def METHOD_NAME(self):
    instance = self.models[0]
    ordering_field = 1  # field1 in list_display
    preserved_filters = '_changelist_filters=o%%3D%d' % ordering_field
    changelist_url = reverse('admin:%s_%s_change' % (
        TestModel._meta.app_label,
        TestModel._meta.model_name
    ), args=(self.models[1].pk,)) + '?' + preserved_filters
    user = get_user_model().objects.create_user(
        username='admin',
        password='passadmin'
    )
    request = RequestFactory().get(changelist_url)
    request.user = user
    context = {
        'original': instance,
        'preserved_filters': preserved_filters,
        'request': request,
    }
    previous_object = jet_previous_object(context)
    expected_object = None
    self.assertEqual(previous_object, expected_object)