Join the 1-day Testing & QA Summit featuring 15+ Expert Speakers.Register for FREE! Join TestMu Conference

How to use _createDetachedInstance method in Cypress

Best JavaScript code snippet using cypress

firefox.js

Source:firefox.js

...286  overflow: hidden !important;287  display: none;288}289`;290function _createDetachedInstance(browserInstance) {291    const detachedInstance = new events_1.EventEmitter();292    detachedInstance.pid = browserInstance.pid;293    // kill the entire process tree, from the spawned instance up294    detachedInstance.kill = () => {295        (0, tree_kill_1.default)(browserInstance.pid, (err, result) => {296            debug('force-exit of process tree complete %o', { err, result });297            detachedInstance.emit('exit');298        });299    };300    return detachedInstance;301}302exports._createDetachedInstance = _createDetachedInstance;303function open(browser, url, options = {}, automation) {304    return (0, tslib_1.__awaiter)(this, void 0, void 0, function* () {305        // see revision comment here https://wiki.mozilla.org/index.php?title=WebDriver/RemoteProtocol&oldid=1234946306        const hasCdp = browser.majorVersion >= 86;307        const defaultLaunchOptions = utils_1.default.getDefaultLaunchOptions({308            extensions: [],309            preferences: lodash_1.default.extend({}, defaultPreferences),310            args: [311                '-marionette',312                '-new-instance',313                '-foreground',314                '-start-debugger-server',315                '-no-remote', // @see https://github.com/cypress-io/cypress/issues/6380316            ],317        });318        let remotePort;319        if (hasCdp) {320            remotePort = yield (0, protocol_1.getRemoteDebuggingPort)();321            defaultLaunchOptions.args.push(`--remote-debugging-port=${remotePort}`);322        }323        if (browser.isHeadless) {324            defaultLaunchOptions.args.push('-headless');325            // we don't need to specify width/height since MOZ_HEADLESS_ env vars will be set326            // and the browser will spawn maximized. The user may still supply these args to override327            // defaultLaunchOptions.args.push('--width=1920')328            // defaultLaunchOptions.args.push('--height=1081')329        }330        debug('firefox open %o', options);331        const ps = options.proxyServer;332        if (ps) {333            let { hostname, port, protocol } = url_1.default.parse(ps);334            if (port == null) {335                port = protocol === 'https:' ? '443' : '80';336            }337            lodash_1.default.extend(defaultLaunchOptions.preferences, {338                'network.proxy.allow_hijacking_localhost': true,339                'network.proxy.http': hostname,340                'network.proxy.ssl': hostname,341                'network.proxy.http_port': +port,342                'network.proxy.ssl_port': +port,343                'network.proxy.no_proxies_on': '',344                'browser.download.dir': options.downloadsFolder,345            });346        }347        const ua = options.userAgent;348        if (ua) {349            defaultLaunchOptions.preferences['general.useragent.override'] = ua;350        }351        const [foxdriverPort, marionettePort,] = yield bluebird_1.default.all([(0, get_port_1.default)(), (0, get_port_1.default)()]);352        defaultLaunchOptions.preferences['devtools.debugger.remote-port'] = foxdriverPort;353        defaultLaunchOptions.preferences['marionette.port'] = marionettePort;354        debug('available ports: %o', { foxdriverPort, marionettePort });355        const [cacheDir, extensionDest, launchOptions,] = yield bluebird_1.default.all([356            utils_1.default.ensureCleanCache(browser, options.isTextTerminal),357            utils_1.default.writeExtension(browser, options.isTextTerminal, options.proxyUrl, options.socketIoRoute),358            utils_1.default.executeBeforeBrowserLaunch(browser, defaultLaunchOptions, options),359        ]);360        if (Array.isArray(launchOptions.extensions)) {361            launchOptions.extensions.push(extensionDest);362        }363        else {364            launchOptions.extensions = [extensionDest];365        }366        const profileDir = utils_1.default.getProfileDir(browser, options.isTextTerminal);367        const profile = new firefox_profile_1.default({368            destinationDirectory: profileDir,369        });370        debug('firefox directories %o', { path: profile.path(), cacheDir, extensionDest });371        const xulStorePath = path_1.default.join(profile.path(), 'xulstore.json');372        // if user has set custom window.sizemode pref or it's the first time launching on this profile, write to xulStore.373        if (!(yield fs_extra_1.default.pathExists(xulStorePath))) {374            // this causes the browser to launch maximized, which chrome does by default375            // otherwise an arbitrary size will be picked for the window size376            // this will not have an effect after first launch in 'interactive' mode377            const sizemode = 'maximized';378            yield fs_extra_1.default.writeJSON(xulStorePath, { 'chrome://browser/content/browser.xhtml': { 'main-window': { 'width': 1280, 'height': 1024, sizemode } } });379        }380        launchOptions.preferences['browser.cache.disk.parent_directory'] = cacheDir;381        for (const pref in launchOptions.preferences) {382            const value = launchOptions.preferences[pref];383            profile.setPreference(pref, value);384        }385        // TODO: fix this - synchronous FS operation386        profile.updatePreferences();387        const userCSSPath = path_1.default.join(profileDir, 'chrome');388        if (!(yield fs_extra_1.default.pathExists(path_1.default.join(userCSSPath, 'userChrome.css')))) {389            try {390                yield fs_extra_1.default.mkdir(userCSSPath);391            }392            catch (_a) {393                // probably the folder already exists, this is fine394            }395            // if we're headed we change the yellow automation mode url bar back to a normal color396            //397            // if we're headless we use userCss to 'trick' the browser398            //  into having a consistent browser window size that's near-fullscreen399            //  however it unfortunately still leaves 1px of padding at the top)400            //  without this trick there would be ~74px of padding at the top instead of 1px.401            //402            // TODO: allow configuring userCss through launchOptions403            const userCss = options.browser.isHeadless ? FIREFOX_HEADLESS_USERCSS : FIREFOX_HEADED_USERCSS;404            yield fs_extra_1.default.writeFile(path_1.default.join(profileDir, 'chrome', 'userChrome.css'), userCss);405        }406        launchOptions.args = launchOptions.args.concat([407            '-profile',408            profile.path(),409        ]);410        debug('launch in firefox', { url, args: launchOptions.args });411        const browserInstance = yield (0, browsers_1.launch)(browser, 'about:blank', launchOptions.args, {412            // sets headless resolution to 1280x720 by default413            // user can overwrite this default with these env vars or --height, --width arguments414            MOZ_HEADLESS_WIDTH: '1280',415            MOZ_HEADLESS_HEIGHT: '721',416        });417        try {418            yield firefox_util_1.default.setup({ automation, extensions: launchOptions.extensions, url, foxdriverPort, marionettePort, remotePort, onError: options.onError });419        }420        catch (err) {421            errors.throw('FIREFOX_COULD_NOT_CONNECT', err);422        }423        if (os_1.default.platform() === 'win32') {424            // override the .kill method for Windows so that the detached Firefox process closes between specs425            // @see https://github.com/cypress-io/cypress/issues/6392426            return _createDetachedInstance(browserInstance);427        }428        return browserInstance;429    });430}...

Using AI Code Generation

1Cypress._.prototype._createDetachedInstance = function() {2    return this.cloneDeep(this);3}4Cypress._.prototype._createDetachedInstance = function() {5    return this.cloneDeep(this);6}7Cypress._.prototype._createDetachedInstance = function() {8    return this.cloneDeep(this);9}10Cypress._.prototype._createDetachedInstance = function() {11    return this.cloneDeep(this);12}13Cypress._.prototype._createDetachedInstance = function() {14    return this.cloneDeep(this);15}16Cypress._.prototype._createDetachedInstance = function() {17    return this.cloneDeep(this);18}19Cypress._.prototype._createDetachedInstance = function() {20    return this.cloneDeep(this);21}22Cypress._.prototype._createDetachedInstance = function() {23    return this.cloneDeep(this);24}25Cypress._.prototype._createDetachedInstance = function() {26    return this.cloneDeep(this);27}28Cypress._.prototype._createDetachedInstance = function() {29    return this.cloneDeep(this);30}31Cypress._.prototype._createDetachedInstance = function() {32    return this.cloneDeep(this);33}34Cypress._.prototype._createDetachedInstance = function() {35    return this.cloneDeep(this);36}37Cypress._.prototype._createDetachedInstance = function() {38    return this.cloneDeep(this);39}

Using AI Code Generation

1cy.on('window:before:load', win => {2  win._createDetachedInstance = function() {3    return win;4  };5});6before(() => {7  cy.on('window:before:load', win => {8    win._createDetachedInstance = function() {9      return win;10    };11  });12});13before(() => {14  cy.on('window:before:load', win => {15    win._createDetachedInstance = function() {16      return win;17    };18  });19});20before(() => {21  cy.on('window:before:load', win => {22    win._createDetachedInstance = function() {23      return win;24    };25  });26});27before(() => {28  cy.on('window:before:load', win => {29    win._createDetachedInstance = function() {30      return win;31    };32  });33});34before(() => {35  cy.on('window:before:load', win => {36    win._createDetachedInstance = function() {37      return win;38    };39  });40});41before(() => {42  cy.on('window:before:load', win => {43    win._createDetachedInstance = function() {44      return win;45    };46  });47});48before(() => {49  cy.on('window:before:load', win => {50    win._createDetachedInstance = function() {51      return win;52    };53  });54});55before(() => {56  cy.on('window:before:load', win => {57    win._createDetachedInstance = function() {58      return win;59    };60  });61});62before(() => {63  cy.on('window:before:load', win => {

Using AI Code Generation

1import React from "react";2import { mount } from "cypress-react-unit-test";3import MyComponent from "./MyComponent";4describe("MyComponent", () => {5  it("works", () => {6    const _createDetachedInstance = ReactTestUtils._createDetachedInstance;7    const detachedInstance = _createDetachedInstance(MyComponent, {8    });9    mount(detachedInstance);10  });11});

Using AI Code Generation

1import React from 'react';2import { mount } from 'cypress-react-unit-test';3import { _createDetachedInstance } from 'react-dom/test-utils';4import { Component } from './component';5describe('Component', () => {6  it('should do something', () => {7    const component = _createDetachedInstance(Component);8  });9});10import React from 'react';11export const Component = () => {12};13describe('Component', () => {14  it('should do something', () => {15    const component = _createDetachedInstance(Component);16  });17});18import React from 'react';19import { mount } from 'cypress-react-unit-test';20import { Component } from './component';21describe('Component', () =>

Using AI Code Generation

1const createDetachedInstance = require('cypress/lib/server/agent')._createDetachedInstance2const agent = createDetachedInstance()3agent.start()4agent.close()5const createDetachedInstance = require('cypress/lib/server/agent')._createDetachedInstance6const agent = createDetachedInstance()7agent.start()8agent.close()9const createDetachedInstance = require('cypress/lib/server/agent')._createDetachedInstance10const agent = createDetachedInstance()11agent.start()12agent.close()13const createDetachedInstance = require('cypress/lib/server/agent')._createDetachedInstance14const agent = createDetachedInstance()15agent.start()16agent.close()17const createDetachedInstance = require('cypress/lib/server/agent')._createDetachedInstance18const agent = createDetachedInstance()19agent.start()20agent.close()21const createDetachedInstance = require('cypress/lib/server/agent')._createDetachedInstance22const agent = createDetachedInstance()23agent.start()24agent.close()25const createDetachedInstance = require('cypress/lib/server/agent')._createDetachedInstance26const agent = createDetachedInstance()27agent.start()28agent.close()29const createDetachedInstance = require('c

Using AI Code Generation

1const createDetachedInstance = Cypress._.bind(2);3const detachedInstance = createDetachedInstance(Cypress, 'foo', 'bar');4cy.wrap(detachedInstance).its('foo').should('eq', 'bar');5const detachedInstance = Cypress._.createDetachedInstance(Cypress, 'foo', 'bar');6cy.wrap(detachedInstance).its('foo').should('eq', 'bar');7const detachedInstance = Cypress._.createDetachedInstance(Cypress, 'foo', 'bar');8cy.wrap(detachedInstance).its('foo').should('eq', 'bar');9const detachedInstance = Cypress._.createDetachedInstance(Cypress, 'foo', 'bar');10cy.wrap(detachedInstance).its('foo').should('eq', 'bar');11const detachedInstance = Cypress._.createDetachedInstance(Cypress, 'foo', 'bar');12cy.wrap(detachedInstance).its('foo').should('eq', 'bar');13const detachedInstance = Cypress._.createDetachedInstance(Cypress, 'foo', 'bar');14cy.wrap(detachedInstance).its('foo').should('eq', 'bar');

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.