Javascript Jest-意外的令牌导入
我试图学习如何使用React和jest进行单元测试。我遇到了以下错误: 意外的令牌导入 以下是我的巴别塔预设:Javascript Jest-意外的令牌导入,javascript,reactjs,jestjs,Javascript,Reactjs,Jestjs,我试图学习如何使用React和jest进行单元测试。我遇到了以下错误: 意外的令牌导入 以下是我的巴别塔预设: { "presets": ["es2015", "stage-0", "react"], "env": { "test": { "plugins": ["transform-es2015-modules-commonjs"] } } } 以下是我尝试测试的文件: import jest from 'jest'; import React f
{
"presets": ["es2015", "stage-0", "react"],
"env": {
"test": {
"plugins": ["transform-es2015-modules-commonjs"]
}
}
}
以下是我尝试测试的文件:
import jest from 'jest';
import React from 'react';
import { shallow } from 'enzyme';
import Step from '../src/components/step.js';
const wrapper = shallow(<Step />);
wrapper.find('a').simulate('click', { preventDefault() {} });
不知道它为什么会给我这个消息?我很确定您也需要添加babel预设以进行测试,jest将env变量设置为测试 所以
我很确定您也需要添加babel预设来测试,jest将env变量设置为测试 所以 看起来您的依赖项中缺少了。这就是为什么在执行测试之前,
jest
没有在您的ES6+代码上运行babel
。您的依赖项中似乎缺少它。这就是为什么在执行测试之前,jest
没有在ES6+代码上运行babel
{
"name": "react-simple-boilerplate",
"version": "1.0.0",
"description": "Simple and lightweight Boilerplate for ReactJS projects",
"scripts": {
"lint": "eslint src",
"start": "node server.js",
"test": "jest"
},
"devDependencies": {
"babel-core": "^6.24.1",
"babel-loader": "^7.0.0",
"babel-plugin-transform-es2015-modules-commonjs": "^6.26.0",
"babel-preset-es2015": "^6.24.1",
"babel-preset-react": "^6.24.1",
"babel-preset-stage-0": "^6.24.1",
"css-loader": "^0.28.0",
"enzyme": "^3.2.0",
"enzyme-adapter-react-16": "^1.1.0",
"eslint": "^3.19.0",
"eslint-plugin-react": "^6.10.3",
"jest": "^21.2.1",
"node-sass": "^4.5.2",
"react-addons-test-utils": "^15.6.2",
"sass-loader": "^6.0.3",
"style-loader": "^0.16.1",
"webpack": "^2.4.1",
"webpack-dev-server": "^2.4.4"
},
"dependencies": {
"babel-loader": "^7.0.0",
"react": "^15.5.4",
"react-dom": "^15.5.4"
},
"main": "server.js"
}
"test": {
"plugins": ["transform-es2015-modules-commonjs"],
"presets": ["es2015", "react", "stage-0"]
}