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

This commit is contained in:
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.db import connection
from django.db.models.expressions import Exists, OuterRef
from django.db.models.functions import Substr
from django.test import TestCase, skipUnlessDBFeature
@ -932,3 +933,12 @@ class LookupTests(TestCase):
field = query.model._meta.get_field('nulled_text_field')
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))
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())