Jest在Node环境下的测试配置

安装依赖 package.json

  "devDependencies": {
    "@babel/core": "^7.18.2",
    "@babel/preset-env": "^7.18.2",
    "babel-jest": "^28.1.0",
    "jest": "^28.1.0"
  }

配置babel babel.config.js

module.exports = {
    presets: [['@babel/preset-env', { targets: { node: 'current' } }]],
};

测试脚本 os.spec.js

const MACOS_SYstem = 'Darwin'
const isMacOS = () => {
    return require('os').type() === MACOS_SYstem
}

describe('os test', () => {
    test('Is macOS system', () => {
        expect(isMacOS()).toBeTruthy()
    });
});