
+++ b/tests/aggregation/test_filter_argument.py
@@ -192,3 +192,16 @@ class FilteredAggregateTests(TestCase):
             ),
         )
         self.assertEqual(aggregate, {"max_rating": 4.5})
+
+    def test_filtered_aggregate_empty_condition(self):
+        book = Book.objects.annotate(
+            authors_count=Count(
+                "authors",
+                filter=Q(authors__in=[]),
+            ),
+        ).get(pk=self.b1.pk)
+        self.assertEqual(book.authors_count, 0)
+        aggregate = Book.objects.aggregate(
+            max_rating=Max("rating", filter=Q(rating__in=[]))
+        )
+        self.assertEqual(aggregate, {"max_rating": None})