From 910638fc4e4f83bda31dd91db5017acb06dfc8d2 Mon Sep 17 00:00:00 2001
From: Edward Henderson <kutenai@me.com>
Date: Tue, 14 Apr 2015 08:51:48 -0600
Subject: [PATCH] Refs #24385 -- Added tests for distinct sum issue fixed in
c7fd9b242d2d63406f1de6cc3204e35aaa025233
---
tests/aggregation/tests.py | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/tests/aggregation/tests.py b/tests/aggregation/tests.py
index 424b7a7ccc..3e2bc2eb30 100644
--- a/tests/aggregation/tests.py
+++ b/tests/aggregation/tests.py
@@ -441,6 +441,20 @@ class AggregateTestCase(TestCase):
vals = Book.objects.annotate(num_authors=Count("authors__id")).aggregate(Avg("num_authors"))
self.assertEqual(vals, {"num_authors__avg": Approximate(1.66, places=1)})
+ def test_sum_distinct_aggregate(self):
+ """
+ Sum on a distict() QuerySet should aggregate only the distinct items.
+ """
+ authors = Author.objects.filter(book__in=[5, 6])
+ self.assertEqual(authors.count(), 3)
+
+ distinct_authors = authors.distinct()
+ self.assertEqual(distinct_authors.count(), 2)
+
+ # Selected author ages are 57 and 46
+ age_sum = distinct_authors.aggregate(Sum('age'))
+ self.assertEqual(age_sum['age__sum'], 103)
+
def test_filtering(self):
p = Publisher.objects.create(name='Expensive Publisher', num_awards=0)
Book.objects.create(