def test_basic_add_GET(self):
        add_url = reverse('admin_custom_urls:admin_custom_urls_action_add')
        self.assertTrue(add_url.endswith('/!add/'))
        response = self.client.get(add_url)
        self.assertIsInstance(response, TemplateResponse)
        self.assertEqual(response.status_code, 200)
Ensure GET on the add_view works.
dataset/ETHPy150Open django/django/tests/admin_custom_urls/tests.py/AdminCustomUrlsTest.test_basic_add_GET