'Admin inline should invoke local callable when its name is listed in readonly_fields'

def test_callable_lookup(self):

    response = self.client.get(reverse('admin:admin_inlines_poll_add'))
    self.assertEqual(response.status_code, 200)
    self.assertContains(response, '<div    class="js-inline-admin-formset    inline-group"    id="question_set-group"')
    self.assertContains(response, '<p>Callable    in    QuestionInline</p>')
