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How to use finishHandle method in Playwright Internal

Best JavaScript code snippet using playwright-internal

My.FileSystem.js

Source:My.FileSystem.js

...231                232                finished++;233                uploadNext();234                235                finishHandle( nStarted );236                if ( finished == amount )237                {238                    handle();239                    setTimeout( dispose, 0 );240                }241                242                function remove()243                {244                    iframeArea.removeChild( iframe );245                    formArea.removeChild( form );246                }247            }248        }249        
...

camera-go-target.js

Source:camera-go-target.js

...42                this.cameraController.canControl = this._orignalCanControl;43                this.cameraController.dispatchChange();44                setTimeout(()=>{45                    if(this._finishHandle){46                        this._finishHandle();47                    }48                },1)49            }else{50                this._time += delta;5152                let interpolation = this._isForward?this._time/this.duration:1-(this._time/this.duration);53                interpolation = THREE.Math.clamp(interpolation,0,1);54                let hasChange = false;55                let cameraTarget = this.cameraController.cameraTarget;56                if(this._targetPosition){57                    if(!this._targetPosition.equals(this._orignalPosition)){58                        cameraTarget.position.lerpVectors(59                            this._orignalPosition,this._targetPosition,interpolation60                        );61                        hasChange = true;62                    }63                }64                if(this._targetQuaternion){65                    if(!this._targetQuaternion.equals(this._orignalQuaternion)){66                        THREE.Quaternion.slerp(67                            this._orignalQuaternion,this._targetQuaternion,68                            cameraTarget.quaternion,interpolation69                        );70                        hasChange = true;71                    }72                }73                if(this.cameraController.camera.isPerspectiveCamera && TypesCheck.isNumber(this._targetDistance)){74                    if(this._targetDistance!==this._orignalDistance){75                        this.cameraController.distance = THREE.Math.lerp(76                            this._orignalDistance,this._targetDistance,interpolation77                        );78                        hasChange = true;79                    }80                }81                if(this.cameraController.camera.isOrthographicCamera && TypesCheck.isNumber(this._targetSize)){82                    if(this._targetSize!==this._orignalSize){83                        this.cameraController.size = THREE.Math.lerp(84                            this._orignalSize,this._targetSize,interpolation85                        );86                        hasChange = true;87                    }88                }89                if(!hasChange){90                    this._coroutine.stop();91                    this.cameraController.canControl = this._orignalCanControl;92                    if(this._finishHandle){93                        this._finishHandle();94                    }95                }else{96                    this.cameraController.dispatchChange();97                }98            }99        });100    }101102    //----------------------------------------å¯¹å¤å±æ§åæ¹æ³----------------------------------------103    // æåæºæ§å¶104    get cameraController(){105        return this._cameraController;106    }107
...

yyloader.js

Source:yyloader.js

...162            }163            throw new Error(errMsg)164          }165          if (fn.checkModuleReady(ref)) {166            finishHandle(tpl)167          } else {168            fn.addWaiting(name, ref, function () {169              finishHandle(tpl)170            })171          }172        }173      )174    })175  }176  // æ¸ç©º loader ç¼å177  yyloader.clear = function () {178    if (!LOCAL_STORAGE_SPPORTED) {179      return180    }181    window.localStorage.setItem(LOCAL_STORAGE_NAME, '{}')182    localData = {}183  }...

QuizView.js

Source:QuizView.js

1import React from "react";2import Quiz from "../../pages/QuizPage/QuizPage";3import { QuizData } from "./QuizData";4import "./QuizView.css";5import Start from "./Start";6class Quizview extends React.Component {7  state = {8    userAnswer: null,9    currentIndex: 0,10    choices: [],11    quizEnd: false,12    score: 0,13    disabled: true,14    id: 0,15    quizLength: 0,16  };17  //Get index and start Quiz18  shuffleArray = () => {19    return QuizData.sort(() => Math.random() - 0.5);20  };21  loadQuiz = () => {22    const { currentIndex } = this.state; //get the current index23    this.setState(() => {24      this.shuffleArray();25      return {26        question: QuizData[currentIndex].question,27        choices: QuizData[currentIndex].choices,28        answer: QuizData[currentIndex].answer,29      };30    });31  };32  //Pass to the next question - pass to next index33  nextQuestionHandle = () => {34    const { userAnswer, answer, score } = this.state;35    const random = Math.floor(Math.random() * QuizData.length);36    this.setState({37      currentIndex: this.state.currentIndex + 1,38      quizLength: this.state.quizLength + 1,39    });40    console.log(this.state.quizLength);41    //Check for correct answer and increment score42    if (userAnswer === answer) {43      this.setState({44        score: score + 1,45      });46    }47  };48  componentDidMount() {49    this.loadQuiz();50  }51  //Updating component52  componentDidUpdate(prevProps, prevState) {53    const { currentIndex } = this.state;54    if (this.state.currentIndex !== prevState.currentIndex) {55      this.setState(() => {56        return {57          disabled: true,58          question: QuizData[currentIndex].question,59          choices: QuizData[currentIndex].choices,60          answer: QuizData[currentIndex].answer,61        };62      });63    }64  }65  //Confirm answers66  checkAnswer = (answer) => {67    this.setState({68      userAnswer: answer,69    });70  };71  //Finish quiz when questions finished72  finishHandle = () => {73    if (this.state.quizLength === 10) {74      this.setState({75        quizEnd: true,76      });77    }78  };79  restartQuiz = () => {80    window.location.Reload();81  };82  render() {83    //End screen84    if (this.state.quizEnd) {85      return (86        <div className="box">87          <div className="quiz-container">88            <p>Final score: {this.state.score} out of 10</p>89            <p>Correct answers:</p>90            <ul>91              {QuizData.slice(0, 10).map((item) => (92                <li className="choices">93                  {item.question} {item.answer}94                </li>95              ))}96            </ul>97            {/* Restart Quiz */}98            <div>99              <button100                className="next-btn"101                onClick={() => window.location.reload()}102              >103                Restart104              </button>105              {/* {this.state.show ? <Start /> : null} */}106            </div>107          </div>108        </div>109      );110    }111    return (112      //Quiz view113      <div className="box">114        <div className="quiz-container">115          <h1>{this.state.question}</h1>116          {this.state.choices.map((choice) => (117            <button118              key={choice.id}119              className={`options120                ${this.userAnswer === choice ? "selected" : null}121                `}122              onClick={() => this.checkAnswer(choice)}123            >124              {choice}125            </button>126          ))}127          {this.state.currentIndex < 10 && (128            <div className="next-btn-container">129              <button className="next-btn" onClick={this.nextQuestionHandle}>130                Next131              </button>132            </div>133          )}134          {/* Shows answers */}135          {this.state.quizLength === 10 && (136            <div className="next-btn-container">137              <button className="finish-btn" onClick={this.finishHandle}>138                Finish139              </button>140            </div>141          )}142        </div>143      </div>144    );145  }146}...

connect.js

Source:connect.js

1import {2  actDeleteShift,3  actError,4  actInitFine,5  actInitShift,6  actInsertShift,7  actPending,8  actUpdateFine,9  actUpdateShift,10} from "./actions/actions";11import { getCookie } from "../../action/Login";12const API_SERVER = "https://wedding-management.herokuapp.com/api/";13const POLICY_API = "fines";14const SHIFT_API = "shift";15export function CallAPI(endpoint, method = "GET", body) {16  const token = getCookie("token");17  const config = {18    method: method,19    headers: {20      "Content-Type": "application/json",21      Authorization: `Bearer ${token}`,22    },23  };24  if (body) {25    config.body = JSON.stringify(body);26  }27  const URL = API_SERVER + endpoint;28  return fetch(URL, config);29}30export function GetPolicy(FinishHandle) {31  return (dispatch) => {32    dispatch(actPending());33    CallAPI(POLICY_API, "GET")34      .then((res) => {35        if (!res.ok) throw new Error(res.status + "\t" + res.statusText);36        return res.json();37      })38      .then((data) => {39        dispatch(actInitFine(data));40      })41      .catch((err) => {42        dispatch(actError("Láº¥y thÃ´ng tin Qui Äá»nh khÃ´ng thÃ nh cÃ´ng"));43      });44  };45}46export function UpdatePolicy(policy, FinishHandle) {47  return (dispatch) => {48    dispatch(actPending());49    CallAPI(POLICY_API, "PUT", policy)50      .then((res) => {51        if (!res.ok) throw new Error(res.status + res.statusText);52        else return res.json();53      })54      .then((data) => {55        dispatch(actUpdateFine(policy));56      })57      .catch((err) => {58        console.log(err);59        dispatch(actError("Cáºp nháºt thÃ´ng tin Qui Äá»nh khÃ´ng thÃ nh cÃ´ng"));60      });61  };62}63export function GetShift(FinishHandle) {64  return (dispatch) => {65    dispatch(actPending());66    CallAPI(SHIFT_API, "GET")67      .then((res) => {68        if (!res.ok) throw new Error(res.status + "\t" + res.statusText);69        return res.json();70      })71      .then((data) => {72        dispatch(actInitShift(data));73      })74      .catch((err) => {75        dispatch(actError("Láº¥y thÃ´ng tin ca khÃ´ng thÃ nh cÃ´ng"));76      });77  };78}79export function UpdateShift(shift, FinishHandle) {80  return (dispatch) => {81    dispatch(actPending());82    // const data = {83    //     active: true,84    //     id:shift.id,85    //     name:shift.name,86    //     timeBegin:shift.timeBegin,87    //     timeEnd:shift.timeEnd,88    // }89    CallAPI(SHIFT_API, "PUT", shift)90      .then((res) => {91        if (!res.ok) throw new Error(res.status + res.statusText);92        else return res.json();93      })94      .then((data) => {95        FinishHandle();96        dispatch(actUpdateShift(shift));97      })98      .catch((err) => {99        console.log(err);100        dispatch(actError("Cáºp nháºt thÃ´ng tin ca khÃ´ng thÃ nh cÃ´ng"));101      });102  };103}104export function InsertShift(shift, FinishHandle) {105  return (dispatch) => {106    dispatch(actPending());107    CallAPI(SHIFT_API, "POST", shift)108      .then((res) => {109        if (!res.ok) throw new Error(res.status + res.statusText);110        else return res.json();111      })112      .then((data) => {113        FinishHandle();114        dispatch(actInsertShift(data));115      })116      .catch((err) => {117        console.log(err);118        dispatch(actError("ThÃªm thÃ´ng tin ca khÃ´ng thÃ nh cÃ´ng"));119      });120  };121}122export function DeleteShift(shift, FinishHandle) {123  return (dispatch) => {124    dispatch(actPending());125    CallAPI(SHIFT_API + "/" + shift.id, "DELETE")126      .then((res) => {127        if (!res.ok) throw new Error(res.status + res.statusText);128        else dispatch(actDeleteShift(shift));129      })130      .catch((err) => {131        console.log(err);132        dispatch(actError("XoÃ¡ thÃ´ng tin ca khÃ´ng thÃ nh cÃ´ng"));133      });134  };...

ToBody.js

Source:ToBody.js

1import React, { Component } from 'react'2import './ToBody.css'34export default class ToBody extends Component {5    constructor(props) {6        super(props)7        this.state = {8            finishList: []9        }10    }11    finishHandle = (e) => {12        const { tagName, value, checked } = e.target13        if (tagName !== 'INPUT') {14            return15        }16        this.props.updateList(value, checked)17    }18    render() {19        return (20            <div className="container">21                <p>æ£å¨è¿è¡ï¼</p>22                <ul className="list-group" onClick={this.finishHandle}>23                    {this.props.list.map((item, index) => {24                        if (!item.finished) {25                            return (26                                <li key={index}>27                                    <input className="toggle" type="checkbox" value={item.val} defaultChecked={item.finished}></input>28                                    <span>{item.val}</span>29                                    <button>å é¤</button>30                                </li>)31                        }32                        return false33                    })}34                </ul>35                <p>å·²ç»å®æï¼</p>36                <ul className="list-group" onClick={this.finishHandle}>37                    {this.props.list.map((item, index) => {38                        if (item.finished) {39                            return (40                                <li key={index}>41                                    <input className="toggle" type="checkbox" value={item.val} defaultChecked={item.finished}></input>42                                    <span>{item.val}</span>43                                    <button>å é¤</button>44                                </li>)45                        }46                        return false47                    })}48                </ul>49            </div>50        )51    }
...

ArrowSelectItemType.js

Source: ArrowSelectItemType.js

1import { Radio } from "antd-mobile";2import TouchFeedback from "rmc-feedback";3import "../../../styles/report/ArrowSelectItemType.module.less";4import Modal from "react-modal";5const ArrowSelectItemType = ({6  isOpen,7  closeHandle,8  finishHandle,9  title,10  data,11  typeValue,12  onChangeTypeValue,13}) => {14  const items = data.map((item) => {15    const checked = typeValue16      ? typeValue.value === item.value17        ? true18        : false19      : false;20    return (21      <div22        className="radioItem"23        key={item.value}24        onClick={() => onChangeTypeValue(item)}25      >26        <span className="radioItemTitle">{item.label}</span>27        <Radio checked={checked}></Radio>28      </div>29    );30  });31  return (32    <Modal33      isOpen={isOpen}34      onRequestClose={closeHandle}35      className="modal"36      ariaHideApp={false}37      overlayClassName="overlay"38    >39      <div className="container">40        <div className="title">{title}</div>41        {items}42        <TouchFeedback>43          <a className="okButton" onClick={finishHandle}>44            <span className="okButtonTitle">ç¡®å®</span>45          </a>46        </TouchFeedback>47      </div>48    </Modal>49  );50};...

index.js

Source:index.js

1import { useDispatch, useSelector } from 'react-redux'2import { useHistory } from 'react-router'3import './style.css'4export default function PayCheck(props) {5    const cartList = useSelector(state => state.cart)6    const history = useHistory()7    const dispatch = useDispatch()8    let sum = 0.009    sum = cartList.reduce((acc, obj) => {return acc + obj.price}, 0 )10    const handleClick = () => {11        history.push('/checkout'); dispatch({type: "CLOSE-CART"})12    }13    const finishHandle = (e) => {14        e.preventDefault()15        cartList.length > 0 ? dispatch({type: 'MODAL-SUCCESS'}) : dispatch({type: 'MODAL-FAILED'})16    }17    return (18        <div className={`container-paycheck ${props.type}`}>19            <span>Total: </span> <span>R$ {sum}</span>20            {21                props.type === 'checkout-paycheck' ?22                <button onClick={finishHandle}>Finalizar</button> :23                <button onClick={handleClick}>Finalizar compra</button>24            }25            26        </div>27    )...

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const context = await browser.newContext();5  const page = await context.newPage();6  const handle = await page.$('text=Get started');7  await handle.finishHandle();8  await browser.close();9})();10const { chromium } = require('playwright');11(async () => {12  const browser = await chromium.launch();13  const context = await browser.newContext();14  const page = await context.newPage();15  const handle = await page.$('text=Get started');16  await handle.finishHandle();17  await browser.close();18})();19const { chromium } = require('playwright');20(async () => {21  const browser = await chromium.launch();22  const context = await browser.newContext();23  const page = await context.newPage();24  const handle = await page.$('text=Get started');25  await handle.finishHandle();26  await browser.close();27})();28const { chromium } = require('playwright');29(async () => {30  const browser = await chromium.launch();31  const context = await browser.newContext();32  const page = await context.newPage();33  const handle = await page.$('text=Get started');34  await handle.finishHandle();35  await browser.close();36})();37const { chromium } = require('playwright');38(async () => {39  const browser = await chromium.launch();40  const context = await browser.newContext();41  const page = await context.newPage();42  const handle = await page.$('text=Get started');43  await handle.finishHandle();44  await browser.close();45})();46const { chromium } = require('playwright');47(async () => {48  const browser = await chromium.launch();

Using AI Code Generation

1const playwright = require('playwright');2(async () => {3  const browser = await playwright.chromium.launch();4  const context = await browser.newContext();5  const page = await context.newPage();6  const handle = await page.evaluateHandle(() => document.body);7  await handle.evaluate(body => body.style.backgroundColor = 'red');8  await handle.finishHandle();9  await browser.close();10})();11const playwright = require('playwright');12(async () => {13  const browser = await playwright.chromium.launch();14  const context = await browser.newContext();15  const page = await context.newPage();16  const handle = await page.evaluateHandle(() => document.body);17  await handle.evaluate(body => body.style.backgroundColor = 'red');18  await handle.finishHandle();19  await browser.close();20})();21const playwright = require('playwright');22(async () => {23  const browser = await playwright.chromium.launch();24  const context = await browser.newContext();25  const page = await context.newPage();26  const handle = await page.evaluateHandle(() => document.body);27  await handle.evaluate(body => body.style.backgroundColor = 'red');28  await handle.finishHandle();29  await browser.close();30})();31const playwright = require('playwright');32(async () => {33  const browser = await playwright.chromium.launch();34  const context = await browser.newContext();35  const page = await context.newPage();36  const handle = await page.evaluateHandle(() => document.body);37  await handle.evaluate(body => body.style.backgroundColor = 'red');38  await handle.finishHandle();39  await browser.close();40})();41const playwright = require('playwright');42(async () => {43  const browser = await playwright.chromium.launch();44  const context = await browser.newContext();45  const page = await context.newPage();46  const handle = await page.evaluateHandle(() => document.body);47  await handle.evaluate(body =>

Using AI Code Generation

1const playwright = require('playwright');2(async () => {3  const browser = await playwright.chromium.launch({ headless: false });4  const context = await browser.newContext();5  const page = await context.newPage();6  const handle = await page.evaluateHandle(() => document.body);7  console.log(handle);8  await browser.close();9})();10JSHandle {11  _channel: ChannelOwner {12    _connection: Connection { _events: [Object], _callbacks: [Object] },13    _initializer: {14    },15    _guidToChannel: Map(0) {},16    _callbacks: Map(0) {},17    _events: Map(0) {},18  },19  _context: BrowserContext {20    _channel: ChannelOwner {21    },22    _options: { viewport: [Object], ignoreHTTPSErrors: false },

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  await page.screenshot({ path: 'example.png' });6  await browser.close();7})();8const { chromium } = require('playwright');9(async () => {10  const browser = await chromium.launch();11  const page = await browser.newPage();12  await page.screenshot({ path: 'example.png' });13  await browser.close();14})();15const { chromium } = require('playwright');16(async () => {17  const browser = await chromium.launch();18  const page = await browser.newPage();19  await page.screenshot({ path: 'example.png' });20  await browser.close();21})();22const { chromium } = require('playwright');23(async () => {24  const browser = await chromium.launch();25  const page = await browser.newPage();26  await page.screenshot({ path: 'example.png' });27  await browser.close();28})();29const { chromium } = require('playwright');30(async () => {31  const browser = await chromium.launch();32  const page = await browser.newPage();33  await page.screenshot({ path: 'example.png' });34  await browser.close();35})();36const { chromium } = require('playwright');37(async () => {38  const browser = await chromium.launch();39  const page = await browser.newPage();40  await page.screenshot({ path: 'example.png' });41  await browser.close();42})();43const { chromium } = require('playwright');44(async () => {45  const browser = await chromium.launch();46  const page = await browser.newPage();47  await page.screenshot({ path: 'example.png

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch({ headless: false });4  const page = await browser.newPage();5  await page.screenshot({ path: 'test.png' });6  await browser.close();7})();

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  const handle = await page.$('text=Get started');6  await handle.finishHandle();7  await browser.close();8})();9    at async Page.finishHandle (/home/sourabh/playwright/node_modules/playwright/lib/cjs/pw-runner.js:1:11696)10    at async Object.<anonymous> (/home/sourabh/playwright/test.js:10:5)

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const context = await browser.newContext();5  const page = await context.newPage();6  await page._client.send('Playwright.enable');7  const pageHandle = await page._client.send('Playwright.pageHandle');8  const frameHandle = await page._client.send('Playwright.frameHandle', {9    frameId: page.mainFrame()._id,10  });11  const contextHandle = await page._client.send('Playwright.executionContext', {12  });13  const result = await page._client.send('Playwright.evaluate', {14  });15  console.log(result);16  await page._client.send('Playwright.dispose', { handle: pageHandle });17  await browser.close();18})();19const { chromium } = require('playwright');20(async () => {21  const browser = await chromium.launch();22  const context = await browser.newContext();23  const page = await context.newPage();24  await page._client.send('Playwright.enable');25  const pageHandle = await page._client.send('Playwright.pageHandle');26  const frameHandle = await page._client.send('Playwright.frameHandle', {27    frameId: page.mainFrame()._id,28  });29  const contextHandle = await page._client.send('Playwright.executionContext', {30  });31  const result = await page._client.send('Playwright.evaluate', {32  });

Using AI Code Generation

1import { test as base } from '@playwright/test';2import { finishHandle } from '@playwright/test/lib/test';3export const test = base.extend({4    async finishHandle({}, run) {5        await run();6        await finishHandle();7    },8});9import { test, expect } from './test';10test('login', async ({ page, finishHandle }) => {11    await page.click('text=Get Started');12    await page.click('text=Docs');13    await page.click('text=API');14    await page.click('text=Test');15    await page.click('text=Test.fixtures');16    await page.click('text=Test.extend');17    await page.click('text=Test.extend');

StackOverFlow community discussions

Questions

Discussion

Running Playwright in Azure Function

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

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firefox browser does not start in playwright

I played with your example for a while and I got the same errors. These are the things I found that made my example work:

It must be Linux. I know that you mentioned that you picked a Linux plan. But I found that in VS Code that part is hidden, and on the Web the default is Windows. This is important because only the Linux plan runs npm install on the server.

Make sure that you are building on the server. You can find this option in the VS Code Settings:

Make sure you set the environment variable PLAYWRIGHT_BROWSERS_PATH, before making the publish.

https://stackoverflow.com/questions/63949978/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

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

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

Blogs

Check out the latest blogs from LambdaTest on this topic:

Top 22 Selenium Automation Testing Blogs To Look Out In 2020

If you are a web tester then somewhere down the road you will have to come across Selenium, an open-source test automation framework that has been on boom ever since its launch in 2004.

Using ChatGPT for Test Automation

ChatGPT broke all Internet records by going viral in the first week of its launch. A million users in 5 days are unprecedented. A conversational AI that can answer natural language-based questions and create poems, write movie scripts, write social media posts, write descriptive essays, and do tons of amazing things. Our first thought when we got access to the platform was how to use this amazing platform to make the lives of web and mobile app testers easier. And most importantly, how we can use ChatGPT for automated testing.

Getting Started with SpecFlow Actions [SpecFlow Automation Tutorial]

With the rise of Agile, teams have been trying to minimize the gap between the stakeholders and the development team.

Appium Testing Tutorial For Mobile Applications

The count of mobile users is on a steep rise. According to the research, by 2025, it is expected to reach 7.49 billion users worldwide. 70% of all US digital media time comes from mobile apps, and to your surprise, the average smartphone owner uses ten apps per day and 30 apps each month.

Why Agile Teams Have to Understand How to Analyze and Make adjustments

How do we acquire knowledge? This is one of the seemingly basic but critical questions you and your team members must ask and consider. We are experts; therefore, we understand why we study and what we should learn. However, many of us do not give enough thought to how we learn.

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.