TestMu 2025 - The Largest Virtual Software Testing Conference is Back | 50,000+ Attendees

How to use handlePropertyChange method in Playwright Internal

Best JavaScript code snippet using playwright-internal

User.js

...62              <TextField 63                className={classes.flexTextfield}64                label={t("First name")}65                value={givenname || ''}66                onChange={handlePropertyChange('givenname')}67              />68              <TextField 69                //className={classes.flexTextfield}70                label={t("Initials")}71                value={initials || ''}72                onChange={handlePropertyChange('initials')}73              />74            </div>75            <TextField 76              className={classes.propertyInput} 77              label={t("Surname")} 78              fullWidth 79              value={surname || ''}80              onChange={handlePropertyChange('surname')}81            />82          </Grid>83          <Grid item xs={12} className={classes.gridItem}>84            <TextField 85              className={classes.propertyInput}86              label={t("Display name")}87              fullWidth88              value={displayname || ''}89              onChange={handlePropertyChange('displayname')}90            />91            <TextField 92              className={classes.propertyInput} 93              label={t("Nickname")} 94              fullWidth 95              value={nickname || ''}96              onChange={handlePropertyChange('nickname')}97            />98          </Grid>99        </Grid>100        <Divider className={classes.divider} />101        <Grid container>102          <Grid item xs={6} style={{ display: 'flex' }}>103            <TextField 104              className={classes.address}105              label={t("Address")}106              value={streetaddress || ''}107              onChange={handlePropertyChange('streetaddress')}108              multiline109              rows={3}110              inputProps={{111                style: {112                  height: 95,113                },114              }}115            />116          </Grid>117          <Grid item xs={6} style={{ paddingRight: 16 }}>118            <TextField 119              className={classes.input}120              label={t("Position")}121              fullWidth122              value={title || ''}123              onChange={handlePropertyChange('title')}124            />125            <TextField 126              className={classes.input}127              label={t("Company")}128              fullWidth129              value={companyname || ''}130              onChange={handlePropertyChange('companyname')}131            />132          </Grid>133        </Grid>134        <Grid container>135          <Grid item xs={12} className={classes.gridItem}>136            <TextField 137              className={classes.propertyInput}138              label={t("Locality")}139              fullWidth140              value={locality || ''}141              onChange={handlePropertyChange('locality')}142            />143            <TextField 144              className={classes.propertyInput}145              label={t("Department")}146              fullWidth147              value={departmentname || ''}148              onChange={handlePropertyChange('departmentname')}149            />150          </Grid>151          <Grid item xs={12} className={classes.gridItem}>152            <TextField 153              className={classes.propertyInput}154              label={t("State")}155              fullWidth156              value={stateorprovince || ''}157              onChange={handlePropertyChange('stateorprovince')}158            />159            <TextField 160              className={classes.propertyInput}161              label={t("Office")}162              fullWidth163              value={officelocation || ''}164              onChange={handlePropertyChange('officelocation')}165            />166          </Grid>167          <Grid item xs={12} className={classes.gridItem}>168            <TextField 169              className={classes.propertyInput}170              label={t("Postal Code")}171              fullWidth172              value={postalcode || ''}173              onChange={handlePropertyChange('postalcode')}174            />175            <TextField 176              className={classes.propertyInput}177              label={t("Assistant")}178              fullWidth179              value={assistant || ''}180              onChange={handlePropertyChange('assistant')}181            />182          </Grid>183          <Grid item xs={12} className={classes.gridItem}>184            <FormControl className={classes.countrySelect}>185              <InputLabel variant="standard">{t("Country")}</InputLabel>186              <NativeSelect187                value={country || "Germany"}188                onChange={handlePropertyChange('country')}189                fullWidth190              >191                {world.map(country =>192                  <option key={country.id} value={country.name}>193                    {country.name}194                  </option>  195                )}196              </NativeSelect>197            </FormControl>198            <TextField 199              className={classes.propertyInput} 200              label={t("Telephone")} 201              fullWidth 202              value={primarytelephonenumber || ''}203              onChange={handlePropertyChange('primarytelephonenumber')}204            />205          </Grid>206        </Grid>207      </FormControl>208    );209  }210}211User.propTypes = {212  classes: PropTypes.object.isRequired,213  user: PropTypes.object.isRequired,214  t: PropTypes.func.isRequired,215  handlePropertyChange: PropTypes.func.isRequired,216};217export default withTranslation()(withStyles(styles)(User));

BookForm.js

Source: BookForm.js

...22        return authors.map(function (author) {23            return (<option value={author._links.self.href} key={author.id}>{author.fullName}</option>)24        })25    }26    handlePropertyChange(e) {27        console.log('handlePropertyChange->', e.target)28        const target = e.target29        const value = target.value30        const name = target.name31        this.props.updateNewOrExistingBookProperty(name, value)32    }33    handleSubmit(e) {34        e.preventDefault()35        this.props.submitBookWithValidation(this.props.bookToAddOrEdit)36    }37    render() {38        return (39            <div className="container">40                <div className="row">...

CreateCourse.js

Source: CreateCourse.js

...31            estimatedTime,32            materialsNeeded33        }, { username, password });34    }35    handlePropertyChange({ target }) {36        if (Object.keys(this.state).includes(target.name))37            this.setState({ [target.name]:target.value });38    }39    render() {40        return (41            <div className="bounds course--detail">42                <h1>Create Course</h1>43                <div>44                    <ErrorView errors={this.state.errors}/>45                    <form onSubmit={this.didSubmitForm}>46                        <div className="grid-66">47                            <div className="course--header">48                                <h4 className="course--label">Course</h4>49                                <div>...

ContainerEdit.js

Source: ContainerEdit.js

...8import Docker from './Docker';9let MyFormInput = ({prop, propName, label, placeholder, handlePropertyChange}) => (10  <FormGroup controlId={'container-' + propName} validationState={prop.validationState}>11    <ControlLabel>{label}</ControlLabel>12    <FormControl type="text" placeholder={placeholder} value={prop} onChange={(event) => handlePropertyChange(propName, event)}/>13    <FormControl.Feedback/>14    {prop.validations.map(validation => <HelpBlock key={validation.message}>{validation.message}</HelpBlock>)}15  </FormGroup>16);17let ContainerEdit = connect(18  (state, ownProps) => {19    return {20      docker: state.hosts[ownProps.params.host]21    };22  }23)(React.createClass({24  mixins: [AlertMixin, PropertyChangeMixin],25  getInitialState: function() {26    return {...

vector_style_editor.js

Source: vector_style_editor.js

1/*2 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one3 * or more contributor license agreements. Licensed under the Elastic License;4 * you may not use this file except in compliance with the Elastic License.5 */6import _ from 'lodash';7import React, { Component, Fragment } from 'react';8import { VectorStyleColorEditor } from './color/vector_style_color_editor';9import { VectorStyleSizeEditor } from './size/vector_style_size_editor';10import { getDefaultDynamicProperties, getDefaultStaticProperties } from '../../vector_style_defaults';11import { EuiSpacer } from '@elastic/eui';12import { i18n } from '@kbn/i18n';13export class VectorStyleEditor extends Component {14  constructor(props) {15    super(props);16    this.state = {17      ordinalFields: [],18      defaultDynamicProperties: getDefaultDynamicProperties(),19      defaultStaticProperties: getDefaultStaticProperties()20    };21  }22  componentWillUnmount() {23    this._isMounted = false;24  }25  componentDidMount() {26    this._isMounted = true;27    this._loadOrdinalFields();28  }29  componentDidUpdate() {30    this._loadOrdinalFields();31  }32  async _loadOrdinalFields() {33    const ordinalFields = await this.props.layer.getOrdinalFields();34    if (!this._isMounted) {35      return;36    }37    if (!_.isEqual(ordinalFields, this.state.ordinalFields)) {38      this.setState({ ordinalFields });39    }40  }41  render() {42    return (43      <Fragment>44        <VectorStyleColorEditor45          styleProperty="fillColor"46          stylePropertyName={47            i18n.translate('xpack.maps.styles.vector.fillColorLabel', {48              defaultMessage: 'Fill color'49            })50          }51          handlePropertyChange={this.props.handlePropertyChange}52          styleDescriptor={this.props.styleProperties.fillColor}53          ordinalFields={this.state.ordinalFields}54          defaultStaticStyleOptions={this.state.defaultStaticProperties.fillColor.options}55          defaultDynamicStyleOptions={this.state.defaultDynamicProperties.fillColor.options}56        />57        <EuiSpacer size="m" />58        <VectorStyleColorEditor59          styleProperty="lineColor"60          stylePropertyName={61            i18n.translate('xpack.maps.styles.vector.borderColorLabel', {62              defaultMessage: 'Border color'63            })64          }65          handlePropertyChange={this.props.handlePropertyChange}66          styleDescriptor={this.props.styleProperties.lineColor}67          ordinalFields={this.state.ordinalFields}68          defaultStaticStyleOptions={this.state.defaultStaticProperties.lineColor.options}69          defaultDynamicStyleOptions={this.state.defaultDynamicProperties.lineColor.options}70        />71        <EuiSpacer size="m" />72        <VectorStyleSizeEditor73          styleProperty="lineWidth"74          stylePropertyName={75            i18n.translate('xpack.maps.styles.vector.borderWidthLabel', {76              defaultMessage: 'Border width'77            })78          }79          handlePropertyChange={this.props.handlePropertyChange}80          styleDescriptor={this.props.styleProperties.lineWidth}81          ordinalFields={this.state.ordinalFields}82          defaultStaticStyleOptions={this.state.defaultStaticProperties.lineWidth.options}83          defaultDynamicStyleOptions={this.state.defaultDynamicProperties.lineWidth.options}84        />85        <EuiSpacer size="m" />86        <VectorStyleSizeEditor87          styleProperty="iconSize"88          stylePropertyName={89            i18n.translate('xpack.maps.styles.vector.symbolSizeLabel', {90              defaultMessage: 'Symbol size'91            })92          }93          handlePropertyChange={this.props.handlePropertyChange}94          styleDescriptor={this.props.styleProperties.iconSize}95          ordinalFields={this.state.ordinalFields}96          defaultStaticStyleOptions={this.state.defaultStaticProperties.iconSize.options}97          defaultDynamicStyleOptions={this.state.defaultDynamicProperties.iconSize.options}98        />99      </Fragment>100    );101  }...

PropertyForm.js

Source: PropertyForm.js

1import React from 'react';2import { FormControl, InputGroup, Row, Col } from 'react-bootstrap';3export class PropertyForm extends React.Component {4    constructor(props) {5        super(props);6        this.handleChanges = props.handleChanges;7        this.state = {8            property: props.property9        };10    }11    handlePropertyChange = event => {12        let value = event.target.value;13        const column = event.target.name;14        this.setState(prevState => {15            let property = Object.assign(Object.create(Object.getPrototypeOf(prevState.property)), prevState.property);16            if (value && ["rent", "charges"].includes(column)) {17                value = parseFloat(value);18            }19            property[column] = value;20            this.handleChanges(property);21        });22    }23    componentDidUpdate(prevProps, prevState) {24        if ((this.props.property !== this.state.property) || (prevState.property !== this.state.property)) {25            this.setState((state, props) => {26                return { property: props.property };27            });28        }29    }30    render() {31        return (32            <>33                <Row>34                    <Col>35                        <InputGroup>36                            <InputGroup.Prepend>37                                <InputGroup.Text id="PropertiesAdminName">Nom du bien :</InputGroup.Text>38                            </InputGroup.Prepend>39                            <FormControl placeholder="Nom du bien" name="name" type="text" value={this.state.property.name}40                                aria-label="Nom du bien" aria-describedby="PropertiesAdminName" onChange={this.handlePropertyChange}41                            />42                        </InputGroup>43                    </Col>44                    <Col>45                        <InputGroup>46                            <InputGroup.Prepend>47                                <InputGroup.Text id="PropertiesAdminAdresse">Addresse du bien :</InputGroup.Text>48                            </InputGroup.Prepend>49                            <textarea className="form-control textarea-autosize" name="adress" id="adresse" value={this.state.property.adress} onChange={this.handlePropertyChange}50                                aria-label="Addresse du bien" aria-describedby="PropertiesAdminAdresse" />51                        </InputGroup>52                    </Col>53                </Row>54                <Row>55                    <Col>56                        <InputGroup>57                            <InputGroup.Prepend>58                                <InputGroup.Text id="PropertiesAdminRent">Loyer :</InputGroup.Text>59                            </InputGroup.Prepend>60                            <FormControl placeholder="Loyer" type="number" name="rent" value={this.state.property.rent}61                                aria-label="Loyer" aria-describedby="PropertiesAdminRent" onChange={this.handlePropertyChange}62                            />63                        </InputGroup>64                    </Col>65                    <Col>66                        <InputGroup>67                            <InputGroup.Prepend>68                                <InputGroup.Text id="PropertiesAdminCharges">Charges :</InputGroup.Text>69                            </InputGroup.Prepend>70                            <FormControl placeholder="Charges" type="number" name="charges" value={this.state.property.charges}71                                aria-label="Charges" aria-describedby="PropertiesAdminCharges" onChange={this.handlePropertyChange}72                            />73                        </InputGroup>74                    </Col>75                </Row>76            </>77        );78    }...

UserSignUp.js

Source: UserSignUp.js

...45     * @desc Handles state updates for input value changes46     * @param {HTMLElement} target Changing input element47     * @note Assumes the state key is the input's `name` attribute48     */49    handlePropertyChange({ target }) {50        if (Object.keys(this.state).includes(target.name))51            this.setState({ [target.name]:target.value });52    }53    render() {54        return (55            <div className="bounds">56                <div className="grid-33 centered signin">57                    <h1>Sign Up</h1>58                    <div>59                        <form onSubmit={this.didSubmitForm}>60                            <div>61                                <input id="firstName" name="firstName" type="text" placeholder="First Name" onChange={this.handlePropertyChange}/>62                            </div>63                            <div>...

ChartFactory.js

Source: ChartFactory.js

1import React from 'react';2import {ChartTypes} from "./enums/ChartTypes";3import BarChart from "./conceretecharts/BarChart";4import ColumnChart from "./conceretecharts/ColumnChart";5import LineChart from "./conceretecharts/LineChart";6import PieChart from "./conceretecharts/PieChart";7import BaseChart from "./conceretecharts/BaseChart";8export default class ChartFactory {9    chartMap = new Map();10    constructor() {11        this.chartMap.set(ChartTypes.BAR.string, <BarChart />);12        this.chartMap.set(ChartTypes.COLUMN.string, <ColumnChart />);13        this.chartMap.set("default", <BaseChart />);14        this.chartMap.set(ChartTypes.LINE.string, <LineChart />);15        this.chartMap.set(ChartTypes.PIE.string, <PieChart />);16        // this.chartMap.set(ChartTypes.Table, new Table());17    }18    getChartsRow1 = (chartOptions, handleChartChange, handlePropertyChange) => {19        // console.log('chartOptionssssssssssssssssssssss', chartOptions)20        // return <BaseChart chartOptions={chartOptions} handleChartChange={handleChartChange}21        //                   handlePropertyChange={handlePropertyChange} />22        return React.cloneElement(this.chartMap.get("default"), {23            chartOptions,24            handleChartChange,25            handlePropertyChange26        });27    }28    getChartsRow2 = (chartOptions, handleChartChange, handlePropertyChange) => {29        return React.cloneElement(this.chartMap.get("default"), {30            chartOptions,31            handleChartChange,32            handlePropertyChange33        });34    }...

Using AI Code Generation

1const {chromium} = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  const internalPage = page._delegate;6  await internalPage.handlePropertyChange('foo', 'bar');7  await browser.close();8})();9class Page {10  constructor(delegate, context) {11    this._delegate = delegate;12    this._context = context;13  }14}15class Page {16  private _delegate: InternalPage;17  private _context: BrowserContext;18  constructor(delegate: InternalPage, context: BrowserContext) {19    this._delegate = delegate;20    this._context = context;21  }22}23class Page {24  constructor(delegate, context) {25    this._delegate = delegate;26    this._context = context;27  }28}29class Page {30  constructor(delegate, context) {31    this._delegate = delegate;32    this._context = context;33  }34}35class Page {36  constructor(delegate, context) {37    this._delegate = delegate;38    this._context = context;39  }40}41class Page {42  constructor(delegate, context) {43    this._delegate = delegate;44    this._context = context;45  }46}47class Page {48  constructor(delegate, context) {49    this._delegate = delegate;50    this._context = context;51  }52}53class Page {54  constructor(delegate, context) {55    this._delegate = delegate;56    this._context = context;57  }58}59class Page {60  constructor(delegate, context) {61    this._delegate = delegate;62    this._context = context;63  }64}65class Page {66  constructor(delegate, context) {67    this._delegate = delegate;68    this._context = context;69  }70}71class Page {72  constructor(delegate, context) {73    this._delegate = delegate;74    this._context = context;75  }76}

Using AI Code Generation

1const { handlePropertyChange } = require('playwright/lib/server/supplements/recorder/recorderSupplement');2const { Page } = require('playwright/lib/server/page');3const { Frame } = require('playwright/lib/server/frames');4const { handlePropertyChange } = require('playwright/lib/server/supplements/recorder/recorderSupplement');5const { Page } = require('playwright/lib/server/page');6const { Frame } = require('playwright/lib/server/frames');7const { handlePropertyChange } = require('playwright/lib/server/supplements/recorder/recorderSupplement');8const { Page } = require('playwright/lib/server/page');9const { Frame } = require('playwright/lib/server/frames');10const { handlePropertyChange } = require('playwright/lib/server/supplements/recorder/recorderSupplement');11const { Page } = require('playwright/lib/server/page');12const { Frame } = require('playwright/lib/server/frames');13const { handlePropertyChange } = require('playwright/lib/server/supplements/recorder/recorderSupplement');14const { Page } = require('playwright/lib/server/page');15const { Frame } = require('playwright/lib/server/frames');16const { handlePropertyChange } = require('playwright/lib/server/supplements/recorder/recorderSupplement');17const { Page } = require('playwright/lib/server/page');18const { Frame } = require('playwright/lib/server/frames');19const { handlePropertyChange } = require('playwright/lib/server/supplements/recorder/recorderSupplement');20const { Page } = require('playwright/lib/server/page');21const { Frame } = require('playwright/lib/server/frames');22const { handlePropertyChange } = require('playwright/lib/server/supplements/recorder/recorderSupplement');23const { Page } = require('playwright/lib/server/page');24const { Frame } = require('playwright/lib/server/frames');

Using AI Code Generation

1const { Playwright } = require('playwright');2const { BrowserContext } = require('playwright/lib/server/browserContext');3const { Page } = require('playwright/lib/server/page');4const { parseCookie } = require('playwright/lib/utils/parseCookies');5const context = new BrowserContext();6const page = new Page(context);7const setCookie = async () => {8  const cookie = parseCookie('name=value; HttpOnly; Path=/; Domain=example.com; SameSite=Lax; Secure');9  await page.setCookie(cookie);10};11const handlePropertyChange = async () => {12  await setCookie();13  await page._delegate.handlePropertyChange('cookies');14};15handlePropertyChange();

Using AI Code Generation

1const { Page } = require('playwright/lib/server/page');2Page.prototype.handlePropertyChange = function(propertyName, value) {3  console.log(propertyName, value);4  return this._pageImpl.handlePropertyChange(propertyName, value);5};6const { chromium } = require('playwright');7(async () => {8  const browser = await chromium.launch();9  const context = await browser.newContext();10  const page = await context.newPage();11  await browser.close();12})();13viewportSize { width: 1280, height: 800 }14viewportSize { width: 1280, height: 800 }

Using AI Code Generation

1const { chromium } = require('playwright');2const { handlePropertyChange } = require('playwright/lib/internal/inspectorInstrumentation');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  const value = await handlePropertyChange(page, 'document', 'readyState', (document) => {8    return document.readyState;9  });10  console.log(value);11  await browser.close();12})();13const { chromium } = require('playwright');14const { getInternalApi } = require('playwright/lib/internal/inspectorInstrumentation');15(async () => {16  const browser = await chromium.launch();17  const context = await browser.newContext();18  const page = await context.newPage();19  const value = await getInternalApi(page).handlePropertyChange(page, 'document', 'readyState', (document) => {20    return document.readyState;21  });22  console.log(value);23  await browser.close();24})();

Using AI Code Generation

1const { Playwright } = require('playwright');2const { handlePropertyChange } = Playwright._internal;3const { Page } = Playwright._internal.api;4const { Playwright } = require('playwright');5const { handlePropertyChange } = Playwright._internal;6const { Page } = Playwright._internal.api;7const { Playwright } = require('playwright');8const { handlePropertyChange } = Playwright._internal;9const { Page } = Playwright._internal.api;10const { Playwright } = require('playwright');11const { handlePropertyChange } = Playwright._internal;12const { Page } = Playwright._internal.api;13const { Playwright } = require('playwright');14const { handlePropertyChange } = Playwright._internal;15const { Page } = Playwright._internal.api;16const { Playwright } = require('playwright');17const { handlePropertyChange } = Playwright._internal;18const { Page } = Playwright._internal.api;19const { Playwright } = require('playwright');20const { handlePropertyChange } = Playwright._internal;21const { Page } = Playwright._internal.api;22const { Playwright } = require('playwright');23const { handlePropertyChange } = Playwright._internal;24const { Page }

Using AI Code Generation

1const { handlePropertyChange } = require('playwright-core/lib/client/selectorEngine');2const { Page } = require('playwright-core/lib/client/page');3const { ElementHandle } = require('playwright-core/lib/client/elementHandle');4const { JSHandle } = require('playwright-core/lib/client/jsHandle');5const { CDPSession } = require('playwright-core/lib/client/cdpsession');6const page = new Page(new CDPSession(), null, null, null, null);7const handle = new ElementHandle(new JSHandle(page, null, null, null), null, null, null, null);8handlePropertyChange(handle, 'foo', 'bar');

StackOverFlow community discussions

Questions

Discussion

Running Playwright in Azure Function

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

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

firefox browser does not start in playwright

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

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

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

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

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:

Test strategy and how to communicate it

I routinely come across test strategy documents when working with customers. They are lengthy—100 pages or more—and packed with monotonous text that is routinely reused from one project to another. Yawn once more— the test halt and resume circumstances, the defect management procedure, entrance and exit criteria, unnecessary generic risks, and in fact, one often-used model replicates the requirements of textbook testing, from stress to systems integration.

Are Agile Self-Managing Teams Realistic with Layered Management?

Agile software development stems from a philosophy that being agile means creating and responding to change swiftly. Agile means having the ability to adapt and respond to change without dissolving into chaos. Being Agile involves teamwork built on diverse capabilities, skills, and talents. Team members include both the business and software development sides working together to produce working software that meets or exceeds customer expectations continuously.

Running Tests In Cypress With GitHub Actions [Complete Guide]

In today’s tech world, where speed is the key to modern software development, we should aim to get quick feedback on the impact of any change, and that is where CI/CD comes in place.

Digital transformation – part 2 – Enterprise vs Startup

Digital transformation - part 2 - Enterprise vs Startup

Difference Between Web vs Hybrid vs Native Apps

Native apps are developed specifically for one platform. Hence they are fast and deliver superior performance. They can be downloaded from various app stores and are not accessible through browsers.

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.