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Added a test for updating an annotated queryset.

This commit is contained in:
David Sanders 2016-06-29 12:17:40 -04:00 committed by Tim Graham
parent 18571aefe6
commit 06acb3445f
1 changed files with 20 additions and 0 deletions
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20
tests/update/tests.py
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@ -1,5 +1,7 @@
from __future__ import unicode_literals
from django.core.exceptions import FieldError
from django.db.models import F, Max
from django.test import TestCase
from .models import A, B, Bar, D, DataPoint, Foo, RelatedPoint
@ -138,3 +140,21 @@ class AdvancedTests(TestCase):
self.assertEqual(bar_qs[0].foo_id, a_foo.target)
bar_qs.update(foo=b_foo)
self.assertEqual(bar_qs[0].foo_id, b_foo.target)
def test_update_annotated_queryset(self):
"""
Update of a queryset that's been annotated.
"""
# Trivial annotated update
qs = DataPoint.objects.annotate(alias=F('value'))
self.assertEqual(qs.update(another_value='foo'), 3)
# Update where annotation is used for filtering
qs = DataPoint.objects.annotate(alias=F('value')).filter(alias='apple')
self.assertEqual(qs.update(another_value='foo'), 1)
# Update where annotation is used in update parameters
qs = DataPoint.objects.annotate(alias=F('value'))
self.assertEqual(qs.update(another_value=F('alias')), 3)
# Update where aggregation annotation is used in update parameters
qs = DataPoint.objects.annotate(max=Max('value'))
with self.assertRaisesMessage(FieldError, 'Aggregate functions are not allowed in this query'):
qs.update(another_value=F('max'))