相关疑难解决方法(0)

我正在使用 Jest 和 Enzyme 来测试 React 功能组件。

我的组件：

export const getGroups = async () => {
    const data = await fetch(groupApiUrl);
    return await data.json()
};

export default function MyWidget({
  groupId,
}) {
  // Store group object in state
  const [group, setGroup] = useState(null);

  // Retrive groups on load
  useEffect(() => {
    if (groupId && group === null) {
      const runEffect = async () => {
        const  { groups  } = await getGroups();
        const groupData = groups.find(
          g => g.name === …

大家.

在发生异步调用后,我遇到了测试状态更新的奇怪问题componentDidMount.

这是我的组件代码:

'use strict';


import React from 'react';
import UserComponent from './userComponent';
const request = require('request');


class UsersListComponent extends React.Component {
  constructor(props) {
    super(props);

    this.state = {
      usersList: []
    };
  }

  componentDidMount() {
    request('https://api.github.com/users', (err, res) => {
      if (!err && res.statusCode === 200) {
        this.setState({
          usersList: res.slice(0)
        });
      }
      else {
        console.log(err);
      }
    });
  }

  render() {
    if (!this.state.usersList.length) {
      return null;
    }

    return (
      <div className="users-list">
        { this._constructUsersList() }
      </div>
    );
  }

  _constructUsersList() {
    return …