Defined output_field of Func() in test_grouping_by_annotations_with_array_field_param().
output_field cannot be automatically determined because the first
argument passed to ARRAY_LEN is an ArrayField and the second one is an
integer.
@@ -489,7 +489,9 @@ class TestQuerying(PostgreSQLTestCase):
value = models.Value([1], output_field=ArrayField(models.IntegerField()))
self.assertEqual(
NullableIntegerArrayModel.objects.annotate(
- array_length=models.Func(value, 1, function='ARRAY_LENGTH'),
+ array_length=models.Func(
+ value, 1, function='ARRAY_LENGTH', output_field=models.IntegerField(),
+ ),
).values('array_length').annotate(
count=models.Count('pk'),
).get()['array_length'],
