reactjs – 在测试包含react-slick的create-react-app组件时,mat

发布时间：2020-12-15 20:41:29 所属栏目：百科来源：网络整理

导读：我试图为我现有的项目创建测试文件 https://github.com/facebookincubator/create-react-app 但是当我运行npm测试时我得到了这个错误 FAIL src/__tests__/movie_single/MovieSingle-test.js ● Test suite failed to run matchMedia not present,legacy brow

我试图为我现有的项目创建测试文件

https://github.com/facebookincubator/create-react-app

但是当我运行npm测试时我得到了这个错误

FAIL  src/__tests__/movie_single/MovieSingle-test.js
  ● Test suite failed to run

    matchMedia not present,legacy browsers require a polyfill

      at Object.MediaQueryDispatch (node_modules/enquire.js/dist/enquire.js:226:19)
      at node_modules/enquire.js/dist/enquire.js:291:9
      at Object.<anonymous>.i (node_modules/enquire.js/dist/enquire.js:11:20)
      at Object.<anonymous> (node_modules/enquire.js/dist/enquire.js:21:2)
      at Object.<anonymous> (node_modules/react-responsive-mixin/index.js:2:28)
      at Object.<anonymous> (node_modules/react-slick/lib/slider.js:19:29)
      at Object.<anonymous> (node_modules/react-slick/lib/index.js:3:18)
      at Object.<anonymous> (src/components/movie_single/MovieDetailsBox.js:4:45)
      at Object.<anonymous> (src/components/movie_single/MovieSingle.js:3:50)
      at Object.<anonymous> (src/__tests__/movie_single/MovieSingle-test.js:3:46)
      at process._tickCallback (internal/process/next_tick.js:103:7)

Test Suites: 1 failed,1 total
Tests:       0 total
Snapshots:   0 total
Time:        2.642s
Ran all test suites matching "a".

所以这是我的package.json

{
  "name": "xxx","version": "0.1.0","private": true,"devDependencies": {
    "autoprefixer-stylus": "0.10.0","concurrently": "3.0.0","react-scripts": "0.6.1","stylus": "0.54.5"
  },"scripts": {
    "start": "react-scripts start","watch": "concurrently --names 'webpack,stylus' --prefix name 'npm run start' 'npm run styles:watch'","build": "react-scripts build","test": "react-scripts test --env=jsdom","eject": "react-scripts eject",}
}

这是我的MovieSingle-test.js

import React from 'react';
import ReactDOM from 'react-dom';
import MoviesSingle from '../../components/movie_single/MovieSingle';

it('renders without crashing',() => {
    const div = document.createElement('div');
    ReactDOM.render(<MoviesSingle />,div);
});

那么我该如何解决这个问题并至少让常见的反应组件测试通过？

谢谢！

将src / setupTests.js添加到项目中(将在运行测试之前执行)：

/**
 * fix: `matchMedia` not present,legacy browsers require a polyfill
 */
global.matchMedia = global.matchMedia || function() {
  return {
      matches : false,addListener : function() {},removeListener: function() {}
  }
}

（编辑：李大同）

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