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How to use updateEmulateMedia method in Playwright Internal

Best JavaScript code snippet using playwright-internal

wkPage.js

Source:wkPage.js

...178        width: this._page._state.emulatedSize.screen.width,179        height: this._page._state.emulatedSize.screen.height180      }));181    }182    promises.push(this.updateEmulateMedia());183    promises.push(session.send('Network.setExtraHTTPHeaders', {184      headers: (0, _utils.headersArrayToObject)(this._calculateExtraHTTPHeaders(), false185      /* lowerCase */186      )187    }));188    if (contextOptions.offline) promises.push(session.send('Network.setEmulateOfflineState', {189      offline: true190    }));191    promises.push(session.send('Page.setTouchEmulationEnabled', {192      enabled: !!contextOptions.hasTouch193    }));194    if (contextOptions.timezoneId) {195      promises.push(session.send('Page.setTimeZone', {196        timeZone: contextOptions.timezoneId197      }).catch(e => {198        throw new Error(`Invalid timezone ID: ${contextOptions.timezoneId}`);199      }));200    }201    promises.push(session.send('Page.overrideSetting', {202      setting: 'DeviceOrientationEventEnabled',203      value: contextOptions.isMobile204    }));205    promises.push(session.send('Page.overrideSetting', {206      setting: 'FullScreenEnabled',207      value: !contextOptions.isMobile208    }));209    promises.push(session.send('Page.overrideSetting', {210      setting: 'NotificationsEnabled',211      value: !contextOptions.isMobile212    }));213    promises.push(session.send('Page.overrideSetting', {214      setting: 'PointerLockEnabled',215      value: !contextOptions.isMobile216    }));217    promises.push(session.send('Page.overrideSetting', {218      setting: 'InputTypeMonthEnabled',219      value: contextOptions.isMobile220    }));221    promises.push(session.send('Page.overrideSetting', {222      setting: 'InputTypeWeekEnabled',223      value: contextOptions.isMobile224    }));225    await Promise.all(promises);226  }227  _onDidCommitProvisionalTarget(event) {228    const {229      oldTargetId,230      newTargetId231    } = event;232    (0, _utils.assert)(this._provisionalPage);233    (0, _utils.assert)(this._provisionalPage._session.sessionId === newTargetId, 'Unknown new target: ' + newTargetId);234    (0, _utils.assert)(this._session.sessionId === oldTargetId, 'Unknown old target: ' + oldTargetId);235    const newSession = this._provisionalPage._session;236    this._provisionalPage.commit();237    this._provisionalPage.dispose();238    this._provisionalPage = null;239    this._setSession(newSession);240  }241  _onTargetDestroyed(event) {242    const {243      targetId,244      crashed245    } = event;246    if (this._provisionalPage && this._provisionalPage._session.sessionId === targetId) {247      this._provisionalPage._session.dispose(false);248      this._provisionalPage.dispose();249      this._provisionalPage = null;250    } else if (this._session.sessionId === targetId) {251      this._session.dispose(false);252      _eventsHelper.eventsHelper.removeEventListeners(this._sessionListeners);253      if (crashed) {254        this._session.markAsCrashed();255        this._page._didCrash();256      }257    }258  }259  didClose() {260    this._page._didClose();261  }262  dispose(disconnected) {263    this._pageProxySession.dispose(disconnected);264    _eventsHelper.eventsHelper.removeEventListeners(this._sessionListeners);265    _eventsHelper.eventsHelper.removeEventListeners(this._eventListeners);266    if (this._session) this._session.dispose(disconnected);267    if (this._provisionalPage) {268      this._provisionalPage._session.dispose(disconnected);269      this._provisionalPage.dispose();270      this._provisionalPage = null;271    }272    this._page._didDisconnect();273    this._firstNonInitialNavigationCommittedReject(new Error('Page closed'));274  }275  dispatchMessageToSession(message) {276    this._pageProxySession.dispatchMessage(message);277  }278  handleProvisionalLoadFailed(event) {279    if (!this._initializedPage) {280      this._firstNonInitialNavigationCommittedReject(new Error('Initial load failed'));281      return;282    }283    if (!this._provisionalPage) return;284    let errorText = event.error;285    if (errorText.includes('cancelled')) errorText += '; maybe frame was detached?';286    this._page._frameManager.frameAbortedNavigation(this._page.mainFrame()._id, errorText, event.loaderId);287  }288  handleWindowOpen(event) {289    (0, _utils.debugAssert)(!this._nextWindowOpenPopupFeatures);290    this._nextWindowOpenPopupFeatures = event.windowFeatures;291  }292  async pageOrError() {293    return this._pagePromise;294  }295  async _onTargetCreated(event) {296    const {297      targetInfo298    } = event;299    const session = new _wkConnection.WKSession(this._pageProxySession.connection, targetInfo.targetId, `Target closed`, message => {300      this._pageProxySession.send('Target.sendMessageToTarget', {301        message: JSON.stringify(message),302        targetId: targetInfo.targetId303      }).catch(e => {304        session.dispatchMessage({305          id: message.id,306          error: {307            message: e.message308          }309        });310      });311    });312    (0, _utils.assert)(targetInfo.type === 'page', 'Only page targets are expected in WebKit, received: ' + targetInfo.type);313    if (!targetInfo.isProvisional) {314      (0, _utils.assert)(!this._initializedPage);315      let pageOrError;316      try {317        this._setSession(session);318        await Promise.all([this._initializePageProxySession(), this._initializeSession(session, false, ({319          frameTree320        }) => this._handleFrameTree(frameTree))]);321        pageOrError = this._page;322      } catch (e) {323        pageOrError = e;324      }325      if (targetInfo.isPaused) this._pageProxySession.sendMayFail('Target.resume', {326        targetId: targetInfo.targetId327      });328      if (pageOrError instanceof _page.Page && this._page.mainFrame().url() === '') {329        try {330          // Initial empty page has an empty url. We should wait until the first real url has been loaded,331          // even if that url is about:blank. This is especially important for popups, where we need the332          // actual url before interacting with it.333          await this._firstNonInitialNavigationCommittedPromise;334        } catch (e) {335          pageOrError = e;336        }337      } else {338        // Avoid rejection on disconnect.339        this._firstNonInitialNavigationCommittedPromise.catch(() => {});340      }341      await this._page.initOpener(this._opener); // Note: it is important to call |reportAsNew| before resolving pageOrError promise,342      // so that anyone who awaits pageOrError got a ready and reported page.343      this._initializedPage = pageOrError instanceof _page.Page ? pageOrError : null;344      this._page.reportAsNew(pageOrError instanceof _page.Page ? undefined : pageOrError);345      this._pagePromise.resolve(pageOrError);346    } else {347      (0, _utils.assert)(targetInfo.isProvisional);348      (0, _utils.assert)(!this._provisionalPage);349      this._provisionalPage = new _wkProvisionalPage.WKProvisionalPage(session, this);350      if (targetInfo.isPaused) {351        this._provisionalPage.initializationPromise.then(() => {352          this._pageProxySession.sendMayFail('Target.resume', {353            targetId: targetInfo.targetId354          });355        });356      }357    }358  }359  _onDispatchMessageFromTarget(event) {360    const {361      targetId,362      message363    } = event;364    if (this._provisionalPage && this._provisionalPage._session.sessionId === targetId) this._provisionalPage._session.dispatchMessage(JSON.parse(message));else if (this._session.sessionId === targetId) this._session.dispatchMessage(JSON.parse(message));else throw new Error('Unknown target: ' + targetId);365  }366  _addSessionListeners() {367    // TODO: remove Page.willRequestOpenWindow and Page.didRequestOpenWindow from the protocol.368    this._sessionListeners = [_eventsHelper.eventsHelper.addEventListener(this._session, 'Page.frameNavigated', event => this._onFrameNavigated(event.frame, false)), _eventsHelper.eventsHelper.addEventListener(this._session, 'Page.navigatedWithinDocument', event => this._onFrameNavigatedWithinDocument(event.frameId, event.url)), _eventsHelper.eventsHelper.addEventListener(this._session, 'Page.frameAttached', event => this._onFrameAttached(event.frameId, event.parentFrameId)), _eventsHelper.eventsHelper.addEventListener(this._session, 'Page.frameDetached', event => this._onFrameDetached(event.frameId)), _eventsHelper.eventsHelper.addEventListener(this._session, 'Page.frameScheduledNavigation', event => this._onFrameScheduledNavigation(event.frameId)), _eventsHelper.eventsHelper.addEventListener(this._session, 'Page.frameStoppedLoading', event => this._onFrameStoppedLoading(event.frameId)), _eventsHelper.eventsHelper.addEventListener(this._session, 'Page.loadEventFired', event => this._onLifecycleEvent(event.frameId, 'load')), _eventsHelper.eventsHelper.addEventListener(this._session, 'Page.domContentEventFired', event => this._onLifecycleEvent(event.frameId, 'domcontentloaded')), _eventsHelper.eventsHelper.addEventListener(this._session, 'Runtime.executionContextCreated', event => this._onExecutionContextCreated(event.context)), _eventsHelper.eventsHelper.addEventListener(this._session, 'Console.messageAdded', event => this._onConsoleMessage(event)), _eventsHelper.eventsHelper.addEventListener(this._session, 'Console.messageRepeatCountUpdated', event => this._onConsoleRepeatCountUpdated(event)), _eventsHelper.eventsHelper.addEventListener(this._pageProxySession, 'Dialog.javascriptDialogOpening', event => this._onDialog(event)), _eventsHelper.eventsHelper.addEventListener(this._session, 'Page.fileChooserOpened', event => this._onFileChooserOpened(event)), _eventsHelper.eventsHelper.addEventListener(this._session, 'Network.requestWillBeSent', e => this._onRequestWillBeSent(this._session, e)), _eventsHelper.eventsHelper.addEventListener(this._session, 'Network.requestIntercepted', e => this._onRequestIntercepted(this._session, e)), _eventsHelper.eventsHelper.addEventListener(this._session, 'Network.responseReceived', e => this._onResponseReceived(e)), _eventsHelper.eventsHelper.addEventListener(this._session, 'Network.loadingFinished', e => this._onLoadingFinished(e)), _eventsHelper.eventsHelper.addEventListener(this._session, 'Network.loadingFailed', e => this._onLoadingFailed(e)), _eventsHelper.eventsHelper.addEventListener(this._session, 'Network.webSocketCreated', e => this._page._frameManager.onWebSocketCreated(e.requestId, e.url)), _eventsHelper.eventsHelper.addEventListener(this._session, 'Network.webSocketWillSendHandshakeRequest', e => this._page._frameManager.onWebSocketRequest(e.requestId)), _eventsHelper.eventsHelper.addEventListener(this._session, 'Network.webSocketHandshakeResponseReceived', e => this._page._frameManager.onWebSocketResponse(e.requestId, e.response.status, e.response.statusText)), _eventsHelper.eventsHelper.addEventListener(this._session, 'Network.webSocketFrameSent', e => e.response.payloadData && this._page._frameManager.onWebSocketFrameSent(e.requestId, e.response.opcode, e.response.payloadData)), _eventsHelper.eventsHelper.addEventListener(this._session, 'Network.webSocketFrameReceived', e => e.response.payloadData && this._page._frameManager.webSocketFrameReceived(e.requestId, e.response.opcode, e.response.payloadData)), _eventsHelper.eventsHelper.addEventListener(this._session, 'Network.webSocketClosed', e => this._page._frameManager.webSocketClosed(e.requestId)), _eventsHelper.eventsHelper.addEventListener(this._session, 'Network.webSocketFrameError', e => this._page._frameManager.webSocketError(e.requestId, e.errorMessage))];369  }370  async _updateState(method, params) {371    await this._forAllSessions(session => session.send(method, params).then());372  }373  async _forAllSessions(callback) {374    const sessions = [this._session]; // If the state changes during provisional load, push it to the provisional page375    // as well to always be in sync with the backend.376    if (this._provisionalPage) sessions.push(this._provisionalPage._session);377    await Promise.all(sessions.map(session => callback(session).catch(e => {})));378  }379  _onFrameScheduledNavigation(frameId) {380    this._page._frameManager.frameRequestedNavigation(frameId);381  }382  _onFrameStoppedLoading(frameId) {383    this._page._frameManager.frameStoppedLoading(frameId);384  }385  _onLifecycleEvent(frameId, event) {386    this._page._frameManager.frameLifecycleEvent(frameId, event);387  }388  _handleFrameTree(frameTree) {389    this._onFrameAttached(frameTree.frame.id, frameTree.frame.parentId || null);390    this._onFrameNavigated(frameTree.frame, true);391    this._page._frameManager.frameLifecycleEvent(frameTree.frame.id, 'domcontentloaded');392    this._page._frameManager.frameLifecycleEvent(frameTree.frame.id, 'load');393    if (!frameTree.childFrames) return;394    for (const child of frameTree.childFrames) this._handleFrameTree(child);395  }396  _onFrameAttached(frameId, parentFrameId) {397    return this._page._frameManager.frameAttached(frameId, parentFrameId);398  }399  _onFrameNavigated(framePayload, initial) {400    const frame = this._page._frameManager.frame(framePayload.id);401    (0, _utils.assert)(frame);402    this._removeContextsForFrame(frame, true);403    if (!framePayload.parentId) this._workers.clear();404    this._page._frameManager.frameCommittedNewDocumentNavigation(framePayload.id, framePayload.url, framePayload.name || '', framePayload.loaderId, initial);405    if (!initial) this._firstNonInitialNavigationCommittedFulfill();406  }407  _onFrameNavigatedWithinDocument(frameId, url) {408    this._page._frameManager.frameCommittedSameDocumentNavigation(frameId, url);409  }410  _onFrameDetached(frameId) {411    this._page._frameManager.frameDetached(frameId);412  }413  _removeContextsForFrame(frame, notifyFrame) {414    for (const [contextId, context] of this._contextIdToContext) {415      if (context.frame === frame) {416        this._contextIdToContext.delete(contextId);417        if (notifyFrame) frame._contextDestroyed(context);418      }419    }420  }421  _onExecutionContextCreated(contextPayload) {422    if (this._contextIdToContext.has(contextPayload.id)) return;423    const frame = this._page._frameManager.frame(contextPayload.frameId);424    if (!frame) return;425    const delegate = new _wkExecutionContext.WKExecutionContext(this._session, contextPayload.id);426    let worldName = null;427    if (contextPayload.type === 'normal') worldName = 'main';else if (contextPayload.type === 'user' && contextPayload.name === UTILITY_WORLD_NAME) worldName = 'utility';428    const context = new dom.FrameExecutionContext(delegate, frame, worldName);429    context[contextDelegateSymbol] = delegate;430    if (worldName) frame._contextCreated(worldName, context);431    if (contextPayload.type === 'normal' && frame === this._page.mainFrame()) this._mainFrameContextId = contextPayload.id;432    this._contextIdToContext.set(contextPayload.id, context);433  }434  async navigateFrame(frame, url, referrer) {435    if (this._pageProxySession.isDisposed()) throw new Error('Target closed');436    const pageProxyId = this._pageProxySession.sessionId;437    const result = await this._pageProxySession.connection.browserSession.send('Playwright.navigate', {438      url,439      pageProxyId,440      frameId: frame._id,441      referrer442    });443    return {444      newDocumentId: result.loaderId445    };446  }447  _onConsoleMessage(event) {448    // Note: do no introduce await in this function, otherwise we lose the ordering.449    // For example, frame.setContent relies on this.450    const {451      type,452      level,453      text,454      parameters,455      url,456      line: lineNumber,457      column: columnNumber,458      source459    } = event.message;460    if (level === 'debug' && parameters && parameters[0].value === BINDING_CALL_MESSAGE) {461      const parsedObjectId = JSON.parse(parameters[1].objectId);462      this.pageOrError().then(pageOrError => {463        const context = this._contextIdToContext.get(parsedObjectId.injectedScriptId);464        if (!(pageOrError instanceof Error) && context) this._page._onBindingCalled(parameters[2].value, context);465      });466      return;467    }468    if (level === 'error' && source === 'javascript') {469      const {470        name,471        message472      } = (0, _stackTrace.splitErrorMessage)(text);473      let stack;474      if (event.message.stackTrace) {475        stack = text + '\n' + event.message.stackTrace.map(callFrame => {476          return `    at ${callFrame.functionName || 'unknown'} (${callFrame.url}:${callFrame.lineNumber}:${callFrame.columnNumber})`;477        }).join('\n');478      } else {479        stack = '';480      }481      const error = new Error(message);482      error.stack = stack;483      error.name = name;484      this._page.firePageError(error);485      return;486    }487    let derivedType = type || '';488    if (type === 'log') derivedType = level;else if (type === 'timing') derivedType = 'timeEnd';489    const handles = [];490    for (const p of parameters || []) {491      let context;492      if (p.objectId) {493        const objectId = JSON.parse(p.objectId);494        context = this._contextIdToContext.get(objectId.injectedScriptId);495      } else {496        context = this._contextIdToContext.get(this._mainFrameContextId);497      }498      if (!context) return;499      handles.push(context.createHandle(p));500    }501    this._lastConsoleMessage = {502      derivedType,503      text,504      handles,505      count: 0,506      location: {507        url: url || '',508        lineNumber: (lineNumber || 1) - 1,509        columnNumber: (columnNumber || 1) - 1510      }511    };512    this._onConsoleRepeatCountUpdated({513      count: 1514    });515  }516  _onConsoleRepeatCountUpdated(event) {517    if (this._lastConsoleMessage) {518      const {519        derivedType,520        text,521        handles,522        count,523        location524      } = this._lastConsoleMessage;525      for (let i = count; i < event.count; ++i) this._page._addConsoleMessage(derivedType, handles, location, handles.length ? undefined : text);526      this._lastConsoleMessage.count = event.count;527    }528  }529  _onDialog(event) {530    this._page.emit(_page.Page.Events.Dialog, new dialog.Dialog(this._page, event.type, event.message, async (accept, promptText) => {531      await this._pageProxySession.send('Dialog.handleJavaScriptDialog', {532        accept,533        promptText534      });535    }, event.defaultPrompt));536  }537  async _onFileChooserOpened(event) {538    let handle;539    try {540      const context = await this._page._frameManager.frame(event.frameId)._mainContext();541      handle = context.createHandle(event.element).asElement();542    } catch (e) {543      // During async processing, frame/context may go away. We should not throw.544      return;545    }546    await this._page._onFileChooserOpened(handle);547  }548  static async _setEmulateMedia(session, mediaType, colorScheme, reducedMotion) {549    const promises = [];550    promises.push(session.send('Page.setEmulatedMedia', {551      media: mediaType || ''552    }));553    let appearance = undefined;554    switch (colorScheme) {555      case 'light':556        appearance = 'Light';557        break;558      case 'dark':559        appearance = 'Dark';560        break;561    }562    promises.push(session.send('Page.setForcedAppearance', {563      appearance564    }));565    let reducedMotionWk = undefined;566    switch (reducedMotion) {567      case 'reduce':568        reducedMotionWk = 'Reduce';569        break;570      case 'no-preference':571        reducedMotionWk = 'NoPreference';572        break;573    }574    promises.push(session.send('Page.setForcedReducedMotion', {575      reducedMotion: reducedMotionWk576    }));577    await Promise.all(promises);578  }579  async updateExtraHTTPHeaders() {580    await this._updateState('Network.setExtraHTTPHeaders', {581      headers: (0, _utils.headersArrayToObject)(this._calculateExtraHTTPHeaders(), false582      /* lowerCase */583      )584    });585  }586  _calculateExtraHTTPHeaders() {587    const locale = this._browserContext._options.locale;588    const headers = network.mergeHeaders([this._browserContext._options.extraHTTPHeaders, this._page._state.extraHTTPHeaders, locale ? network.singleHeader('Accept-Language', locale) : undefined]);589    return headers;590  }591  async updateEmulateMedia() {592    const colorScheme = this._page._state.colorScheme;593    const reducedMotion = this._page._state.reducedMotion;594    await this._forAllSessions(session => WKPage._setEmulateMedia(session, this._page._state.mediaType, colorScheme, reducedMotion));595  }596  async setEmulatedSize(emulatedSize) {597    (0, _utils.assert)(this._page._state.emulatedSize === emulatedSize);598    await this._updateViewport();599  }600  async bringToFront() {601    this._pageProxySession.send('Target.activate', {602      targetId: this._session.sessionId603    });604  }605  async _updateViewport() {...

ffPage.js

Source:ffPage.js

...317  }318  async bringToFront() {319    await this._session.send('Page.bringToFront', {});320  }321  async updateEmulateMedia() {322    const colorScheme = this._page._state.colorScheme === null ? undefined : this._page._state.colorScheme;323    const reducedMotion = this._page._state.reducedMotion === null ? undefined : this._page._state.reducedMotion;324    const forcedColors = this._page._state.forcedColors === null ? undefined : this._page._state.forcedColors;325    await this._session.send('Page.setEmulatedMedia', {326      // Empty string means reset.327      type: this._page._state.mediaType === null ? '' : this._page._state.mediaType,328      colorScheme,329      reducedMotion,330      forcedColors331    });332  }333  async updateRequestInterception() {334    await this._networkManager.setRequestInterception(this._page._needsRequestInterception());335  }...

page.js

Source:page.js

...247    if (options.media !== undefined) this._state.mediaType = options.media;248    if (options.colorScheme !== undefined) this._state.colorScheme = options.colorScheme;249    if (options.reducedMotion !== undefined) this._state.reducedMotion = options.reducedMotion;250    if (options.forcedColors !== undefined) this._state.forcedColors = options.forcedColors;251    await this._delegate.updateEmulateMedia();252    await this._doSlowMo();253  }254  async setViewportSize(viewportSize) {255    this._state.emulatedSize = {256      viewport: { ...viewportSize257      },258      screen: { ...viewportSize259      }260    };261    await this._delegate.setEmulatedSize(this._state.emulatedSize);262    await this._doSlowMo();263  }264  viewportSize() {265    var _this$_state$emulated;...

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.evaluate(() => {7    console.log('Page loaded with device size: ', window.innerWidth, 'x', window.innerHeight);8  });9  await context._updateEmulateMedia({10    screenSize: { width: 1920, height: 1080 },11    viewPosition: { x: 0, y: 0 },12    viewSize: { width: 1920, height: 1080 },13  });14  await page.evaluate(() => {15    console.log('Page loaded with device size: ', window.innerWidth, 'x', window.innerHeight);16  });17  await browser.close();18})();19const { webkit } = require('playwright');20(async () => {21  const browser = await webkit.launch();22  const context = await browser.newContext({23    viewport: {24    }25  });26  const page = await context.newPage();27  await page.screenshot({ path: 'google.png' });28  await browser.close();29})();

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.emulateMedia({ media: 'print' });7  await page.screenshot({ path: 'print.png' });8  await page.emulateMedia({ media: 'screen' });9  await page.screenshot({ path: 'screen.png' });10  await browser.close();11})();

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.emulateMedia({ media: 'print' });7  await page.screenshot({ path: `example.png` });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  await page.emulateMedia({ media: 'print' });16  await page.screenshot({ path: `example.png` });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.emulateMedia({ media: 'print' });25  await page.screenshot({ path: `example.png` });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  await page.emulateMedia({ media: 'print' });34  await page.screenshot({ path: `example.png` });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  await page.emulateMedia({ media: 'print' });43  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 context = await browser.newContext();5  const page = await context.newPage();6  await page.updateEmulateMedia('screen');7  await page.screenshot({ path: 'screenshot.png' });8  await browser.close();9})();10module.exports = {11  use: {12  },13};

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  await page.evaluate(() => {7    const width = 800;8    const height = 600;9    window.innerWidth = width;10    window.innerHeight = height;11    window.outerWidth = width;12    window.outerHeight = height;13    window.screen = { width, height };14  });15  await page.updateEmulateMedia();16  await page.screenshot({ path: `example.png` });17  await browser.close();18})();19const playwright = require('playwright');20(async () => {21  const browser = await playwright.chromium.launch();22  const context = await browser.newContext();23  const page = await context.newPage();24  await page.evaluate(() => {25    const width = 800;26    const height = 600;27    window.innerWidth = width;28    window.innerHeight = height;29    window.outerWidth = width;30    window.outerHeight = height;31    window.screen = { width, height };32  });33  await page.updateEmulateMedia();34  await page.screenshot({ path: `example.png` });35  await browser.close();36})();37const playwright = require('playwright');38(async () => {39  const browser = await playwright.chromium.launch();40  const context = await browser.newContext();41  const page = await context.newPage();42  await page.evaluate(() => {43    const width = 800;44    const height = 600;45    window.innerWidth = width;46    window.innerHeight = height;47    window.outerWidth = width;48    window.outerHeight = height;49    window.screen = { width, height };50  });51  await page.updateEmulateMedia();52  await page.screenshot({ path: `example.png` });53  await browser.close();54})();55const playwright = require('playwright');56(async () => {57  const browser = await playwright.chromium.launch();

Using AI Code Generation

1const { chromium } = require('playwright');2const { updateEmulateMedia } = require('playwright/lib/server/browserContext');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  await updateEmulateMedia(context, { colorScheme: 'dark' });7  const page = await context.newPage();8  await page.screenshot({ path: 'screenshot.png' });9  await browser.close();10})();11const { chromium } = require('playwright');12const { updateEmulateMedia } = require('playwright/lib/server/browserContext');13(async () => {14  const browser = await chromium.launch();15  const context = await browser.newContext();16  await updateEmulateMedia(context, { colorScheme: 'dark' });17  const page = await context.newPage();18  await page.screenshot({ path: 'screenshot.png' });19  await browser.close();20})();21const { chromium } = require('playwright');22const { updateEmulateMedia } = require('playwright/lib/server/browserContext');23(async () => {24  const browser = await chromium.launch();25  const context = await browser.newContext();26  await updateEmulateMedia(context, { colorScheme: 'dark' });27  const page = await context.newPage();28  await page.screenshot({ path: 'screenshot.png' });

Using AI Code Generation

1const {chromium} = require('playwright');2(async () => {3    const browser = await chromium.launch();4    const context = await browser.newContext({ viewport: null });5    const page = await context.newPage();6    await page.waitForTimeout(5000);7    await page.evaluate(() => {8        window.matchMedia = window.matchMedia || function() {9            return {10                addListener : function() {},11                removeListener: function() {}12            };13        };14    });15    await page.evaluate(() => {16        window.updateEmulateMedia = function(emulate) {17            window.matchMedia('(prefers-reduced-motion)').matches = emulate;18        };19    });20    await page.evaluate(() => {window.updateEmulateMedia(true);});21    await page.waitForTimeout(5000);22    await page.evaluate(() => {window.updateEmulateMedia(false);});23    await page.waitForTimeout(5000);24    await browser.close();25})();

Using AI Code Generation

1const { devices } = require('playwright-core/lib/server/deviceDescriptors');2const { chromium } = require('playwright-core');3const iPhone = devices['iPhone 6'];4(async () => {5  const browser = await chromium.launch({ headless: false });6  const context = await browser.newContext({7  });8  const page = await context.newPage();9  await page.emulateMedia({ media: 'print' });10  await page.screenshot({ path: `example.png` });11  await browser.close();12})();13const devices = {14  'iPhone 6': {15      'Mozilla/5.0 (iPhone; CPU iPhone OS 10_3_3 like Mac OS X) AppleWebKit/603.3.8 (KHTML, like Gecko) Version/10.0 Mobile/14G60 Safari/602.1',16    'viewport': {17    },18  },19};20module.exports = { devices };21const { devices } = require('playwright-core/lib/server/deviceDescriptors');22const { chromium } = require('playwright-core');23const iPhone = devices['iPhone 6'];24(async () => {25  const browser = await chromium.launch({ headless: false });26  const context = await browser.newContext({27  });28  const page = await context.newPage();29  await page.updateEmulateMedia({ media: 'print' });30  await page.screenshot({ path: `example.png` });31  await browser.close();32})();

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const context = await browser.newContext({5  });6  const page = await context.newPage();7  await page.evaluate(() => {8    window.playwright = {9      updateEmulateMedia: (mediaType) => {10        document.querySelectorAll('link[media]').forEach((link) => {11          link.media = mediaType;12        });13      }14    };15  });16  await page.evaluate(() => {17    window.playwright.updateEmulateMedia('screen');18  });19  await page.screenshot({ path: `screenshot.png` });20  await browser.close();21})();22{23  "scripts": {24  },25  "dependencies": {26  }27}

Using AI Code Generation

1const playwright = require('playwright');2const { chromium } = playwright;3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext({6  });7  const page = await context.newPage();8  await page.waitForTimeout(2000);9  await page.evaluate(() => {10    window._playwrightInternal.updateEmulateMedia('screen', 'print');11  });12  await page.screenshot({ path: 'screenshot.png' });13  await browser.close();14})();

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.