目前我手動初始化componentDidMount上的Quill編輯器,並且jest測試失敗。看起來像我在jsdom中得到的ref值是null。有和問題在這裏:https://github.com/facebook/react/issues/7371但看起來像裁判應該工作。任何想法我應該檢查?refs在Jest快照測試中爲null-react-test-renderer
組件:
import React, { Component } from 'react';
import logo from './logo.svg';
import './App.css';
class App extends Component {
componentDidMount() {
console.log(this._p)
}
render() {
return (
<div className="App">
<div className="App-header">
<img src={logo} className="App-logo" alt="logo" />
<h2>Welcome to React</h2>
</div>
<p className="App-intro" ref={(c) => { this._p = c }}>
To get started, edit <code>src/App.js</code> and save to reload.
</p>
</div>
);
}
}
測試:
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App';
import renderer from 'react-test-renderer'
it('snapshot testing',() => {
const tree = renderer.create(
<App />
).toJSON()
expect(tree).toMatchSnapshot()
})
其結果是,輸出的console.log空。但我希望P標記
請將相關代碼直接添加到問題中。 – Timo