def test_add_with_GET_args(self):
        response = self.client.get(reverse('admin_custom_urls:admin_custom_urls_action_add'), {'name': 'My Action'})
        self.assertContains(response, 'value="My Action"')
Ensure GET on the add_view plus specifying a field value in the query
dataset/ETHPy150Open django/django/tests/admin_custom_urls/tests.py/AdminCustomUrlsTest.test_add_with_GET_args