我想在我的反应应用程序上使用mocha chai创建一些单元测试 . 我已阅读教程并看过视频，我已完成以下步骤 .
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安装摩卡柴--save-dev
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npm install --save-dev babel-register
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npm install --save babel-core babel-preset-latest babel-preset-stage-3
我的package.json脚本：
"scripts": {
"start": "node scripts/start.js",
"build": "node scripts/build.js",
"test": "mocha --compilers js:babel-core/register src/**/*.spec.js"
},
我的package.json babel：
"babel": {
"presets": [
"react-app",
"es2015",
"stage-3",
"latest",
"env"
]
},
没有.babelrc文件
当我执行 $ npm run test 时，我收到错误
Error: Using `babel-preset-react-app` requires that you specify `NODE_ENV` or `BABEL_ENV` environment variables. Valid values are "development", "test", and "production". Instead, received: undefined. (While processing preset: "E:\\react\\games\\node_modules\\babel-preset-react-app\\index.js")
at Object.<anonymous> (E:\react\games\node_modules\babel-preset-react-app\index.js:51:9)
at Module._compile (module.js:570:32)
at Module._extensions..js (module.js:579:10)
at Object.require.extensions.(anonymous function) [as .js] (E:\react\games\node_modules\babel-register\lib\node.js:152:7)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
at Module.require (module.js:497:17)
我的单元测试test.spec.js
import {expect } from 'chai';
import { getGames } from './index'
describe('games', function(){
it('gets games list from state', () => {
const state =
{games:{
mygames: [
{
gameId:1,
gameName: 'name',
gameUrl: 'someurl',
gameDscription: 'lorem ipsum',
},
{
gameId:2,
gameName: 'name',
gameUrl: 'someurl',
gameDscription: 'lorem ipsum',
}
]}
}
const result = getGames(state)
expect(result).to.eql(state.games.mygames)
})
})