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How to use xvfb.start method in Cypress

Best JavaScript code snippet using cypress

command.xvfb.test.js

Source:command.xvfb.test.js

1import os from 'os'2import cp from 'child_process'3import kill from 'tree-kill'4jest.mock('tree-kill')5jest.mock('../../src/utils/timers')6describe('xvfb', () => {7  let Xvfb8  beforeEach(async () => {9    Xvfb = await import('../../src/commands/xvfb').then(m => m.default || m)10  })11  afterEach(() => {12    jest.restoreAllMocks()13    jest.resetModules()14  })15  test('should not throw error on unsupported platforms', () => {16    jest.spyOn(os, 'platform').mockReturnValue('not supported')17    expect(() => Xvfb.isSupported()).not.toThrow()18  })19  test('should throw error on unsupported platforms when set', () => {20    jest.spyOn(os, 'platform').mockReturnValue('not supported')21    expect(() => Xvfb.isSupported(true)).toThrow('not supported')22  })23  test('should set browser config when load called', () => {24    jest.spyOn(os, 'platform').mockReturnValue('linux')25    const browser = {26      hook: () => {},27      config: {}28    }29    expect(browser.config.xvfb).toBeUndefined()30    Xvfb.load(browser)31    expect(browser.config.xvfb).toBeUndefined()32    browser.config.xvfb = true33    Xvfb.load(browser)34    expect(browser.config.xvfb).toBe(true)35  })36  test('should add window args from browser config', () => {37    jest.spyOn(os, 'platform').mockReturnValue('linux')38    const width = 11139    const height = 22240    const browser = {41      hook: () => {},42      config: {43        xvfb: true,44        browserConfig: {45          window: { width, height }46        }47      }48    }49    Xvfb.load(browser)50    expect(browser.config.xvfb).toEqual(expect.any(Object))51    expect(browser.config.xvfb.args).toEqual(expect.any(Array))52    expect(browser.config.xvfb.args.length).toBe(1)53    expect(browser.config.xvfb.args[0]).toEqual(`-screen 0 ${width}x${height}x24`)54  })55  test('should not start twice', () => {56    jest.spyOn(os, 'platform').mockReturnValue('linux')57    const spawn = jest.spyOn(cp, 'spawn').mockImplementation(() => {58      return {59        connected: true,60        on() {},61        stderr: {62          on() {}63        }64      }65    })66    expect(Xvfb.isRunning()).toBe(false)67    Xvfb.start()68    expect(spawn).toHaveBeenCalledTimes(1)69    expect(Xvfb.isRunning()).toBe(true)70    Xvfb.start()71    expect(spawn).toHaveBeenCalledTimes(1)72  })73  test('should throw error when Xvfb not found', () => {74    jest.spyOn(os, 'platform').mockReturnValue('linux')75    jest.spyOn(cp, 'spawn').mockImplementation(() => {76      return {77        connected: true,78        on(type, fn) {79          if (type === 'error') {80            fn({ code: 'ENOENT' })81          }82        },83        stderr: {84          on() {}85        }86      }87    })88    expect(() => Xvfb.start()).toThrow('Xvfb not found')89    expect(Xvfb.isRunning()).toBe(false)90  })91  test('should warn when Xvfb already running and quiet false', () => {92    jest.spyOn(os, 'platform').mockReturnValue('linux')93    const spy = jest.spyOn(console, 'warn').mockImplementation(() => {})94    jest.spyOn(cp, 'spawn').mockImplementation(() => {95      return {96        connected: true,97        on(type, fn) {98          if (type === 'close') {99            fn(1, 0)100          }101        },102        stderr: {103          on(type, fn) {104            if (type === 'data') {105              fn(`(EE)106Fatal server error:107(EE) Server is already active for display 99108  If this server is no longer running, remove /tmp/.X99-lock109  and start again.110(EE)`)111            }112          }113        }114      }115    })116    Xvfb.start()117    expect(spy).toHaveBeenCalledTimes(1)118    expect(Xvfb.isRunning()).toBe(false)119  })120  test('should warn when Xvfb already running unless quiet', () => {121    jest.spyOn(os, 'platform').mockReturnValue('linux')122    const spy = jest.spyOn(console, 'warn').mockImplementation(() => {})123    jest.spyOn(cp, 'spawn').mockImplementation(() => {124      return {125        connected: true,126        on(type, fn) {127          if (type === 'close') {128            fn(1, 0)129          }130        },131        stderr: {132          on(type, fn) {133            if (type === 'data') {134              fn(`(EE)135Fatal server error:136(EE) Server is already active for display 99137  If this server is no longer running, remove /tmp/.X99-lock138  and start again.139(EE)`)140            }141          }142        }143      }144    })145    Xvfb.start({ quiet: true })146    expect(spy).not.toHaveBeenCalled()147    expect(Xvfb.isRunning()).toBe(false)148  })149  test('should warn when Xvfb failed to start', () => {150    jest.spyOn(os, 'platform').mockReturnValue('linux')151    jest.spyOn(cp, 'spawn').mockImplementation(() => {152      return {153        connected: true,154        on(type, fn) {155          if (type === 'close') {156            fn(1, 0)157          }158        },159        stderr: {160          on(type, fn) {161            if (type === 'data') {162              fn(`(EE)163Fatal server error:164(EE) Unrecognized option: 0165(EE)166`)167            }168          }169        }170      }171    })172    expect(() => Xvfb.start()).toThrow('BrowserError: Failed to start Xvfb, Unrecognized option: 0')173    expect(Xvfb.isRunning()).toBe(false)174  })175  test('should do nothing on stop when not started', () => {176    Xvfb.stop()177    expect(kill).not.toHaveBeenCalled()178  })179  test('should wait on stop for closed to be true', async () => {180    const spy = jest.spyOn(console, 'warn').mockImplementation(() => {})181    jest.useFakeTimers()182    Xvfb.process = true183    Xvfb.closed = false184    const stopPromise = Xvfb.stop()185    Xvfb.closed = true186    jest.advanceTimersByTime(100)187    await expect(stopPromise).resolves.toBeUndefined()188    jest.advanceTimersByTime(3100)189    expect(spy).not.toHaveBeenCalled()190  })191  test('should timeout on stop', async () => {192    const spy = jest.spyOn(console, 'warn').mockImplementation(() => {})193    jest.useFakeTimers()194    Xvfb.process = true195    Xvfb.closed = false196    const stopPromise = Xvfb.stop()197    jest.advanceTimersByTime(3100)198    await expect(stopPromise).resolves.toBeUndefined()199    expect(spy).toHaveBeenCalledTimes(1)200  })...

index.js

Source:index.js

...145  xvfb.startSync();146  console.error('started sync');147  xvfb.stopSync();148  console.error('stopped sync');149  xvfb.start(function(err) {150    assert.equal(err, null);151    console.error('started async');152    xvfb.stop(function(err) {153      assert.equal(err, null);154      console.error('stopped async');155      xvfb.start(function(err) {156        assert.equal(err, null);157        console.error('started async');158        xvfb.stopSync();159        console.error('stopped sync');160        xvfb.startSync();161        console.error('started sync');162        xvfb.stop(function(err) {163          assert.equal(err, null);164          console.error('stopped async');165        });166      });167    });168  });169}

xvfb_spec.js

Source:xvfb_spec.js

...23  })24  context('#start', function () {25    it('passes', function () {26      sinon.stub(xvfb._xvfb, 'startAsync').resolves()27      return xvfb.start()28    })29    it('fails with error message', function () {30      const message = 'nope'31      sinon.stub(xvfb._xvfb, 'startAsync').rejects(new Error(message))32      return xvfb.start()33      .then(() => {34        throw new Error('Should have thrown an error')35      })36      .catch((err) => {37        expect(err.message).to.include(message)38      })39    })40    it('fails when xvfb exited with non zero exit code', function () {41      const e = new Error('something bad happened')42      e.nonZeroExitCode = true43      sinon.stub(xvfb._xvfb, 'startAsync').rejects(e)44      return xvfb.start()45      .then(() => {46        throw new Error('Should have thrown an error')47      })48      .catch((err) => {49        expect(err.known).to.be.true50        expect(err.message).to.include('something bad happened')51        expect(err.message).to.include('XVFB exited with a non zero exit code.')52      })53    })54  })55  context('#isNeeded', function () {56    it('does not need xvfb on osx', function () {57      os.platform.returns('darwin')58      expect(xvfb.isNeeded()).to.be.false...

xvfb.js

Source:xvfb.js

1// Static functions to configure and start a Xvfb instance.2const child_process = require('child_process');3const process = require('process');4const path = require("path");5const log = require("./log");6const processHelpers = require("./process-helpers");7/**8 * Display number to use.9 */10const DISPLAY = process.env.DISPLAY;11/**12 * Starts the Xvfb instance.13 * @param {string} logDirectory - The directory for logging the Xvfb output to14 * (will be created if it does not exist yet)15 * @param {number} width - The width of the display in pixels16 * @param {number} height - The height of the display in pixels17 * @returns {Promise<object>} - The Xvfb process object18 */19const start = async function(logDirectory, width, height) {20  log.info({21    logDirectory: logDirectory,22    width: width,23    height: height24  }, "xvfb.start");25  const commandLog = await processHelpers.openWriteStream(26    path.join(logDirectory, "xvfb.log"), "a");27  const commandErr = await processHelpers.openWriteStream(28    path.join(logDirectory, "xvfb.err"), "a");29  const command = "Xvfb";30  const args = [31    DISPLAY,32    "-terminate",33    "-screen", "0",34    width + "x" + height + "x16"35  ];36  const env = Object.assign({}, process.env);37  const xvfbOptions = {38    cwd: logDirectory,39    env: env,40    stdio: [ 'pipe', commandLog, commandErr ]41  };42  log.info({ command: command, args: args }, "xvfb.start.spawn");43  const xvfb = child_process.spawn(command, args, xvfbOptions);44  xvfb.on('exit', (code, signal) => {45    if (code !== 0) {46      if (signal === null) {47        log.info({ code: code }, "xvfb.start.error");48        throw new Error("Failed Xvfb");49      } else {50        log.info({ signal: signal }, "xvfb.start.terminated");51      }52    }53  });54  process.on('SIGTERM', (signal) => {55    log.info({ signal: signal }, "xvfb.start.terminate");56    xvfb.kill();57  });58  return xvfb;59}...

Using AI Code Generation

1var Xvfb = require('xvfb');2var xvfb = new Xvfb({3});4xvfb.start(function (err, xvfbProcess) {5    if (err) {6        console.log("error starting xvfb");7    }8    else {9        console.log("xvfb started");10    }11});12var cypress = require('cypress');13cypress.run({14}).then((results) => {15    console.log(results);16    xvfb.stop(function (err) {17        if (err) {18            console.log("error stopping xvfb");19        }20        else {21            console.log("xvfb stopped");22        }23    });24}).catch((err) => {25    console.error(err);26    xvfb.stop(function (err) {27        if (err) {28            console.log("error stopping xvfb");29        }30        else {31            console.log("xvfb stopped");32        }33    });34});35var cypress = require('cypress');36cypress.run({37}).then((results) => {38    console.log(results);39}).catch((err) => {40    console.error(err);41});42var cypress = require('cypress');43cypress.run({44}).then((results) => {45    console.log(results);46}).catch((err) => {47    console.error(err);48});49var cypress = require('cypress');50cypress.run({51}).then((results) => {52    console.log(results);53}).catch((err) => {54    console.error(err);55});56var cypress = require('cypress');57cypress.run({

Using AI Code Generation

1const xvfb = require('cypress-xvfb');2xvfb.startSync();3const cypress = require('cypress');4cypress.run({5});6xvfb.stopSync();7{8  "env": {9  }10}11{12  "scripts": {13  }14}

Using AI Code Generation

1var xvfb = require('xvfb');2var xvfbProcess = new xvfb();3xvfbProcess.startSync();4const cypress = require('cypress')5cypress.run({6}).then((results) => {7  console.log(results)8  xvfbProcess.stopSync();9})10[20:41:49] Platform: linux (Debian - 8.0)11[20:41:49] Browser: Electron 59 (headless)12[20:41:49] Platform: linux (Debian - 8.0)13[20:41:49] Browser: Electron 59 (headless)14[20:41:49] Platform: linux (Debian - 8.0)15[20:41:49] Browser: Electron 59 (headless)

Using AI Code Generation

1var xvfb = require('xvfb');2var xvfbProcess = new xvfb();3xvfbProcess.start(function(err, xvfbProcess) {4  console.log('Xvfb started');5  xvfbProcess.stop(function(err) {6    console.log('Xvfb stopped');7  });8});

Using AI Code Generation

1const xvfb = require('xvfb');2const xvfbProcess = new xvfb({silent: true}).startSync();3const cypress = require('cypress');4cypress.run({5}).then((results) => {6    console.log(results);7    xvfbProcess.stopSync();8});9at Function.Module._resolveFilename (internal/modules/cjs/loader.js:880:15)10at Function.Module._load (internal/modules/cjs/loader.js:725:27)11at Module.require (internal/modules/cjs/loader.js:952:19)12at require (internal/modules/cjs/helpers.js:88:18)13at Object.<anonymous> (/home/ram/Downloads/cypress-test/test.js:1:18)14at Module._compile (internal/modules/cjs/loader.js:1063:30)15at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)16at Module.load (internal/modules/cjs/loader.js:928:32)17at Function.Module._load (internal/modules/cjs/loader.js:769:14)18at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12) {19}20at Function.Module._resolveFilename (internal/modules/cjs/loader.js:880:15)21at Function.Module._load (internal/modules/cjs/loader.js:725:27)22at Module.require (internal/modules/cjs/loader.js:952:19)23at require (internal/modules/cjs/helpers.js:88:18)24at Object.<anonymous> (/home/ram/Downloads/c

Using AI Code Generation

1const { start } = require('cypress-xvfb');2const cypress = require('cypress');3const xvfb = start();4cypress.run({5}).then((results) => {6    console.log(results);7    xvfb.stop();8});

Using AI Code Generation

1const cypress = require('cypress');2const xvfb = require('cypress-xvfb');3const cypress = require('cypress');4const xvfb = require('cypress-xvfb');5const cypress = require('cypress');6const xvfb = require('cypress-xvfb');7const cypress = require('cypress');8const xvfb = require('cypress-xvfb');9const cypress = require('cypress');10const xvfb = require('cypress-xvfb');11const cypress = require('cypress');12const xvfb = require('cypress-xvfb');13const cypress = require('cypress');14const xvfb = require('cypress-xvfb');15const cypress = require('cypress');16const xvfb = require('cypress-xvfb');17const cypress = require('cypress');18const xvfb = require('cypress-xvfb');19const cypress = require('cypress');20const xvfb = require('cypress-xvfb');21const cypress = require('cypress');22const xvfb = require('cypress-xvfb');23const cypress = require('cypress');24const xvfb = require('cypress-xvfb');

Using AI Code Generation

1const cypress = require('cypress');2const xvfb = require('xvfb');3xvfb.startSync();4cypress.run({5}).then((results) => {6    console.log(results);7}).catch((err) => {8    console.error(err);9}).finally(() => {10    xvfb.stopSync();11});12{13  }14{15  "scripts": {16  },17  "dependencies": {18  }19}20describe('Google Test', () => {21    it('Google Search', () => {22        cy.visit('/');23        cy.get('[name="q"]').type('Cypress');24        cy.get('[name="btnK"]').click();25    });26});27{28  runs: [ { state: 'passed', error: null, stats: [Object] } ],29  config: {

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