Refs #25745 -- Isolated an order_with_respect_to test.

from operator import attrgetter

from django.apps.registry import Apps

from django.db import models

from django.test import TestCase

        self.assertSequenceEqual(p1.get_post_order(), [p1_1.pk, p1_2.pk, p1_3.pk])

    def test_duplicate_order_field(self):

        test_apps = Apps(['order_with_respect_to'])

        class Bar(models.Model):

            class Meta:

                apps = test_apps

                app_label = 'order_with_respect_to'

        class Foo(models.Model):

            class Meta:

                order_with_respect_to = 'bar'

                apps = test_apps

                app_label = 'order_with_respect_to'

        count = 0