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Fixed #30548 -- Improved exception when expression contains mixed types.

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CruxBox 2019-06-10 03:32:40 +05:30 • committed by Mariusz Felisiak
parent 03cd3d137e
commit 34f8eeea4a
2 changed files with 13 additions and 3 deletions
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5
tests/aggregation/tests.py
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@ -884,7 +884,10 @@ class AggregateTestCase(TestCase):
self.assertEqual(p2, {'avg_price': Approximate(Decimal('53.39'), places=2)})
def test_combine_different_types(self):
msg = 'Expression contains mixed types. You must set output_field.'
msg = (
'Expression contains mixed types: FloatField, IntegerField. '
'You must set output_field.'
)
qs = Book.objects.annotate(sums=Sum('rating') + Sum('pages') + Sum('price'))
with self.assertRaisesMessage(FieldError, msg):
qs.first()