Ticket #24421: test_bug.py

from django.db import models
from django.test.testcases import TestCase


class MyModel(models.Model):
    group_id = models.PositiveIntegerField()
    user_id = models.PositiveIntegerField()
    other_id = models.PositiveIntegerField(null=True)
    other = models.ForeignObject(
        'OtherModel',
        from_fields=('other_id', 'user_id', 'group_id'),
        to_fields=('id', 'user_id', 'group_id'),
        null=True
    )


class OtherModel(models.Model):
    group_id = models.PositiveIntegerField()
    user_id = models.PositiveIntegerField()


class BugTestCase(TestCase):

    def test_bug(self):
        OtherModel.objects.exclude(mymodel__id__in=[1,2,3])[0]