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Testing Vue.js Components with Jest

Complete Project

Explore how to execute and manage Vue.js component tests using Jest and npm commands. This lesson guides you through running your test cases effectively to validate component functionality and solidify your understanding of front-end testing practices.

We'll cover the following...
  • You can run the test cases with the command npm test or npm t.
  • You can execute them with the command npm start.

Note: Clicking the RUN button will run the testing script by default. You might face some warnings due to package dependencies.

'use strict'
require('./check-versions')()

process.env.NODE_ENV = 'production'

const ora = require('ora')
const rm = require('rimraf')
const path = require('path')
const chalk = require('chalk')
const webpack = require('webpack')
const config = require('../config')
const webpackConfig = require('./webpack.prod.conf')

const spinner = ora('building for production...')
spinner.start()

rm(path.join(config.build.assetsRoot, config.build.assetsSubDirectory), err => {
  if (err) throw err
  webpack(webpackConfig, (err, stats) => {
    spinner.stop()
    if (err) throw err
    process.stdout.write(stats.toString({
      colors: true,
      modules: false,
      children: false, // If you are using ts-loader, setting this to true will make TypeScript errors show up during build.
      chunks: false,
      chunkModules: false
    }) + '\n\n')

    if (stats.hasErrors()) {
      console.log(chalk.red('  Build failed with errors.\n'))
      process.exit(1)
    }

    console.log(chalk.cyan('  Build complete.\n'))
    console.log(chalk.yellow(
      '  Tip: built files are meant to be served over an HTTP server.\n' +
      '  Opening index.html over file:// won\'t work.\n'
    ))
  })
})

Let’s test your understanding of this chapter with a quick quiz in the next lesson.