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Refs #24385 -- Added tests for distinct sum issue fixed in c7fd9b242d

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Edward Henderson 2015-04-14 08:51:48 -06:00 committed by Tim Graham
parent d72e0178e9
commit 910638fc4e
1 changed files with 14 additions and 0 deletions
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14
tests/aggregation/tests.py
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@ -441,6 +441,20 @@ class AggregateTestCase(TestCase):
vals = Book.objects.annotate(num_authors=Count("authors__id")).aggregate(Avg("num_authors")) vals = Book.objects.annotate(num_authors=Count("authors__id")).aggregate(Avg("num_authors"))
self.assertEqual(vals, {"num_authors__avg": Approximate(1.66, places=1)}) 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): def test_filtering(self):
p = Publisher.objects.create(name='Expensive Publisher', num_awards=0) p = Publisher.objects.create(name='Expensive Publisher', num_awards=0)
Book.objects.create( Book.objects.create(