在反应烟雾测试期间引发“缺少 cookie 标头或对象”错误（Create-react-app）

Posted 2023-02-19

【中文标题】在反应烟雾测试期间引发“缺少 cookie 标头或对象”错误（Create-react-app）

【英文标题】："Missing the cookie header or object" error thrown during react smoke tests (Create-react-app)

【发布时间】：2017-10-17 12:00:48

【问题描述】：

我使用universal-cookie 存储在本地存储中，然后通过管道传输到存储中。

class App extends Component 

  componentDidMount() 
    // if a cookie is present, save the value in the store for use communication 
    // with the server. If the cookie is undefined, the user is redirected to the login page.
    // Redirection is handled by router.
    const userNameInCookie = cookies.get('userName');
    if (userNameInCookie) 
        this.props.dispatch(actions.setUserNameFromCookie(userNameInCookie));
    
  

  render() 
    return (
        <div>
            <div className="header">
                <h2 className="header-title">Traveler</h2>
            </div>
            this.props.children
        </div>
    );
  

当我运行 Jest 测试套件时，每个测试都失败并出现此错误

FAIL  src/test/UserCreateForm.test.js
● Test suite failed to run

Missing the cookie header or object

  at new Cookies (node_modules/universal-cookie/lib/Cookies.js:35:15)
  at Object.<anonymous> (src/actions/index.js:4:17)
  at Object.<anonymous> (src/reducers/index.js:1:258)
  at Object.<anonymous> (src/store.js:4:40)
  at Object.<anonymous> (src/test/UserCreateForm.test.js:7:40)
  at handle (node_modules/worker-farm/lib/child/index.js:41:8)
  at process.<anonymous> (node_modules/worker-farm/lib/child/index.js:47:3)
  at emitTwo (events.js:106:13)
  at process.emit (events.js:194:7)
  at process.nextTick (internal/child_process.js:766:12)
  at _combinedTickCallback (internal/process/next_tick.js:73:7)
  at process._tickCallback (internal/process/next_tick.js:104:9)

我也尝试过使用 Enzyme 进行冒烟测试，但我得到了同样的错误。代码的行为完全符合我的要求，所以我相信universal-cookie 根本无法与测试相处。

有什么想法吗？ 谢谢！

【参考方案1】：

您是否导入了universal-cookie，然后定义了类？

import Cookies from 'universal-cookie';
const cookies = new Cookies();

所以你的代码看起来是......

import Cookies from 'universal-cookie';

class App extends Component 
  componentDidMount() 
    const cookies = new Cookies();
    const userNameInCookie = cookies.get('userName');
    if (userNameInCookie) 
      this.props.dispatch(actions.setUserNameFromCookie(userNameInCookie));
    
  

  render() 
    return (
      <div>
        <div className="header">
          <h2 className="header-title">Traveler</h2>
        </div>
        this.props.children
      </div>
    );