vue测试安装和配置

 npm install --save-dev @vue/test-utils mocha mocha-webpack

 npm install --save-dev jsdom jsdom-global webapck-node-externals

 npm install --save-dev expect

 npm install --save-dev nyc babel-plugin-istanbul
8 npm install cross-env --save-dev

配置

webpack.base.conf.js

 if (process.env.NODE_ENV === 'test') {
   module.exports.externals = [require('webpack-node-externals')()]
   module.exports.devtool='inline-cheap-module-source-map'
 }

.babelrc.js

   "plugins": ["transform-vue-jsx", "transform-runtime", "istanbul"]

test/steup.js

 require('jsdom-global')()
 global.expect = require('expect')

package.json

　　

   "nyc": {
     "include": [
       "src/**/*.(js|vue)"
     ],
     "instrument": false,
     "sourceMap":false
   },

package.json

 "script": {
     "test": "cross-env NODE_ENV=test nyc mocha-webpack --webpack-config  build/webpack.base.conf.js --require test/setup.js test/**/*.spec.js"

 }