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Refs #30462 -- Added test for conditional aggregation on annotated subquery.

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Mariusz Felisiak 2019-05-08 11:29:17 +02:00 committed by GitHub
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commit ef9f2eb69c
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1 changed files with 13 additions and 1 deletions
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14
tests/aggregation/test_filter_argument.py
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@ -1,7 +1,7 @@
import datetime
from decimal import Decimal
from django.db.models import Case, Count, F, Q, Sum, When
from django.db.models import Case, Count, F, OuterRef, Q, Subquery, Sum, When
from django.test import TestCase
from .models import Author, Book, Publisher
@ -95,3 +95,15 @@ class FilteredAggregateTests(TestCase):
cnt=Count('pk', filter=Q(double_age__gt=100)),
)
self.assertEqual(aggs['cnt'], 2)
def test_filtered_aggregate_ref_subquery_annotation(self):
aggs = Author.objects.annotate(
earliest_book_year=Subquery(
Book.objects.filter(
contact__pk=OuterRef('pk'),
).order_by('pubdate').values('pubdate__year')[:1]
),
).aggregate(
cnt=Count('pk', filter=Q(earliest_book_year=2008)),
)
self.assertEqual(aggs['cnt'], 2)