Best JavaScript code snippet using testcafe
native-dialogs-test.js
Source:native-dialogs-test.js  
...36    dialogsAPI.init();37    equal(dialogsInfoChangedEvents.length, 0);38    dialogsAPI.resetHandlers();39    equal(dialogsInfoChangedEvents.length, 1);40    deepEqual(dialogsInfoChangedEvents[0], createDefaultDialogsInfo());41});42test('Dialogs info changed event (init with info)', function () {43    const info = createDefaultDialogsInfo();44    info.expectAlertCount = 1;45    dialogsAPI.init(info);46    equal(dialogsInfoChangedEvents.length, 0);47    dialogsAPI.resetHandlers();48    equal(dialogsInfoChangedEvents.length, 1);49    deepEqual(dialogsInfoChangedEvents[0], createDefaultDialogsInfo());50});51test('Unexpected dialog errors', function () {52    dialogsAPI.init();53    window.alert();54    ok(typeof window.confirm() === 'undefined');55    ok(typeof window.prompt() === 'undefined');56    equal(unexpectedDialogErrors.length, 3);57});58test('Init with expected dialogs', function () {59    const info = createDefaultDialogsInfo();60    info.expectAlertCount         = 1;61    info.expectConfirmCount       = 2;62    info.expectPromptCount        = 2;63    info.expectedConfirmRetValues = [true, false];64    info.expectedPromptRetValues  = ['1', '2'];65    dialogsAPI.init($.extend({}, info));66    window.alert('Alert message');67    ok(window.confirm('Confirm message 1'));68    ok(!window.confirm('Confirm message 2'));69    equal(window.prompt('Prompt message 1'), '1');70    equal(window.prompt('Prompt message 2'), '2');71    dialogsAPI.checkExpectedDialogs();72    equal(unexpectedDialogErrors.length, 0);73    equal(wasNotExpectedDialogErrors.length, 0);74    equal(dialogsInfoChangedEvents.length, 5);75    info.alerts   = ['Alert message'];76    info.confirms = ['Confirm message 1', 'Confirm message 2'];77    info.prompts  = ['Prompt message 1', 'Prompt message 2'];78    deepEqual(dialogsInfoChangedEvents[4], info);79});80test('Handle dialogs', function () {81    const info = createDefaultDialogsInfo();82    dialogsAPI.init();83    dialogsAPI.handleAlert();84    dialogsAPI.handleConfirm(true);85    dialogsAPI.handleConfirm(false);86    dialogsAPI.handlePrompt('1');87    dialogsAPI.handlePrompt('2');88    window.alert('Alert message');89    ok(window.confirm('Confirm message 1'));90    ok(!window.confirm('Confirm message 2'));91    equal(window.prompt('Prompt message 1'), '1');92    equal(window.prompt('Prompt message 2'), '2');93    dialogsAPI.checkExpectedDialogs();94    equal(unexpectedDialogErrors.length, 0);95    equal(wasNotExpectedDialogErrors.length, 0);96    equal(dialogsInfoChangedEvents.length, 10);97    info.expectAlertCount         = 1;98    info.expectConfirmCount       = 2;99    info.expectPromptCount        = 2;100    info.expectedConfirmRetValues = [true, false];101    info.expectedPromptRetValues  = ['1', '2'];102    info.alerts                   = ['Alert message'];103    info.confirms                 = ['Confirm message 1', 'Confirm message 2'];104    info.prompts                  = ['Prompt message 1', 'Prompt message 2'];105    deepEqual(dialogsInfoChangedEvents[4], info);106});107test('Unexpected dialog error when there are several dialogs', function () {108    const info = createDefaultDialogsInfo();109    info.expectAlertCount = 1;110    dialogsAPI.init(info);111    window.alert();112    window.alert();113    equal(unexpectedDialogErrors.length, 1);114    dialogsAPI.checkExpectedDialogs();115    equal(unexpectedDialogErrors.length, 2);116    equal(wasNotExpectedDialogErrors.length, 0);117});118test('Was not expected dialog error', function () {119    const info = createDefaultDialogsInfo();120    info.expectAlertCount   = 1;121    info.expectConfirmCount = 1;122    info.expectPromptCount  = 1;123    dialogsAPI.init(info);124    dialogsAPI.checkExpectedDialogs();125    equal(wasNotExpectedDialogErrors.length, 3);126    equal(wasNotExpectedDialogErrors[0].dialog, 'alert');127    equal(wasNotExpectedDialogErrors[1].dialog, 'confirm');128    equal(wasNotExpectedDialogErrors[2].dialog, 'prompt');129});130test('Reset handlers', function () {131    const info = createDefaultDialogsInfo();132    info.expectAlertCount = 1;133    dialogsAPI.init(info);134    window.alert();135    equal(unexpectedDialogErrors.length, 0);136    equal(wasNotExpectedDialogErrors.length, 0);137    dialogsAPI.checkExpectedDialogs();138    dialogsAPI.resetHandlers();139    window.alert();140    equal(unexpectedDialogErrors.length, 1);141    equal(wasNotExpectedDialogErrors.length, 0);142});143test('Check unexpected dialogs', function () {144    dialogsAPI.init();145    window.alert('Alert message');...native_dialogs.js
Source:native_dialogs.js  
...7    unexpectedDialogErrors = [];8    wasNotExpectedDialogErrors = [];9    dialogsInfoChangedEvents = [];10};11function createDefaultDialogsInfo() {12    return {13        expectAlertCount: 0,14        expectConfirmCount: 0,15        expectPromptCount: 0,16        expectedConfirmRetValues: [],17        expectedPromptRetValues: [],18        expectBeforeUnload: false,19        alerts: [],20        confirms: [],21        prompts: [],22        beforeUnloadDialogAppeared: false23    };24}25DialogsAPI.on(DialogsAPI.UNEXPECTED_DIALOG_ERROR_EVENT, function (e) {26    unexpectedDialogErrors.push(e);27});28DialogsAPI.on(DialogsAPI.WAS_NOT_EXPECTED_DIALOG_ERROR_EVENT, function (e) {29    wasNotExpectedDialogErrors.push(e);30});31DialogsAPI.on(DialogsAPI.DIALOGS_INFO_CHANGED_EVENT, function (e) {32    dialogsInfoChangedEvents.push(e.info);33});34test('Dialogs info changed event (init without info)', function () {35    DialogsAPI.init();36    equal(dialogsInfoChangedEvents.length, 0);37    DialogsAPI.resetHandlers();38    equal(dialogsInfoChangedEvents.length, 1);39    deepEqual(dialogsInfoChangedEvents[0], createDefaultDialogsInfo());40});41test('Dialogs info changed event (init with info)', function () {42    var info = createDefaultDialogsInfo();43    info.expectAlertCount = 1;44    DialogsAPI.init(info);45    equal(dialogsInfoChangedEvents.length, 0);46    DialogsAPI.resetHandlers();47    equal(dialogsInfoChangedEvents.length, 1);48    deepEqual(dialogsInfoChangedEvents[0], createDefaultDialogsInfo());49});50test('Unexpected dialog errors', function () {51    DialogsAPI.init();52    window.alert();53    ok(typeof window.confirm() === 'undefined');54    ok(typeof window.prompt() === 'undefined');55    equal(unexpectedDialogErrors.length, 3);56});57test('Init with expected dialogs', function () {58    var info = createDefaultDialogsInfo();59    info.expectAlertCount = 1;60    info.expectConfirmCount = 2;61    info.expectPromptCount = 2;62    info.expectedConfirmRetValues = [true, false];63    info.expectedPromptRetValues = ['1', '2'];64    DialogsAPI.init($.extend({}, info));65    window.alert('Alert message');66    ok(window.confirm('Confirm message 1'));67    ok(!window.confirm('Confirm message 2'));68    equal(window.prompt('Prompt message 1'), '1');69    equal(window.prompt('Prompt message 2'), '2');70    DialogsAPI.checkExpectedDialogs();71    equal(unexpectedDialogErrors.length, 0);72    equal(wasNotExpectedDialogErrors.length, 0);73    equal(dialogsInfoChangedEvents.length, 5);74    info.alerts = ['Alert message'];75    info.confirms = ['Confirm message 1', 'Confirm message 2'];76    info.prompts = ['Prompt message 1', 'Prompt message 2'];77    deepEqual(dialogsInfoChangedEvents[4], info);78});79test('Handle dialogs', function () {80    var info = createDefaultDialogsInfo();81    DialogsAPI.init();82    DialogsAPI.handleAlert();83    DialogsAPI.handleConfirm(true);84    DialogsAPI.handleConfirm(false);85    DialogsAPI.handlePrompt('1');86    DialogsAPI.handlePrompt('2');87    window.alert('Alert message');88    ok(window.confirm('Confirm message 1'));89    ok(!window.confirm('Confirm message 2'));90    equal(window.prompt('Prompt message 1'), '1');91    equal(window.prompt('Prompt message 2'), '2');92    DialogsAPI.checkExpectedDialogs();93    equal(unexpectedDialogErrors.length, 0);94    equal(wasNotExpectedDialogErrors.length, 0);95    equal(dialogsInfoChangedEvents.length, 10);96    info.expectAlertCount = 1;97    info.expectConfirmCount = 2;98    info.expectPromptCount = 2;99    info.expectedConfirmRetValues = [true, false];100    info.expectedPromptRetValues = ['1', '2'];101    info.alerts = ['Alert message'];102    info.confirms = ['Confirm message 1', 'Confirm message 2'];103    info.prompts = ['Prompt message 1', 'Prompt message 2'];104    deepEqual(dialogsInfoChangedEvents[4], info);105});106test('Unexpected dialog error when there are several dialogs', function () {107    var info = createDefaultDialogsInfo();108    info.expectAlertCount = 1;109    DialogsAPI.init(info);110    window.alert();111    window.alert();112    equal(unexpectedDialogErrors.length, 1);113    DialogsAPI.checkExpectedDialogs();114    equal(unexpectedDialogErrors.length, 2);115    equal(wasNotExpectedDialogErrors.length, 0);116});117test('Was not expected dialog error', function () {118    var info = createDefaultDialogsInfo();119    info.expectAlertCount = 1;120    info.expectConfirmCount = 1;121    info.expectPromptCount = 1;122    DialogsAPI.init(info);123    DialogsAPI.checkExpectedDialogs();124    equal(wasNotExpectedDialogErrors.length, 3);125    equal(wasNotExpectedDialogErrors[0].dialog, 'alert');126    equal(wasNotExpectedDialogErrors[1].dialog, 'confirm');127    equal(wasNotExpectedDialogErrors[2].dialog, 'prompt');128});129test('Reset handlers', function () {130    var info = createDefaultDialogsInfo();131    info.expectAlertCount = 1;132    DialogsAPI.init(info);133    window.alert();134    equal(unexpectedDialogErrors.length, 0);135    equal(wasNotExpectedDialogErrors.length, 0);136    DialogsAPI.checkExpectedDialogs();137    DialogsAPI.resetHandlers();138    window.alert();139    equal(unexpectedDialogErrors.length, 1);140    equal(wasNotExpectedDialogErrors.length, 0);141});142test('Check unexpected dialogs', function () {143    DialogsAPI.init();144    window.alert('Alert message');...Using AI Code Generation
1import { Selector } from 'testcafe';2test('My first test', async t => {3        .typeText('#developer-name', 'John Smith')4        .click('#macos')5        .click('#submit-button');6    const articleHeader = await Selector('.result-content').find('h1');7    let headerText = await articleHeader.innerText;8});9import { Selector } from 'testcafe';10test('My first test', async t => {11        .typeText('#developer-name', 'John Smith')12        .click('#macos')13        .click('#submit-button');14    const articleHeader = await Selector('.result-content').find('h1');15    let headerText = await articleHeader.innerText;16});17createDefaultDialogsInfo()18import { createDefaultDialogsInfo } from 'testcafe-browser-tools';19const dialogsInfo = createDefaultDialogsInfo();20setNativeDialogHandler(fn [, dialogsInfo])Using AI Code Generation
1import { Selector } from 'testcafe';2test('My first test', async t => {3        .typeText('#developer-name', 'John Smith')4        .click('#submit-button');5    const articleHeader = await Selector('.result-content').find('h1');6    let headerText = await articleHeader.innerText;7});Using AI Code Generation
1import { createDefaultDialogsInfo } from 'testcafe-browser-tools';2test('My Test', async t => {3    const dialogsInfo = await createDefaultDialogsInfo();4    console.log(dialogsInfo);5});6### createDefaultDialogsInfo(dialogs)7import { Selector } from 'testcafe';e-browsr-tools8test(' y Test', as`nc t => {9    const dialogsInfo = await createDefaultDialogsInfo({10        alert: { text: 'Alert text' },11        confirm: { text:h'Conttrm text' },12        prompt: { text: 'Prompt text' },13        beforeUnload: { teps: 'BeforeUnload text' },14        leavePage: { text: 'LeavePage text' }15    });16    console.log(dialogsInfo);17});18### setMock (browserId, dialogHandler)Using AI Code Generation
1import { createDefaultDialogsInfo } from 'testcafe';2fixture dMy fixture`evexpress.github.io/testcafe/example/`;3test('My first test', async t => {4        .typeText('#developer-name', 'John Smith')5        .click('#submit-button');6    const articleHeader = await Selector('.result-content').find('h1');7    let headerText = await articleHeader.innerText;8});Using AI Code Generation
1import { createDefaultDilogsInfo } from ""testcafe-browser-tools";2test(eMy Test', async t => {3        .click('#populate')4        .click('#submit-button');5});6{7}Using AI Code Generation
1import { createDefaultDialogsInfo } from 'testcaferowser-tools";2test('My Test', async t => {3        .click('#populate')4        .click('#submit-button');5});6{7}8import { createDefaultDialogsInfo } from 'testcafe-browser-tools';9test('My Test', async t => {10    const dialogsInfo = await createDefaultDialogsInfo();11    console.log(dialogsInfo);12});13### createDefaultDialogsInfo(dialogs)14import { createDefaultDialogsInfo } from 'testcafe-browser-tools';15test('My Test', async t => {16    const dialogsInfo = await createDefaultDialogsInfo({17        alert: { text: 'Alert text' },18        confirm: { text: 'Confirm text' },19        prompt: { text: 'Prompt text' },20        beforeUnload: { text: 'BeforeUnload text' },21        leavePage: { text: 'LeavePage text' }22    });23    console.log(dialogsInfo);24});25### setMock (browserId, dialogHandler)Using AI Code Generation
1import { createDefaultDialogsInfo } from 'testcafe';2import { Selector } from 'testcafe';3test('My Test', async t => {4    const dialogsInfo = createDefaultDialogsInfo();5    dialogsInfo.confirmDialog = async (text, url) => {6        return true;7    };8        .setNativeDialogHandler(dialogsInfo)9        .click('#populate')10        .click('#submit-button');11});Using AI Code Generation
1var createDefaultDialogsInfo = require('testcafe').createDefaultDialogsInfo;2var dialogsInfo = createDefaultDialogsInfo();3dialogsInfo.onBeforeUnload = function (e) {4    return true;5};6var createTestCafe = require('testcafe');7var testcafe = null;8createTestCafe('localhost', 1337, 1338)9    .then(function (tc) {10        testcafe = tc;Using AI Code Generation
1import { Selector } from 'testcafe';2import { createDefaultDialogsInfo } from 'testcafe-browser-provider-electron';3fixture('TestCafe Electron Demo')4    .beforeEach(async t => {5        t.ctx.dialogsInfo = await createDefaultDialogsInfo(t);6    });7test('My test', async t => {8        .click('#populate')        return runner9        .click(' submit-button')10        .handleAlert(t.ctx.dialogsInfo, { accept: true })11        .expect(Selector(' article-header').innerText).eql('Thank you, John Smith!');12});Using AI Code Generation
1import { Selector } from 'testcafe';2import { createTestCafe, createDefaultDialogsInfo } from 'testcafe';3test('My test', async t => {4        .click(' populate')5        .     ('#submit-button');6});7const dialogsInfo = createDefaultDialogsInfo();8dialogsInfo.beforeUnloadDialog = {9    hasBeforeUnloadDialog: () => true,10    getBeforeUnloadDialogMessage: () => 'Dialog text'   .src('test.js')11};            .browsers('chrome')12createTest afe('localhost', 1337, 1338)13    .then(testcafe => {14        const runner = testcafe.createRunner();15            .src('test.js')16            .browsers('chrome')17            .run({18            });19    });20import { Selector } from 'testcafe';21import { createTestCafe, createDefaultDialogsInfo } from 'testcafe';22test('My test', async t => {23        . lic ('#populate')24        .click('#submit-button');25});26const dialogsInfo = createDefaultDialogsInfo();27dialogsInfo.beforeUnloadDialog = {28    hasBeforeUnloadDialog: () => true,29    getBeforeUnloadDialogMes age: () => 'Dialog  ext',30    setBeforeUnloadDialogHandler: ( andler, successCallback,  rrorCallback) => {31        successCallback();32    }33};34createTestCafe('localhost', 1337, 1338)35    .then(testcafe => {36        const runner = testcafe.createRunner();37            .src('test.js')38            .browsers('chrome')39            .run({40            });41    });42testcafe chrome test  .run();43    })44    .then(function (failCount) {45        console.log('Tests failed: ' + failCount);46        testcafe.close();47    });48var createLiveModeRunner = require('testcafe').createLiveModeRunner;49var testcafe = null;50createTestCafe('localhost', 1337, 1338)51    .then(function (tc) {52        testcafe = tc;53        var runner = testcafe.createLiveModeRunner();54            .src('test.js')55            .browsers('chrome')56            .run();57    })58    .then(function () {59        testcafe.close();60    });61var createLiveModeRunner = require('testcafe').createLiveModeRunner;62var testcafe = null;63createTestCafe('localhost', 1337, 1338)64    .then(function (tc) {65        testcafe = tc;66        var runner = testcafe.createLiveModeRunner();67            .src('test.js')68            .browsers('chrome')69            .run();70    })71    .then(function () {72        testcafe.close();73    });74var createReporter = require('testcafe').createReporter;75var reporterPlugin = createReporter('my-reporter', {76});eUsing AI Code Generation
1import { Selector } from 'testcafe';2import { createDefaultDialogsInfo } from 'testcafe-browser-provider-electron';3fixture('TestCafe Electron Demo')4    .beforeEach(async t => {5        t.ctx.dialogsInfo = await createDefaultDialogsInfo(t);6    });7test('My test', async t => {8        .click('#populate')9        .click('#submit-button')10        .handleAlert(t.ctx.dialogsInfo, { accept: true })11        .expect(Selector('#article-header').innerText).eql('Thank you, John Smith!');12});13var createRole = require('testcafe').createRole;Using AI Code Generation
1import { createDefaultDialogsInfo } from 'testcafe-browser-tools';2const dialogsInfo = createDefaultDialogsInfo();3    .setNativeDialogHandler(() => true)4    .click('#populate')5    .setNativeDialogHandler(() => false)6    .click('#populate');7t.setFilesToUpload( path | path1, path2, ... )8t.setFilesToUpload('./uploads/file1.png');9t.setFilesToUpload('/home/user/files/file1.png');10t.setFilesToUpload('./uploads/*.png');11import { Selector } from 'testcafe';12test('Upload file', async t => {13        .setFilesToUpload('../uploads/file1.txt')14        .click('#uploadButton')15        .expect(Selector('#uploadedFilePath').innerText).eql('C:\\fakepath\\file1.txt');16});17import { Selector } from 'testcafe';18test('Upload multiple files', async t => {19        .setFilesToUpload('./uploads/file1.txt', './uploads/file2.txt')20        .click('#uploadButton')21        .expect(Selector('#uploadedFilePath').innerText).eql('C:\\fakepath\\file1.txt, C:\\fakepath\\file2.txt');22});Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.
You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.
Get 100 minutes of automation test minutes FREE!!
