如何使用Jest测试异步组件？

Jest有模拟假冒时间旅行的方法，要在您的情况下使用它，我想您可以按照以下样式更改代码：

import { API } from 'api';import { API as mockAPI } from '__mocks/api';API.get = jest.fn().mockImplementation(mockAPI.get);jest.useFakeTimers(); // this statement makes sure you use fake timersdescribe('Something Component', () => {  it('renders after data loads', () => {    const wrapper = mount(<Something />);    // skip forward to a certain time    jest.runTimersToTime(1);    expect(mountToJson(wrapper)).toMatchSnapshot();  });});

另外，

jest.runTimersToTime()

jest.runAllTimers()