From a8598c7de2d600fa4c3b4e6d80c2fafb9063215b Mon Sep 17 00:00:00 2001
From: Ramiro Morales <cramm0@gmail.com>
Date: Sat, 21 May 2011 16:54:25 +0000
Subject: Fixed #11789 -- Fixed aggregates so it interacts with QuerySet none()
 in a way consistent with other empty query sets. Thanks alexr for the report
 and patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16254 bcc190cf-cafb-0310-a4f2-bffc1f526a37
---
 tests/regressiontests/aggregation_regress/tests.py | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'tests')

diff --git a/tests/regressiontests/aggregation_regress/tests.py b/tests/regressiontests/aggregation_regress/tests.py
index 15692b6422..49e1e611e9 100644
--- a/tests/regressiontests/aggregation_regress/tests.py
+++ b/tests/regressiontests/aggregation_regress/tests.py
@@ -662,6 +662,13 @@ class AggregationTests(TestCase):
             {"pk__count": None}
         )
 
+    def test_none_call_before_aggregate(self):
+        # Regression for #11789
+        self.assertEqual(
+            Author.objects.none().aggregate(Avg('age')),
+            {'age__avg': None}
+        )
+
     def test_annotate_and_join(self):
         self.assertEqual(
             Author.objects.annotate(c=Count("friends__name")).exclude(friends__name="Joe").count(),
-- 
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