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How to use renderClass method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ParticlesSystem.js

1/*2GNU GENERAL PUBLIC LICENSE3Version 3, 29 June 20074Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>5Everyone is permitted to copy and distribute verbatim copies6of this license document, but changing it is not allowed.7Copyright (C) 2019, By Alexandre Belin8*/9function ParticleObj(Emitter, ParticlesName, RenderClass, PartPosX, PartPosY, Transition, Frequency, PartSize, Amplitude, _Index, ParticlesDirection){10    this.Emitter = Emitter;11    this.ParticlesName = ParticlesName;12    this.RenderClass = RenderClass || 'NoClass';13    this.PartPosX = PartPosX;14    this.PartPosY = PartPosY;15    this.Transition = Transition;16    this.Frequency = Frequency;17    this.PartSize = PartSize;18    this.Amplitude = Amplitude;19    this._Index = _Index;20    this.ParticlesDirection = ParticlesDirection;21    var _ParticleDom = document.createElement('div');22    _ParticleDom.id = this.ParticlesName + '-' + this._Index;23    _ParticleDom.classList.add(this.RenderClass);24    _ParticleDom.style.position = 'absolute';25    _ParticleDom.style.transition = 'all ' + (this.Transition / 1000) + 's linear';26    _ParticleDom.style.width = this.PartSize + 'px';27    _ParticleDom.style.height = this.PartSize + 'px';28    _ParticleDom.style.top = Math.floor(this.PartPosY) + 'px';29    _ParticleDom.style.left = Math.floor(this.PartPosX) + 'px';30    _ParticleDom.style.zIndex = document.getElementById(this.Emitter).style.zIndex;31    document.body.appendChild(_ParticleDom);32    this.AnimateParticle = function(){33        var _this = this;34        setTimeout(function(){35            _ParticleDom.style.transform = 'translate3d(' + (_this.ParticlesDirection[0] * _this.Amplitude) + 'px, ' + (_this.ParticlesDirection[1] * _this.Amplitude) + 'px, 0)';36        }, 20);37        setTimeout(function(){38            _ParticleDom.style.transition = 'all 0.25s';39            _ParticleDom.style.opacity = '0';40        }, (_this.Transition - 250));41        setTimeout(function(){42            _ParticleDom.remove();43        }, _this.Transition);44    };45}46/*=================================================*/47function ParticleSysBase(Emitter, ParticlesName, RenderClass, Transition, SizeMin, SizeMax, Amplitude){48    this.Emitter = Emitter;49    this.ParticlesName = ParticlesName;50    this.RenderClass = RenderClass;51    this.Transition = Transition;52    this.SizeMin = SizeMin;53    this.SizeMax = SizeMax;54    this.Amplitude = Amplitude;55}56/*=================================================*/5758function ParticleSys(Emitter, ParticlesName, RenderClass, Transition, SizeMin, SizeMax, Amplitude, Frequency, ParticlesDirection){59    ParticleSysBase.call(this, Emitter, ParticlesName, RenderClass, Transition, SizeMin, SizeMax, Amplitude);60    this.Frequency = Frequency;61    this.ParticlesDirection = ParticlesDirection;62    var PartEmition;63    this.KillParticles = function(){64        clearInterval(PartEmition);65    };66    this.RenderParticles = function(){67        var _this = this;68        var i = 0;69        PartEmition = setInterval(function(){70            var EmitterSizeX = document.getElementById(_this.Emitter).getBoundingClientRect().width;71            var EmitterSizeY = document.getElementById(_this.Emitter).getBoundingClientRect().height;72            var EmitterPosX = document.getElementById(_this.Emitter).getBoundingClientRect().left;73            var EmitterPosY = document.getElementById(_this.Emitter).getBoundingClientRect().top;74            var PartSize = Math.floor(Math.random() * (_this.SizeMax - _this.SizeMin)) + _this.SizeMin;75            var PartPosX = (Math.floor(Math.random() * ((EmitterPosX + EmitterSizeX) - EmitterPosX)) + EmitterPosX) - (PartSize / 2);76            var PartPosY = (Math.floor(Math.random() * ((EmitterPosY + EmitterSizeY) - EmitterPosY)) + EmitterPosY) - (PartSize / 2);77            var _Particle = new ParticleObj(_this.Emitter, _this.ParticlesName, _this.RenderClass, PartPosX, PartPosY, _this.Transition, _this.Frequency, PartSize, _this.Amplitude, i, _this.ParticlesDirection);78            _Particle.AnimateParticle();79            i++;80        }, _this.Frequency);81    };82    }83    ParticleSys.prototype = Object.create(ParticleSysBase.prototype);84    ParticleSys.prototype.constructor = ParticleSys;85    /*=================================================*/86    function ParticleExplosionSys(Emitter, ParticlesName, RenderClass, Transition, SizeMin, SizeMax, Amplitude, ParticlesQty){87    ParticleSysBase.call(this, Emitter, ParticlesName, RenderClass, Transition, SizeMin, SizeMax, Amplitude);88    this.ParticlesQty = ParticlesQty;89    this.ParticlesArray = [];90    this.RenderParticles = function(){91        for(var i = 0 ; i < this.ParticlesQty ; i++){92            var EmitterSizeX = document.getElementById(this.Emitter).getBoundingClientRect().width;93            var EmitterSizeY = document.getElementById(this.Emitter).getBoundingClientRect().height;94            var EmitterPosX = document.getElementById(this.Emitter).getBoundingClientRect().left;95            var EmitterPosY = document.getElementById(this.Emitter).getBoundingClientRect().top;96            var PartSize = Math.floor(Math.random() * (this.SizeMax - this.SizeMin)) + this.SizeMin;97            var PartPosX = (Math.floor(Math.random() * ((EmitterPosX + EmitterSizeX) - EmitterPosX)) + EmitterPosX) - (PartSize / 2);98            var PartPosY = (Math.floor(Math.random() * ((EmitterPosY + EmitterSizeY) - EmitterPosY)) + EmitterPosY) - (PartSize / 2);99            var DirectionX = (Math.random() * 2) - 1;100            var DirectionY = (Math.random() * 2) - 1;101            this.ParticlesDirection = [DirectionX, DirectionY];102            var _Particle = new ParticleObj(this.Emitter, this.ParticlesName, this.RenderClass, PartPosX, PartPosY, this.Transition, this.Frequency, PartSize, this.Amplitude, i, this.ParticlesDirection);103            _Particle.AnimateParticle();104        }105    };106}107ParticleExplosionSys.prototype = Object.create(ParticleSysBase.prototype);
...

state_widget.js

Source: state_widget.js

1odoo.define('web.statetest', function (require) {2    "use strict";3    var fields = require('web.basic_fields');4    var registry = require('web.field_registry');5    var core = require('web.core');6    var field_utils = require('web.field_utils');7    var Widget = require('web.Widget');8    var widgetRegistry = require('web.widget_registry');9    var qweb = core.qweb;10    var _t = core._t;11    var StateTest = fields.InputField.extend({12        className: 'o_field_status',13        supportedFieldTypes: ['char'],14        /**15         * Urls are links in readonly mode.16         *17         * @override18         */19        init: function () {20            this._super.apply(this, arguments);21            this.tagName = this.mode === 'readonly' ? 'div' : 'input';22        },23        //--------------------------------------------------------------------------24        // Public25        //--------------------------------------------------------------------------26        /**27         * Returns the associated link.28         *29         * @override30         */31        getFocusableElement: function () {32            return this.mode === 'readonly' ? this.$el : this._super.apply(this, arguments);33        },34        //--------------------------------------------------------------------------35        // Private36        //--------------------------------------------------------------------------37        /**38         * In readonly, the widget needs to be a link with proper href and proper39         * support for the design, which is achieved by the added classes.40         *41         * @override42         * @private43         */44        _renderReadonly: function () {45            var renderTxt = 'Unfixed';46            var renderClass = 'grey';47            if (this.value == '0') {48                renderTxt = 'Fixed';49                renderClass = 'green';50            } else if (this.value == '1') {51                renderTxt = 'Wont fix';52                renderClass = 'red';53            } else if (this.value == '3') {54                renderTxt = 'Need further discussion';55                renderClass = 'orange';56            } else if (this.value == '4') {57                renderTxt = 'Can not reproduce';58                renderClass = 'purple';59            }60            this.$el.text(renderTxt)61                .addClass('o_form_uri o_text_overflow')62                .attr('data-target', '_blank')63                .attr('class', renderClass);64        }65    });66//viewRegistry.add('web.statetest', StateTest);67    registry.add('state_test', StateTest);68////////////////69    var TStateTest = fields.InputField.extend({70        className: 'o_field_status',71        supportedFieldTypes: ['char'],72        /**73         * Urls are links in readonly mode.74         *75         * @override76         */77        init: function () {78            this._super.apply(this, arguments);79            this.tagName = this.mode === 'readonly' ? 'div' : 'input';80        },81        //--------------------------------------------------------------------------82        // Public83        //--------------------------------------------------------------------------84        /**85         * Returns the associated link.86         *87         * @override88         */89        getFocusableElement: function () {90            return this.mode === 'readonly' ? this.$el : this._super.apply(this, arguments);91        },92        //--------------------------------------------------------------------------93        // Private94        //--------------------------------------------------------------------------95        /**96         * In readonly, the widget needs to be a link with proper href and proper97         * support for the design, which is achieved by the added classes.98         *99         * @override100         * @private101         */102        _renderReadonly: function () {103            var renderTxt = 'Untested';104            var renderClass = 'grey';105            if (this.value == '0') {106                renderTxt = 'Passed';107                renderClass = 'green'108            } else if (this.value == '1') {109                renderTxt = 'Failed';110                renderClass = 'red'111            } else if (this.value == '3') {112                renderTxt = 'Need further discussion';113                renderClass = 'orange'114            } else if (this.value == '4') {115                renderTxt = 'Can not reproduce';116            }117            this.$el.text(renderTxt)118                .addClass('o_form_uri o_text_overflow')119                .attr('data-target', '_blank')120                .attr('class', renderClass);121        }122    });123//viewRegistry.add('web.statetest', StateTest);124    registry.add('tester_state_test', TStateTest);125    return StateTest;126});127odoo.define('web.link_minimize', function (require) {128    "use strict";129    var AbstractField = require('web.AbstractField');130    var field_registry = require('web.field_registry');131    var LinkMinimize = AbstractField.extend({132        _render: function () {133            if (this.value) {134                this.$el.html('<a href="' + this.value + '" target="_blank">Open Image / Video In New Tab</a>');135            }136        }137    });138    field_registry.add('link_minimize', LinkMinimize);...

Class.jsx

Source: Class.jsx

...84            </div>85          </div>86          <div className='col-8'>87            <div className='classOne pb-5'>88              <button className='btn border' onClick={() => this.renderClass('v1')}>89                <img src="./img/v1.png" width={100} alt='img' />90              </button>91              <button className='btn border mx-1' onClick={() => this.renderClass('v2')}>92                <img src="./img/v2.png" width={100} alt='img' />93              </button>94              <button className='btn border' onClick={() => this.renderClass('v3')}>95                <img src="./img/v3.png" width={100} alt='img' />96              </button>97              <button className='btn border ml-1' onClick={() => this.renderClass('v4')}>98                <img src="./img/v4.png" width={100} alt='img' />99              </button>100            </div>101            <div className='classTwo mt-5'>102              <button className='btn border' onClick={() => this.renderClass('v5')}>103                <img src="./img/v5.png" width={100} alt='img' />104              </button>105              <button className='btn border mx-1' onClick={() => this.renderClass('v6')}>106                <img src="./img/v6.png" width={100} alt='img' />107              </button>108              <button className='btn border' onClick={() => this.renderClass('v7')}>109                <img src="./img/v7.png" width={100} alt='img' />110              </button>111              <button className='btn border ml-1' onClick={() => this.renderClass('v8')}>112                <img src="./img/v8.png" width={100} alt='img' />113              </button>114            </div>115            <div className='classTwo mt-5'>116              <button className='btn border' onClick={() => this.renderClass('v9')}>117                <img src="./img/v9.png" width={100} alt='img' />118              </button>119            </div>120          </div>121        </div>122      </div>123    )124  }...

WizardConfigure.js

Source: WizardConfigure.js

1import React from 'react'2import PropTypes from 'prop-types'3import { accountStore } from 'stores/account'4import WizardConfigureGeneric from '../Common/WizardConfigure/WizardConfigureGeneric'5import WizardConfigureGmail from '../Common/WizardConfigure/WizardConfigureGmail'6import WizardConfigureMicrosoft from '../Common/WizardConfigure/WizardConfigureMicrosoft'7import WizardConfigureContainer from '../Common/WizardConfigure/WizardConfigureContainer'8import WizardConfigureDefaultLayout from '../Common/WizardConfigure/WizardConfigureDefaultLayout'9import SERVICE_TYPES from 'shared/Models/ACAccounts/ServiceTypes'10export default class WizardConfigure extends React.Component {11  /* **************************************************************************/12  // Class13  /* **************************************************************************/14  static propTypes = {15    serviceId: PropTypes.string.isRequired,16    onRequestCancel: PropTypes.func.isRequired17  }18  /* **************************************************************************/19  // Component lifecycle20  /* **************************************************************************/21  componentDidMount () {22    accountStore.listen(this.accountUpdated)23  }24  componentWillUnmount () {25    accountStore.unlisten(this.accountUpdated)26  }27  componentWillReceiveProps (nextProps) {28    if (this.props.mailboxId !== nextProps.mailboxId) {29      this.setState({30        serviceType: (accountStore.getState().getService(nextProps.serviceId) || {}).type31      })32    }33  }34  /* **************************************************************************/35  // Data lifecycle36  /* **************************************************************************/37  state = {38    serviceType: (accountStore.getState().getService(this.props.serviceId) || {}).type39  }40  accountUpdated = (accountState) => {41    this.setState({42      serviceType: (accountState.getService(this.props.serviceId) || {}).type43    })44  }45  /* **************************************************************************/46  // Rendering47  /* **************************************************************************/48  render () {49    const { onRequestCancel, serviceId, ...passProps } = this.props50    const { serviceType } = this.state51    let RenderClass52    switch (serviceType) {53      case SERVICE_TYPES.GENERIC:54        RenderClass = WizardConfigureGeneric55        break56      case SERVICE_TYPES.GOOGLE_MAIL:57      case SERVICE_TYPES.GOOGLE_INBOX:58        RenderClass = WizardConfigureGmail59        break60      case SERVICE_TYPES.MICROSOFT_MAIL:61        RenderClass = WizardConfigureMicrosoft62        break63      case SERVICE_TYPES.CONTAINER:64        RenderClass = WizardConfigureContainer65        break66      default:67        RenderClass = WizardConfigureDefaultLayout68        break69    }70    return (<RenderClass onRequestCancel={onRequestCancel} serviceId={serviceId} {...passProps} />)71  }...

main.js

Source: main.js

1$(document).ready(function () {2  const $posts = $("#list-arts")[0],3    BASEURL = "/articles",4    $categories = $('#block-tags')[0],5    $slider = $('#wrap-slider')[0],6    $featuredPost = $('#featured-post')[0]7  $mainPposts = $('#main-posts')[0];8  //////  CLASS API //////////9  class ArtApi {10    static fetch() {11      return fetch(BASEURL, { method: "get" }).then((res) => {12        return res.json();13      });14    }15    static remove(id) {16      return fetch(`delete/${id}`, { method: "delete" })17        .then((res) => { 18          if (!res.ok) {            19            return  alert(res.statusText)20        }          21          return res.json() }22        )23    }24  };25  ////// api fetch ///////26  let rendering = () => {27    let renderClass = new RenderHTML();28    ArtApi.fetch().then((backendArticles) => {29      articles = backendArticles.concat();30      articles.forEach((item, index) => {31        let dataPost = renderClass.getDataPost(item);32        renderClass.getCategories(item);33        if (renderClass.randomPost == index) renderClass.showRandomPost(item, dataPost);34        if (index < 5) {35          renderClass.getSlider(item, dataPost);36          indexHtml.cardsEmpty = `<div class="col-12 col-sm-6"><h2> No posts </h2></div>`;37        } else {38          indexHtml.cardsEmpty = '';39          renderClass.getCards(item, dataPost);40        }41      });42      $featuredPost.innerHTML = indexHtml.featuredPost;43      $categories.innerHTML = indexHtml.categories;44      $posts.innerHTML = indexHtml.cardsEmpty + indexHtml.cards;45      $slider.innerHTML = indexHtml.slider;46      indexHtml.categories = '';47      indexHtml.cards = '';48      indexHtml.slider = '';49      renderClass.Set = new Set();50    })51      .then(() => {52        let script = document.createElement('script');53        let body = $('body')[0];54        script.type = 'text/javascript';55        script.src = '/public/js/staticHtml.js';56        body.appendChild(script);57        $(".remove_post").click(function () {58          var question = confirm('Are you sure want to delete this post?');59          if (question) {60            const postId = $(this).attr("data-id");61            ArtApi.remove(postId).then((post) => {62              articles = articles.filter(function (item) {63                if (item._id !== post._id) {64                  renderClass.getCategories(item);65                } else {66                  $(`.card-post`).remove(`div[data-id='${postId}']`);67                  if (articles.length <= 6) {68                    $posts.innerHTML = `<div class="col-12 col-sm-6"><h2> No posts </h2></div>`;69                  }70                }71                return item._id !== post._id;72              });73              $categories.innerHTML = indexHtml.categories;74            });75          };76          renderClass.Set = new Set();77          indexHtml.categories = '';78        });79      });80  }81  rendering();...

util.js

Source: util.js

1/**2 * å®ä¾åRender3 * 4 * @param {}5 *            renderClass6 * @param {}7 *            config8 * @return {}9 */10talent.qe.instanceRender = function(renderClass, config) {11	var str = "var render = new " + renderClass + "();";12	eval (str);13	render.setConfig(config);14	return render;15}16/**17 * invoke render18 * 19 * @param {}20 *            renderClass21 * @param {}22 *            config23 */24talent.qe.invokeRender = function(renderClass, config) {25	try  {26		var render = talent.qe.instanceRender(renderClass, config);27		render.render();28	}catch (e) {29		alert("error message from talent.qe.invokeRender: render class=" + renderClass + "\r\n" + e);30	}31}32/**33 * åºç¡æ¸²æè34 */35talent.qe.BaseRender = talent.Class.extend({36	/**37	 * ææçæ¸²æé½æä¸ä¸ªsetConfigæ¹æ³38	 */39	setConfig:function (config) {40		this.config = config;41	},42	init : function (){43		44	}45});46/**47 * åºç¡åå»ºè48 */49talent.qe.BaseCreator = talent.Class.extend({50	/**51	 * ææçæ¸²æé½æä¸ä¸ªsetConfigæ¹æ³52	 */53	setConfig:function (config) {54		this.config = config;55	},56	getConfig:function() {57		return this.config;58	},59	init : function (){60		61	}...

Handlers.js

Source: Handlers.js

1import { todos } from "./app"2import { Render } from "./Render"3const renderClass = new Render()4export class Handlers {5    //mark todo as done6    handleCheckbox(e) {7        for (let i = 0; i < todos.length; i++) {8            if (todos[i].id === e.target.parentNode.id) {9                todos[i].done = !todos[i].done;10                renderClass.render()11            }12        }13    }14    //delete a todo15    deleteHandler(e) {16        let icons = document.querySelectorAll(".trashicon")17        for (let i = 0; i < icons.length; i++) {18            if (icons[i].id === e.target.id) {19                e.target.parentNode.classList.add("deletedElement")20                todos.splice(i, 1)21                setTimeout(() => renderClass.render(), 300)22            }23        }24    }25    //set due date for a todo26    calendarHandler(e, date) {27        for (let todo of todos) {28            if (todo.id == e.target.parentElement.id) {29                todo.dueDate = date30                renderClass.render()31            }32        }33    }...

StepWrapper.jsx

Source: StepWrapper.jsx

1import React from "react";2import Step from "./Step";3import "./stepWrapper.css";4function StepWrapper(props) {5  const { activeForm } = props; //form1=> success6  const steps = ["1", "2", "3"];7  return (8    <div className="step-wrapper">9      {steps.map((step, index) => (10        <Step11          step={step}12          key={index}13          renderClass={14            activeForm.substring(4) === step15              ? "active-step"16              : activeForm.substring(4) > step17              ? "success"18              : null19          }20        />21      ))}22      {/* <Step step="1" renderClass="active-step" />23      <Step step="2" renderClass="" />24      <Step step="3" renderClass="" /> */}25    </div>26  );27}...

Using AI Code Generation

1const { renderClass } = require('playwright/lib/server/supplements/recorder/recorderApp');2const { Page } = require('playwright/lib/server/supplements/recorder/recorderTypes');3const page = new Page();4const { html, css } = renderClass(page);5fs.writeFileSync('test.html', html);6fs.writeFileSync('test.css', css);7const { exec } = require('child_process');8exec('start test.html');9const { chromium } = require('playwright');10(async () => {11  const browser = await chromium.launch();12  const context = await browser.newContext();13  const page = await context.newPage();14  await page.click('#navbar > div.navbar__inner > div.navbar__items > div:nth-child(2) > a');15  await page.click('#navbar > div.navbar__inner > div.navbar__items > div:nth-child(3) > a');16  await page.click('#navbar > div.navbar__inner > div.navbar__items > div:nth-child(4) > a');17  await page.click('#navbar > div.navbar__inner > div.navbar__items > div:nth-child(5) > a');18  await page.click('#navbar > div.navbar__inner > div.navbar__items > div:nth-child(6) > a');19  await page.click('#navbar > div.navbar__inner > div.navbar__items > div:nth-child(7) > a');20  await page.click('#navbar > div

Using AI Code Generation

1const { renderClass } = require('@playwright/test/lib/test');2const { test } = require('@playwright/test');3test('test', async ({ page }) => {4  await renderClass(page, 'button', 'my-class');5});6const { test, expect } = require('@playwright/test');7test('test', async ({ page }) => {8  await page.click('text=Get started');9  await page.click('text=Docs');10  await page.click('text=API');11  await page.click('text=Test');12  await page.click('text=Test runner');13  await page.click('text=Test.fixtures');

StackOverFlow community discussions

Questions

Discussion

How to run a list of test suites in a single file concurrently in jest?

Is it possible to get the selector from a locator object in playwright?

Jest + Playwright - Test callbacks of event-based DOM library

firefox browser does not start in playwright

Running Playwright in Azure Function

Assuming you are not running test with the --runinband flag, the simple answer is yes but it depends ????

There is a pretty comprehensive GitHub issue jest#6957 that explains certain cases of when tests are run concurrently or in parallel. But it seems to depend on a lot of edge cases where jest tries its best to determine the fastest way to run the tests given the circumstances.

To my knowledge there is no way to force jest to run in parallel.

Aside

Have you considered using playwright instead of puppeteer with jest? Playwright has their own internally built testing library called @playwright/test that is used in place of jest with a similar API. This library allows for explicitly defining test groups in a single file to run in parallel (i.e. test.describe.parallel) or serially (i.e. test.describe.serial). Or even to run all tests in parallel via a config option.

// parallel
test.describe.parallel('group', () => {
  test('runs in parallel 1', async ({ page }) => {});
  test('runs in parallel 2', async ({ page }) => {});
});

// serial
test.describe.serial('group', () => {
  test('runs first', async ({ page }) => {});
  test('runs second', async ({ page }) => {});
});

https://stackoverflow.com/questions/73497773/how-to-run-a-list-of-test-suites-in-a-single-file-concurrently-in-jest

Well this is one way, but not sure if it will work for all possible locators!.

// Get a selector from a playwright locator
import { Locator } from "@playwright/test";
export function extractSelector(locator: Locator) {
    const selector = locator.toString();
    const parts = selector.split("@");
    if (parts.length !== 2) { throw Error("extractSelector: susupect that this is not a locator"); }
    if (parts[0] !== "Locator") { throw Error("extractSelector: did not find locator"); }
    return parts[1];
}

https://stackoverflow.com/questions/72044959/is-it-possible-to-get-the-selector-from-a-locator-object-in-playwright

This question is quite close to a "need more focus" question. But let's try to give it some focus:

Does Playwright has access to the cPicker object on the page? Does it has access to the window object?

Yes, you can access both cPicker and the window object inside an evaluate call.

Should I trigger the events from the HTML file itself, and in the callbacks, print in the DOM the result, in some dummy-element, and then infer from that dummy element text that the callbacks fired?

Exactly, or you can assign values to a javascript variable:

const cPicker = new ColorPicker({
  onClickOutside(e){
  },
  onInput(color){
    window['color'] = color;
  },
  onChange(color){
    window['result'] = color;
  }
})

And then

it('Should call all callbacks with correct arguments', async() => {
    await page.goto(`http://localhost:5000/tests/visual/basic.html`, {waitUntil:'load'})

    // Wait until the next frame
    await page.evaluate(() => new Promise(requestAnimationFrame))

    // Act
   
    // Assert
    const result = await page.evaluate(() => window['color']);
    // Check the value
})

https://stackoverflow.com/questions/65477895/jest-playwright-test-callbacks-of-event-based-dom-library

I found the error. It was because of some missing libraries need. I discovered this when I downgraded playwright to version 1.9 and ran the the code then this was the error msg:

(node:12876) UnhandledPromiseRejectionWarning: browserType.launch: Host system is missing dependencies!

Some of the Universal C Runtime files cannot be found on the system. You can fix
that by installing Microsoft Visual C++ Redistributable for Visual Studio from:
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

Full list of missing libraries:
    vcruntime140.dll
    msvcp140.dll
Error
    at Object.captureStackTrace (D:\Projects\snkrs-play\node_modules\playwright\lib\utils\stackTrace.js:48:19)
    at Connection.sendMessageToServer (D:\Projects\snkrs-play\node_modules\playwright\lib\client\connection.js:69:48)
    at Proxy.<anonymous> (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:64:61)
    at D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:64:67
    at BrowserType._wrapApiCall (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:77:34)
    at BrowserType.launch (D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:55:21)
    at D:\Projects\snkrs-play\index.js:4:35
    at Object.<anonymous> (D:\Projects\snkrs-play\index.js:7:3)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:12876) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:12876) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

A list of missing libraries was provided. After successful installments, firefox ran fine. I upgraded again to version 1.10 and firefox still works.

https://stackoverflow.com/questions/66984974/firefox-browser-does-not-start-in-playwright

I found the error. It was because of some missing libraries need. I discovered this when I downgraded playwright to version 1.9 and ran the the code then this was the error msg:

(node:12876) UnhandledPromiseRejectionWarning: browserType.launch: Host system is missing dependencies!

Some of the Universal C Runtime files cannot be found on the system. You can fix
that by installing Microsoft Visual C++ Redistributable for Visual Studio from:
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

Full list of missing libraries:
    vcruntime140.dll
    msvcp140.dll
Error
    at Object.captureStackTrace (D:\Projects\snkrs-play\node_modules\playwright\lib\utils\stackTrace.js:48:19)
    at Connection.sendMessageToServer (D:\Projects\snkrs-play\node_modules\playwright\lib\client\connection.js:69:48)
    at Proxy.<anonymous> (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:64:61)
    at D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:64:67
    at BrowserType._wrapApiCall (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:77:34)
    at BrowserType.launch (D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:55:21)
    at D:\Projects\snkrs-play\index.js:4:35
    at Object.<anonymous> (D:\Projects\snkrs-play\index.js:7:3)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:12876) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:12876) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

A list of missing libraries was provided. After successful installments, firefox ran fine. I upgraded again to version 1.10 and firefox still works.

https://stackoverflow.com/questions/66984974/firefox-browser-does-not-start-in-playwright

Blogs

Check out the latest blogs from LambdaTest on this topic:

LIVE With Automation Testing For OTT Streaming Devices ????

People love to watch, read and interact with quality content — especially video content. Whether it is sports, news, TV shows, or videos captured on smartphones, people crave digital content. The emergence of OTT platforms has already shaped the way people consume content. Viewers can now enjoy their favorite shows whenever they want rather than at pre-set times. Thus, the OTT platform’s concept of viewing anything, anytime, anywhere has hit the right chord.

Difference Between Web And Mobile Application Testing

Smartphones have changed the way humans interact with technology. Be it travel, fitness, lifestyle, video games, or even services, it’s all just a few touches away (quite literally so). We only need to look at the growing throngs of smartphone or tablet users vs. desktop users to grasp this reality.

A Comprehensive Guide On JUnit 5 Extensions

JUnit is one of the most popular unit testing frameworks in the Java ecosystem. The JUnit 5 version (also known as Jupiter) contains many exciting innovations, including support for new features in Java 8 and above. However, many developers still prefer to use the JUnit 4 framework since certain features like parallel execution with JUnit 5 are still in the experimental phase.

Putting Together a Testing Team

As part of one of my consulting efforts, I worked with a mid-sized company that was looking to move toward a more agile manner of developing software. As with any shift in work style, there is some bewilderment and, for some, considerable anxiety. People are being challenged to leave their comfort zones and embrace a continuously changing, dynamic working environment. And, dare I say it, testing may be the most ‘disturbed’ of the software roles in agile development.

Do you possess the necessary characteristics to adopt an Agile testing mindset?

To understand the agile testing mindset, we first need to determine what makes a team “agile.” To me, an agile team continually focuses on becoming self-organized and cross-functional to be able to complete any challenge they may face during a project.

Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.