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Refs #25367 -- Added test for Exists() lookup rhs.

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Simon Charette 2019-08-11 19:42:27 -04:00 committed by Mariusz Felisiak
parent 088a6fab1c
commit f7e9db14bb
1 changed files with 10 additions and 0 deletions
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10
tests/lookup/tests.py
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@ -5,6 +5,7 @@ from operator import attrgetter
from django.core.exceptions import FieldError from django.core.exceptions import FieldError
from django.db import connection from django.db import connection
from django.db.models.expressions import Exists, OuterRef
from django.db.models.functions import Substr from django.db.models.functions import Substr
from django.test import TestCase, skipUnlessDBFeature from django.test import TestCase, skipUnlessDBFeature
@ -932,3 +933,12 @@ class LookupTests(TestCase):
field = query.model._meta.get_field('nulled_text_field') field = query.model._meta.get_field('nulled_text_field')
self.assertIsInstance(query.build_lookup(['isnull_none_rhs'], field, None), IsNullWithNoneAsRHS) self.assertIsInstance(query.build_lookup(['isnull_none_rhs'], field, None), IsNullWithNoneAsRHS)
self.assertTrue(Season.objects.filter(pk=season.pk, nulled_text_field__isnull_none_rhs=True)) self.assertTrue(Season.objects.filter(pk=season.pk, nulled_text_field__isnull_none_rhs=True))
def test_exact_exists(self):
qs = Article.objects.filter(pk=OuterRef('pk'))
seasons = Season.objects.annotate(
pk_exists=Exists(qs),
).filter(
pk_exists=Exists(qs),
)
self.assertCountEqual(seasons, Season.objects.all())