How to use createDevServer method in Cypress

Best JavaScript code snippet using cypress

background.js

Source: background.js Github

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...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 })...

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gulpfile.babel.js

Source: gulpfile.babel.js Github

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...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 }...

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generate.js

Source: generate.js Github

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...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)(),...

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webpack.server.js

Source: webpack.server.js Github

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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 })...

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dev.js

Source: dev.js Github

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...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 });...

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config-overrides.js

Source: config-overrides.js Github

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...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 },...

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watch.js

Source: watch.js Github

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1/​* ------------------------------------------2 Watch3--------------------------------------------- */​4const createDevServer = require('../​build/​createDevServer');5createDevServer()6 .catch(() => {7 process.exit(1);...

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index.ts

Source: index.ts Github

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1#! /​usr/​bin/​env node2import createDevServer from '@start-dev/​core';3createDevServer({4 appDirectory: process.cwd(),5 portNumber: 3001,...

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Using AI Code Generation

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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}

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Using AI Code Generation

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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})

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Using AI Code Generation

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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": {

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Using AI Code Generation

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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

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Using AI Code Generation

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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": {

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Using AI Code Generation

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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

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Using AI Code Generation

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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": {

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Using AI Code Generation

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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{

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Using AI Code Generation

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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

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2022 here and tested with cypress version: "6.x.x" until "10.x.x"

You could use { force: true } like:

cy.get("YOUR_SELECTOR").click({ force: true });

but this might not solve it ! The problem might be more complex, that's why check below

My solution:

cy.get("YOUR_SELECTOR").trigger("click");

Explanation:

In my case, I needed to watch a bit deeper what's going on. I started by pin the click action like this:

enter image description here

Then watch the console, and you should see something like: enter image description here

Now click on line Mouse Events, it should display a table: enter image description here

So basically, when Cypress executes the click function, it triggers all those events but somehow my component behave the way that it is detached the moment where click event is triggered.

So I just simplified the click by doing:

cy.get("YOUR_SELECTOR").trigger("click");

And it worked ????

Hope this will fix your issue or at least help you debug and understand what's wrong.

https://stackoverflow.com/questions/51254946/cypress-does-not-always-executes-click-on-element

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