KaneAI - World’s First E2E Software Testing Agent.Book a Demo 
How to use createDevServer method in Cypress
Best JavaScript code snippet using cypress
background.js
Source:background.js 
...49})50// This method will be called when Electron has finished51// initialization and is ready to create browser windows.52// Some APIs can only be used after this event occurs.53async function createDevServer() {54 const route = __dirname + '/../backend/corpora/manage.py'55 console.log(route)56 const backendServer = await spawn('python3', [route, 'runserver'])57 return backendServer58}59async function createProductionServer() {60 // first attempt below.. to be continued..61 // const route = __dirname + '/manage/manage'62 // const backendServer = await execFile(route)63 // return backendServer64}65app.on('ready', async () => {66 if (isDevelopment && !process.env.IS_TEST) {67 // Install Vue Devtools68 try {69 await installVueDevtools()70 } catch (e) {71 console.error('Vue Devtools failed to install:', e.toString())72 }73 }74 process.env.NODE_ENV === 'production'75 ? createProductionServer()76 .then(res => {77 console.log('success prod')78 createWindow()79 })80 .catch(res => {81 console.log('failure prod')82 createProductionServer()83 })84 : createDevServer()85 .then(res => {86 console.log('success dev')87 createWindow()88 })89 .catch(res => {90 console.log('failure dev')91 createDevServer()92 })93})94// Exit cleanly on request from parent process in development mode.95if (isDevelopment) {96 if (process.platform === 'win32') {97 process.on('message', data => {98 if (data === 'graceful-exit') {99 app.quit()100 }101 })102 } else {103 process.on('SIGTERM', () => {104 app.quit()105 })...
gulpfile.babel.js
Source:gulpfile.babel.js
...8gulp.task('build', shell.task(`9 webpack ${FLAGS}10`));11gulp.task('serve', done => {12 createDevServer().listen('3030', '0.0.0.0', () => {13 open('http://0.0.0.0:3030/bindings/angular2/examples/button.html');14 done();15 });16});17 18gulp.task('test', ['e2e-test']);19gulp.task('e2e-test', done => {20 const server = createDevServer({quiet: true});21 server.listen(9090, '0.0.0.0', () => {22 runProtractor().then(code => {23 server.close();24 server.listeningApp.close();25 if (code !== 0) {26 process.exit(code);27 }28 done();29 });30 });31});32function createDevServer(options = {}) {33 const config = require('./webpack.config.js');34 const serverConfig = Object.assign(options, {35 publicPath: config.output.publicPath,36 stats: {colors: true}37 }, config.devServer);38 const server = new WebpackDevServer(require('webpack')(config), serverConfig);39 return server;40}41function runProtractor() {42 const args = ['protractor-conf.js'];43 if (yargs.argv.specs) {44 args.push('--specs');45 args.push(yargs.argv.specs);46 }...
generate.js
Source:generate.js
...10const createRedirects = require("./seo/createRedirects");11const createPwaFiles = require("./pwa/createPwaFiles");12const serveApp = paths => {13 const app$ = createApp(paths)().share();14 const devServer$ = createDevServer(paths)(app$);15 return devServer$;16};17const generate = paths => {18 const app$ = createApp(paths)().share();19 const stats$ = createBundles(paths)(app$);20 return stats$21 .withLatestFrom(app$, (stats, app) => ({ stats, app }))22 .flatMap(({ stats, app }) => {23 return reduceObservable(24 (acc, result) => {},25 null,26 Observable.merge(27 createStaticHtml(paths)(Observable.of(app), Observable.of(stats)),28 createPublic(paths)(),...
webpack.server.js
Source:webpack.server.js
2var webpack = require('webpack');3var config = require("./webpack.config.docs.js");4var WebpackDevServer = require('webpack-dev-server');5var OpenBrowserPlugin = require('open-browser-webpack-plugin');6(function createDevServer() {7 var port = parseInt(Math.random() * 10000 + 8000)8 var server = net.createServer();9 server.listen({10 port: port11 }, function () {12 server.close()13 const host = "localhost"14 config.entry.index.unshift("webpack-dev-server/client?http://"+host+':'+port);15 config.plugins.push(new OpenBrowserPlugin({url: 'http://'+host+':'+port}));16 var webpackDevServer = new WebpackDevServer(webpack(config), {17 contentBase: 'build/docs',18 });19 webpackDevServer.listen(port, host);20 console.log('opening webpack-dev-server(http://'+host+':'+port+')...')21 })22 server.on('error', function(err){23 if(err.code=='EADDRINUSE'){24 createDevServer()25 }else{26 console.log(err)27 }28 })...
dev.js
Source:dev.js
...5module.exports = async function dev() {6 process.chdir(srcDir);7 global.LAYER0_NEXT_APP = next({ dev: true });8 process.chdir(cwd);9 return createDevServer({10 label: 'Next',11 command: (port) => `npm start -- --port=${port}`,12 ready: [/on http:\/\/localhost:3001/i],13 });...
config-overrides.js
Source:config-overrides.js
...3 //do stuff with the webpack config...4 devServer: function (configFunction, env) {5 return function (proxy, allowedHost) {6 const webserverConfig = configFunction(proxy, allowedHost);7 webserverConfig.setup = createDevServer({});8 return webserverConfig;9 };10 },...
watch.js
Source:watch.js
1/* ------------------------------------------2 Watch3--------------------------------------------- */4const createDevServer = require('../build/createDevServer');5createDevServer()6 .catch(() => {7 process.exit(1);...
index.ts
Source:index.ts
1#! /usr/bin/env node2import createDevServer from '@start-dev/core';3createDevServer({4 appDirectory: process.cwd(),5 portNumber: 3001,...
Using AI Code Generation
1const { createDevServer } = require('@cypress/vite-dev-server')2module.exports = (on, config) => {3 on('dev-server:start', async (options) => {4 return createDevServer({ options, viteConfig: require('./vite.config.js') })5 })6}7{8 "devServer": {9 "env": {10 }11 }12}13describe('My First Test', () => {14 it('Visits the app root url', () => {15 cy.visit('/')16 cy.contains('h1', 'Hello world!')17 })18})19import { defineConfig } from 'vite'20import vue from '@vitejs/plugin-vue'21export default defineConfig({22 plugins: [vue()]23})24{25 "scripts": {26 },27 "devDependencies": {28 }29}
Using AI Code Generation
1const { createDevServer } = require('@cypress/vite-dev-server')2module.exports = (on, config) => {3 on('dev-server:start', (options) => {4 return createDevServer({ options })5 })6}7const { createDevServer } = require('@cypress/vite-dev-server')8module.exports = (on, config) => {9 on('dev-server:start', (options) => {10 return createDevServer({ options })11 })12}13{14 "component": {15 "testFiles": "**/*.spec.{js,jsx,ts,tsx}"16 },17 "devServer": {18 "env": {19 }20 }21}22describe('My First Test', () => {23 it('Visits the app root url', () => {24 cy.visit('/')25 cy.contains('h1', 'Welcome to Your Vue.js + TypeScript App')26 })27})28describe('My Second Test', () => {29 it('Visits the app root url', () => {30 cy.visit('/')31 cy.contains('h1', 'Welcome to Your Vue.js + TypeScript App')32 })33})
Using AI Code Generation
1const { createDevServer } = require('@cypress/webpack-dev-server')2const webpackConfig = require('@vue/cli-service/webpack.config.js')3const options = {4}5module.exports = (on, config) => {6 on('dev-server:start', (options) => {7 return createDevServer({ options })8 })9}10const { startDevServer } = require('@cypress/webpack-dev-server')11const webpackConfig = require('@vue/cli-service/webpack.config.js')12const options = {13}14module.exports = (on, config) => {15 on('dev-server:start', (options) => {16 return startDevServer({ options })17 })18}19Cypress.Commands.add('visitWithWebPack', (url, options) => {20 cy.server()21 cy.route('GET', '/api/v1/health', 'fixture:health.json')22 cy.visit(url, options)23})24describe('Health', () => {25 it('Visits the app root url', () => {26 cy.visitWithWebPack('/')27 cy.contains('h1', 'Hello World')28 })29})30{31}32{33}34{35 "scripts": {36 },37 "dependencies": {
Using AI Code Generation
1const { createDevServer } = require('@cypress/webpack-dev-server')2const webpackConfig = require('../webpack.config')3module.exports = (on, config) => {4 on('dev-server:start', async (options) => {5 return createDevServer({ options, webpackConfig })6 })7}8const path = require('path')9const HtmlWebpackPlugin = require('html-webpack-plugin')10module.exports = {11 output: {12 path: path.resolve(__dirname, 'dist'),13 },14 devServer: {15 },16 new HtmlWebpackPlugin({17 }),18}19{20}21"scripts": {22 },23describe('My First Test', () => {24 it('Visits the Kitchen Sink', () => {25 cy.visit('/')26 cy.contains('h1', 'Hello World')27 })28})29import './index.html'30describe('My First Test', () => {31 it('Visits
Using AI Code Generation
1const cypress = require('cypress');2const { createDevServer } = require('@cypress/webpack-dev-server');3const webpackConfig = require('../webpack.config');4module.exports = (on, config) => {5 on('dev-server:start', (options) => {6 return createDevServer({7 });8 });9};10const wp = require('../test');11module.exports = (on, config) => {12 wp(on, config);13};14{15 "testFiles": "**/*.{spec,features}",16 "env": {17 }18}19const path = require('path');20module.exports = {21 output: {22 path: path.resolve(__dirname, 'dist'),23 },24 devServer: {25 contentBase: path.join(__dirname, 'dist'),26 },27 module: {28 {29 test: /\.(js|jsx)$/,30 },31 },32 resolve: {33 },34};35{36 "scripts": {37 },38 "dependencies": {
Using AI Code Generation
1import { createDevServer } from '@cypress/vite-dev-server'2module.exports = (on, config) => {3 on('dev-server:start', (options) => {4 return createDevServer({ options })5 })6}7{8 "env": {9 }10}11describe('My First Test', () => {12 it('Does not do much!', () => {13 cy.visit('/')14 cy.contains('Hello World')15 })16})17import '@cypress/vite-dev-server/support'18const { startDevServer } = require('@cypress/vite-dev-server')19module.exports = (on, config) => {20 on('dev-server:start', (options) => {21 return startDevServer({ options })22 })23}24import '@cypress/vite-dev-server/support'25const { startDevServer } = require('@cypress/vite-dev-server')26module.exports = (on, config) => {27 on('dev-server:start', (options) => {28 return startDevServer({ options })29 })30}31import '@cypress/vite-dev-server/support'32const { startDevServer } = require('@cypress/vite-dev-server')33module.exports = (on, config) => {34 on('dev-server:start', (options) => {35 return startDevServer({ options })36 })37}38import '@cypress/vite-dev-server/support'39const { startDevServer } = require('@cypress/vite-dev-server')40module.exports = (on, config) => {41 on('dev-server:start', (options) => {42 return startDevServer({ options })43 })44}45import '@cypress/vite-dev-server/support'46const { startDevServer } = require('@cypress/vite
Using AI Code Generation
1const { createDevServer } = require("@cypress/vite-dev-server");2const { startDevServer } = require("@cypress/webpack-dev-server");3module.exports = (on, config) => {4 on("dev-server:start", async (options) => {5 return startDevServer({6 viteConfig: {7 },8 });9 });10};11{12 "testFiles": "**/*.{spec,features}",13 "env": {14 },15 "devServer": {16 "env": {17 }18 }19}20import vue from "@vitejs/plugin-vue";21import { defineConfig } from "vite";22import { resolve } from "path";23export default defineConfig({24 plugins: [vue()],25 resolve: {26 alias: {27 "@": resolve(__dirname, "src"),28 },29 },30});31{32 "scripts": {33 },34 "dependencies": {
Using AI Code Generation
1const { createDevServer } = require('@cypress/vite-dev-server')2module.exports = (on, config) => {3 on('dev-server:start', (options) => {4 return createDevServer({5 viteConfig: {6 }7 })8 })9}10{11}12const { startDevServer } = require('@cypress/vite-dev-server')13module.exports = (on, config) => {14 on('dev-server:start', (options) => {15 return startDevServer({ options })16 })17}18import '@testing-library/cypress/add-commands'19import 'cypress-axe'20import '@testing-library/cypress/add-commands'21import 'cypress-axe'22describe('Hello World', () => {23 it('works', () => {24 cy.visit('/')25 cy.contains('h1', 'Hello World')26 })27})28{
Using AI Code Generation
1const { createDevServer } = require('@cypress/vite-dev-server')2const { viteConfig } = require('./vite.config')3module.exports = async (on, config) => {4 const devServer = await createDevServer({ options: viteConfig })5 on('dev-server:start', (options) => devServer.listen(options.port, options.host))6}7{8}9{10 "scripts": {11 },12 "devDependencies": {13 }14}15{16 "env": {17 }18}19describe('My First Test', () => {20 it('Does not do much!', () => {21 cy.visit('/')22 cy.contains('Hello World
Cypress Tutorial
Cypress is a renowned Javascript-based open-source, easy-to-use end-to-end testing framework primarily used for testing web applications. Cypress is a relatively new player in the automation testing space and has been gaining much traction lately, as evidenced by the number of Forks (2.7K) and Stars (42.1K) for the project. LambdaTest’s Cypress Tutorial covers step-by-step guides that will help you learn from the basics till you run automation tests on LambdaTest.
Chapters:
- What is Cypress? -
- Why Cypress? - Learn why Cypress might be a good choice for testing your web applications.
- Features of Cypress Testing - Learn about features that make Cypress a powerful and flexible tool for testing web applications.
- Cypress Drawbacks - Although Cypress has many strengths, it has a few limitations that you should be aware of.
- Cypress Architecture - Learn more about Cypress architecture and how it is designed to be run directly in the browser, i.e., it does not have any additional servers.
- Browsers Supported by Cypress - Cypress is built on top of the Electron browser, supporting all modern web browsers. Learn browsers that support Cypress.
- Selenium vs Cypress: A Detailed Comparison - Compare and explore some key differences in terms of their design and features.
- Cypress Learning: Best Practices - Take a deep dive into some of the best practices you should use to avoid anti-patterns in your automation tests.
- How To Run Cypress Tests on LambdaTest? - Set up a LambdaTest account, and now you are all set to learn how to run Cypress tests.
Certification
You can elevate your expertise with end-to-end testing using the Cypress automation framework and stay one step ahead in your career by earning a Cypress certification. Check out our Cypress 101 Certification.
YouTube
Watch this 3 hours of complete tutorial to learn the basics of Cypress and various Cypress commands with the Cypress testing at LambdaTest.
Run Cypress automation tests on LambdaTest cloud grid
Perform automation testing on 3000+ real desktop and mobile devices online.
Try LambdaTest Now !!
Get 100 minutes of automation test minutes FREE!!
Was this article helpful?
