Unit testing 单元测试组件参考

现在，一个组件看起来如下所示：

  class Notification extends Component {
      constructor(props, context) {
        super(props,context);
      }


      render() {
        return (<NotificationSystem ref="notificationSystem"/>);
      }
   }

   export default Notification;

我的渲染组件是：

function renderComponent(ComponentClass, props = {}, state = {}) {
    let store = createStore(reducer, state);
    return (
     <Provider store={store}>
        <ComponentClass { ...props } /> 
     </Provider>     
    );
}

---

知道如何正确地测试组件是否可引用吗？

Hi！你找到答案了吗？嗨！你找到答案了吗？

function renderComponent(ComponentClass, props = {}, state = {}) {
    let store = createStore(reducer, state);
    return (
     <Provider store={store}>
        <ComponentClass { ...props } /> 
     </Provider>     
    );
}

Invariant Violation: addComponentAsRefTo(...): Only a ReactOwner can have refs. You might be adding a ref to a component that was not created inside a component's `render` method, or you have multiple copies of React loaded