Ticket #25772: 25772-test.diff

tests/postgres_tests/test_array.py

@@ -231 +231 @@
             self.objs[0:3]
         )
 
+    def test_len(self):
+        obj = NullableIntegerArrayModel.objects.create(field=[])
+        self.assertSequenceEqual(
+            NullableIntegerArrayModel.objects.filter(field__len=0),
+            [obj]
+        )
+
     def test_slice(self):
         self.assertSequenceEqual(
             NullableIntegerArrayModel.objects.filter(field__0_1=[2]),