code: def test_should_respond_200_application_json(self, mock_as_dict):
      response = self.client.get(
          "/api/v1/config/section/smtp/option/smtp_mail_from",
          headers={"Accept": "application/json"},
          environ_overrides={"REMOTE_USER": "test"},
      )
      assert response.status_code == 200
      expected = {
          "sections": [
              {
                  "name": "smtp",
                  "options": [
                      {
                          "key": "smtp_mail_from",
                          "value": "airflow@example.com",
                      },
                  ],
              },
          ]
      }
      assert expected == response.json
  
imports: from __future__ import annotations
  import textwrap
  from unittest.mock import patch
  import pytest
  from airflow.security import permissions
  from tests.test_utils.api_connexion_utils import assert_401, create_user, delete_user
  from tests.test_utils.config import conf_vars
label_desc: Use image node_id 4 for calling the TestGetValue obj's underlying member method code with example usage: obj.test_should_respond_200_application_json(mock_as_dict) without return types