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How to use _startScreencast method in Playwright Internal
Best JavaScript code snippet using playwright-internal
crPage.js
Source:crPage.js 
...256 return this._sessionForHandle(handle)._scrollRectIntoViewIfNeeded(handle, rect);257 }258 async setScreencastOptions(options) {259 if (options) {260 await this._mainFrameSession._startScreencast(this, {261 format: 'jpeg',262 quality: options.quality,263 maxWidth: options.width,264 maxHeight: options.height265 });266 } else {267 await this._mainFrameSession._stopScreencast(this);268 }269 }270 rafCountForStablePosition() {271 return 1;272 }273 async getContentQuads(handle) {274 return this._sessionForHandle(handle)._getContentQuads(handle);275 }276 async setInputFiles(handle, files) {277 await handle.evaluateInUtility(([injected, node, files]) => injected.setInputFiles(node, files), files);278 }279 async adoptElementHandle(handle, to) {280 return this._sessionForHandle(handle)._adoptElementHandle(handle, to);281 }282 async getAccessibilityTree(needle) {283 return (0, _crAccessibility.getAccessibilityTree)(this._mainFrameSession._client, needle);284 }285 async inputActionEpilogue() {286 await this._mainFrameSession._client.send('Page.enable').catch(e => {});287 }288 async pdf(options) {289 return this._pdf.generate(options);290 }291 coverage() {292 return this._coverage;293 }294 async getFrameElement(frame) {295 let parent = frame.parentFrame();296 if (!parent) throw new Error('Frame has been detached.');297 const parentSession = this._sessionForFrame(parent);298 const {299 backendNodeId300 } = await parentSession._client.send('DOM.getFrameOwner', {301 frameId: frame._id302 }).catch(e => {303 if (e instanceof Error && e.message.includes('Frame with the given id was not found.')) (0, _stackTrace.rewriteErrorMessage)(e, 'Frame has been detached.');304 throw e;305 });306 parent = frame.parentFrame();307 if (!parent) throw new Error('Frame has been detached.');308 return parentSession._adoptBackendNodeId(backendNodeId, await parent._mainContext());309 }310}311exports.CRPage = CRPage;312class FrameSession {313 // Marks the oopif session that remote -> local transition has happened in the parent.314 // See Target.detachedFromTarget handler for details.315 constructor(crPage, client, targetId, parentSession) {316 this._client = void 0;317 this._crPage = void 0;318 this._page = void 0;319 this._networkManager = void 0;320 this._contextIdToContext = new Map();321 this._eventListeners = [];322 this._targetId = void 0;323 this._firstNonInitialNavigationCommittedPromise = void 0;324 this._firstNonInitialNavigationCommittedFulfill = () => {};325 this._firstNonInitialNavigationCommittedReject = e => {};326 this._windowId = void 0;327 this._swappedIn = false;328 this._videoRecorder = null;329 this._screencastId = null;330 this._screencastClients = new Set();331 this._client = client;332 this._crPage = crPage;333 this._page = crPage._page;334 this._targetId = targetId;335 this._networkManager = new _crNetworkManager.CRNetworkManager(client, this._page, parentSession ? parentSession._networkManager : null);336 this._firstNonInitialNavigationCommittedPromise = new Promise((f, r) => {337 this._firstNonInitialNavigationCommittedFulfill = f;338 this._firstNonInitialNavigationCommittedReject = r;339 });340 client.once(_crConnection.CRSessionEvents.Disconnected, () => {341 this._firstNonInitialNavigationCommittedReject(new Error('Page closed'));342 });343 }344 _isMainFrame() {345 return this._targetId === this._crPage._targetId;346 }347 _addRendererListeners() {348 this._eventListeners.push(...[_eventsHelper.eventsHelper.addEventListener(this._client, 'Log.entryAdded', event => this._onLogEntryAdded(event)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Page.fileChooserOpened', event => this._onFileChooserOpened(event)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Page.frameAttached', event => this._onFrameAttached(event.frameId, event.parentFrameId)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Page.frameDetached', event => this._onFrameDetached(event.frameId, event.reason)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Page.frameNavigated', event => this._onFrameNavigated(event.frame, false)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Page.frameRequestedNavigation', event => this._onFrameRequestedNavigation(event)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Page.frameStoppedLoading', event => this._onFrameStoppedLoading(event.frameId)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Page.javascriptDialogOpening', event => this._onDialog(event)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Page.navigatedWithinDocument', event => this._onFrameNavigatedWithinDocument(event.frameId, event.url)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Runtime.bindingCalled', event => this._onBindingCalled(event)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Runtime.consoleAPICalled', event => this._onConsoleAPI(event)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Runtime.exceptionThrown', exception => this._handleException(exception.exceptionDetails)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Runtime.executionContextCreated', event => this._onExecutionContextCreated(event.context)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Runtime.executionContextDestroyed', event => this._onExecutionContextDestroyed(event.executionContextId)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Runtime.executionContextsCleared', event => this._onExecutionContextsCleared()), _eventsHelper.eventsHelper.addEventListener(this._client, 'Target.attachedToTarget', event => this._onAttachedToTarget(event)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Target.detachedFromTarget', event => this._onDetachedFromTarget(event))]);349 }350 _addBrowserListeners() {351 this._eventListeners.push(...[_eventsHelper.eventsHelper.addEventListener(this._client, 'Inspector.targetCrashed', event => this._onTargetCrashed()), _eventsHelper.eventsHelper.addEventListener(this._client, 'Page.screencastFrame', event => this._onScreencastFrame(event)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Page.windowOpen', event => this._onWindowOpen(event))]);352 }353 async _initialize(hasUIWindow) {354 if (hasUIWindow && !this._crPage._browserContext._browser.isClank() && !this._crPage._browserContext._options.noDefaultViewport) {355 const {356 windowId357 } = await this._client.send('Browser.getWindowForTarget');358 this._windowId = windowId;359 }360 let screencastOptions;361 if (this._isMainFrame() && this._crPage._browserContext._options.recordVideo && hasUIWindow) {362 const screencastId = (0, _utils.createGuid)();363 const outputFile = _path.default.join(this._crPage._browserContext._options.recordVideo.dir, screencastId + '.webm');364 screencastOptions = { // validateBrowserContextOptions ensures correct video size.365 ...this._crPage._browserContext._options.recordVideo.size,366 outputFile367 };368 await this._crPage._browserContext._ensureVideosPath(); // Note: it is important to start video recorder before sending Page.startScreencast,369 // and it is equally important to send Page.startScreencast before sending Runtime.runIfWaitingForDebugger.370 await this._createVideoRecorder(screencastId, screencastOptions);371 this._crPage.pageOrError().then(p => {372 if (p instanceof Error) this._stopVideoRecording().catch(() => {});373 });374 }375 let lifecycleEventsEnabled;376 if (!this._isMainFrame()) this._addRendererListeners();377 this._addBrowserListeners();378 const promises = [this._client.send('Page.enable'), this._client.send('Page.getFrameTree').then(({379 frameTree380 }) => {381 if (this._isMainFrame()) {382 this._handleFrameTree(frameTree);383 this._addRendererListeners();384 }385 const localFrames = this._isMainFrame() ? this._page.frames() : [this._page._frameManager.frame(this._targetId)];386 for (const frame of localFrames) {387 // Note: frames might be removed before we send these.388 this._client._sendMayFail('Page.createIsolatedWorld', {389 frameId: frame._id,390 grantUniveralAccess: true,391 worldName: UTILITY_WORLD_NAME392 });393 for (const binding of this._crPage._browserContext._pageBindings.values()) frame.evaluateExpression(binding.source, false, undefined).catch(e => {});394 for (const source of this._crPage._browserContext._evaluateOnNewDocumentSources) frame.evaluateExpression(source, false, undefined, 'main').catch(e => {});395 }396 const isInitialEmptyPage = this._isMainFrame() && this._page.mainFrame().url() === ':';397 if (isInitialEmptyPage) {398 // Ignore lifecycle events for the initial empty page. It is never the final page399 // hence we are going to get more lifecycle updates after the actual navigation has400 // started (even if the target url is about:blank).401 lifecycleEventsEnabled.catch(e => {}).then(() => {402 this._eventListeners.push(_eventsHelper.eventsHelper.addEventListener(this._client, 'Page.lifecycleEvent', event => this._onLifecycleEvent(event)));403 });404 } else {405 this._firstNonInitialNavigationCommittedFulfill();406 this._eventListeners.push(_eventsHelper.eventsHelper.addEventListener(this._client, 'Page.lifecycleEvent', event => this._onLifecycleEvent(event)));407 }408 }), this._client.send('Log.enable', {}), lifecycleEventsEnabled = this._client.send('Page.setLifecycleEventsEnabled', {409 enabled: true410 }), this._client.send('Runtime.enable', {}), this._client.send('Page.addScriptToEvaluateOnNewDocument', {411 source: '',412 worldName: UTILITY_WORLD_NAME413 }), this._networkManager.initialize(), this._client.send('Target.setAutoAttach', {414 autoAttach: true,415 waitForDebuggerOnStart: true,416 flatten: true417 })];418 if (this._isMainFrame()) promises.push(this._client.send('Emulation.setFocusEmulationEnabled', {419 enabled: true420 }));421 const options = this._crPage._browserContext._options;422 if (options.bypassCSP) promises.push(this._client.send('Page.setBypassCSP', {423 enabled: true424 }));425 if (options.ignoreHTTPSErrors) promises.push(this._client.send('Security.setIgnoreCertificateErrors', {426 ignore: true427 }));428 if (this._isMainFrame()) promises.push(this._updateViewport());429 if (options.hasTouch) promises.push(this._client.send('Emulation.setTouchEmulationEnabled', {430 enabled: true431 }));432 if (options.javaScriptEnabled === false) promises.push(this._client.send('Emulation.setScriptExecutionDisabled', {433 value: true434 }));435 if (options.userAgent || options.locale) promises.push(this._client.send('Emulation.setUserAgentOverride', {436 userAgent: options.userAgent || '',437 acceptLanguage: options.locale438 }));439 if (options.locale) promises.push(emulateLocale(this._client, options.locale));440 if (options.timezoneId) promises.push(emulateTimezone(this._client, options.timezoneId));441 promises.push(this._updateGeolocation(true));442 promises.push(this._updateExtraHTTPHeaders(true));443 promises.push(this._updateRequestInterception());444 promises.push(this._updateOffline(true));445 promises.push(this._updateHttpCredentials(true));446 promises.push(this._updateEmulateMedia(true));447 for (const binding of this._crPage._page.allBindings()) promises.push(this._initBinding(binding));448 for (const source of this._crPage._browserContext._evaluateOnNewDocumentSources) promises.push(this._evaluateOnNewDocument(source, 'main'));449 for (const source of this._crPage._page._evaluateOnNewDocumentSources) promises.push(this._evaluateOnNewDocument(source, 'main'));450 if (screencastOptions) promises.push(this._startVideoRecording(screencastOptions));451 promises.push(this._client.send('Runtime.runIfWaitingForDebugger'));452 promises.push(this._firstNonInitialNavigationCommittedPromise);453 await Promise.all(promises);454 }455 dispose() {456 _eventsHelper.eventsHelper.removeEventListeners(this._eventListeners);457 this._networkManager.dispose();458 this._crPage._sessions.delete(this._targetId);459 }460 async _navigate(frame, url, referrer) {461 const response = await this._client.send('Page.navigate', {462 url,463 referrer,464 frameId: frame._id465 });466 if (response.errorText) throw new Error(`${response.errorText} at ${url}`);467 return {468 newDocumentId: response.loaderId469 };470 }471 _onLifecycleEvent(event) {472 if (this._eventBelongsToStaleFrame(event.frameId)) return;473 if (event.name === 'load') this._page._frameManager.frameLifecycleEvent(event.frameId, 'load');else if (event.name === 'DOMContentLoaded') this._page._frameManager.frameLifecycleEvent(event.frameId, 'domcontentloaded');474 }475 _onFrameStoppedLoading(frameId) {476 if (this._eventBelongsToStaleFrame(frameId)) return;477 this._page._frameManager.frameStoppedLoading(frameId);478 }479 _handleFrameTree(frameTree) {480 this._onFrameAttached(frameTree.frame.id, frameTree.frame.parentId || null);481 this._onFrameNavigated(frameTree.frame, true);482 if (!frameTree.childFrames) return;483 for (const child of frameTree.childFrames) this._handleFrameTree(child);484 }485 _eventBelongsToStaleFrame(frameId) {486 const frame = this._page._frameManager.frame(frameId); // Subtree may be already gone because some ancestor navigation destroyed the oopif.487 if (!frame) return true; // When frame goes remote, parent process may still send some events488 // related to the local frame before it sends frameDetached.489 // In this case, we already have a new session for this frame, so events490 // in the old session should be ignored.491 const session = this._crPage._sessionForFrame(frame);492 return session && session !== this && !session._swappedIn;493 }494 _onFrameAttached(frameId, parentFrameId) {495 const frameSession = this._crPage._sessions.get(frameId);496 if (frameSession && frameId !== this._targetId) {497 // This is a remote -> local frame transition.498 frameSession._swappedIn = true;499 const frame = this._page._frameManager.frame(frameId); // Frame or even a whole subtree may be already gone, because some ancestor did navigate.500 if (frame) this._page._frameManager.removeChildFramesRecursively(frame);501 return;502 }503 if (parentFrameId && !this._page._frameManager.frame(parentFrameId)) {504 // Parent frame may be gone already because some ancestor frame navigated and505 // destroyed the whole subtree of some oopif, while oopif's process is still sending us events.506 // Be careful to not confuse this with "main frame navigated cross-process" scenario507 // where parentFrameId is null.508 return;509 }510 this._page._frameManager.frameAttached(frameId, parentFrameId);511 }512 _onFrameNavigated(framePayload, initial) {513 if (this._eventBelongsToStaleFrame(framePayload.id)) return;514 this._page._frameManager.frameCommittedNewDocumentNavigation(framePayload.id, framePayload.url + (framePayload.urlFragment || ''), framePayload.name || '', framePayload.loaderId, initial);515 if (!initial) this._firstNonInitialNavigationCommittedFulfill();516 }517 _onFrameRequestedNavigation(payload) {518 if (this._eventBelongsToStaleFrame(payload.frameId)) return;519 if (payload.disposition === 'currentTab') this._page._frameManager.frameRequestedNavigation(payload.frameId);520 }521 _onFrameNavigatedWithinDocument(frameId, url) {522 if (this._eventBelongsToStaleFrame(frameId)) return;523 this._page._frameManager.frameCommittedSameDocumentNavigation(frameId, url);524 }525 _onFrameDetached(frameId, reason) {526 if (this._crPage._sessions.has(frameId)) {527 // This is a local -> remote frame transtion, where528 // Page.frameDetached arrives after Target.attachedToTarget.529 // We've already handled the new target and frame reattach - nothing to do here.530 return;531 }532 if (reason === 'swap') {533 // This is a local -> remote frame transtion, where534 // Page.frameDetached arrives before Target.attachedToTarget.535 // We should keep the frame in the tree, and it will be used for the new target.536 const frame = this._page._frameManager.frame(frameId);537 if (frame) this._page._frameManager.removeChildFramesRecursively(frame);538 return;539 } // Just a regular frame detach.540 this._page._frameManager.frameDetached(frameId);541 }542 _onExecutionContextCreated(contextPayload) {543 const frame = contextPayload.auxData ? this._page._frameManager.frame(contextPayload.auxData.frameId) : null;544 if (!frame || this._eventBelongsToStaleFrame(frame._id)) return;545 const delegate = new _crExecutionContext.CRExecutionContext(this._client, contextPayload);546 let worldName = null;547 if (contextPayload.auxData && !!contextPayload.auxData.isDefault) worldName = 'main';else if (contextPayload.name === UTILITY_WORLD_NAME) worldName = 'utility';548 const context = new dom.FrameExecutionContext(delegate, frame, worldName);549 context[contextDelegateSymbol] = delegate;550 if (worldName) frame._contextCreated(worldName, context);551 this._contextIdToContext.set(contextPayload.id, context);552 }553 _onExecutionContextDestroyed(executionContextId) {554 const context = this._contextIdToContext.get(executionContextId);555 if (!context) return;556 this._contextIdToContext.delete(executionContextId);557 context.frame._contextDestroyed(context);558 }559 _onExecutionContextsCleared() {560 for (const contextId of Array.from(this._contextIdToContext.keys())) this._onExecutionContextDestroyed(contextId);561 }562 _onAttachedToTarget(event) {563 const session = _crConnection.CRConnection.fromSession(this._client).session(event.sessionId);564 if (event.targetInfo.type === 'iframe') {565 // Frame id equals target id.566 const targetId = event.targetInfo.targetId;567 const frame = this._page._frameManager.frame(targetId);568 if (!frame) return; // Subtree may be already gone due to renderer/browser race.569 this._page._frameManager.removeChildFramesRecursively(frame);570 const frameSession = new FrameSession(this._crPage, session, targetId, this);571 this._crPage._sessions.set(targetId, frameSession);572 frameSession._initialize(false).catch(e => e);573 return;574 }575 if (event.targetInfo.type !== 'worker') {576 // Ideally, detaching should resume any target, but there is a bug in the backend.577 session._sendMayFail('Runtime.runIfWaitingForDebugger').then(() => {578 this._client._sendMayFail('Target.detachFromTarget', {579 sessionId: event.sessionId580 });581 });582 return;583 }584 const url = event.targetInfo.url;585 const worker = new _page.Worker(this._page, url);586 this._page._addWorker(event.sessionId, worker);587 session.once('Runtime.executionContextCreated', async event => {588 worker._createExecutionContext(new _crExecutionContext.CRExecutionContext(session, event.context));589 }); // This might fail if the target is closed before we initialize.590 session._sendMayFail('Runtime.enable');591 session._sendMayFail('Network.enable');592 session._sendMayFail('Runtime.runIfWaitingForDebugger');593 session.on('Runtime.consoleAPICalled', event => {594 const args = event.args.map(o => worker._existingExecutionContext.createHandle(o));595 this._page._addConsoleMessage(event.type, args, (0, _crProtocolHelper.toConsoleMessageLocation)(event.stackTrace));596 });597 session.on('Runtime.exceptionThrown', exception => this._page.emit(_page.Page.Events.PageError, (0, _crProtocolHelper.exceptionToError)(exception.exceptionDetails))); // TODO: attribute workers to the right frame.598 this._networkManager.instrumentNetworkEvents(session, this._page._frameManager.frame(this._targetId));599 }600 _onDetachedFromTarget(event) {601 // This might be a worker...602 this._page._removeWorker(event.sessionId); // ... or an oopif.603 const childFrameSession = this._crPage._sessions.get(event.targetId);604 if (!childFrameSession) return; // Usually, we get frameAttached in this session first and mark child as swappedIn.605 if (childFrameSession._swappedIn) {606 childFrameSession.dispose();607 return;608 } // However, sometimes we get detachedFromTarget before frameAttached.609 // In this case we don't know wheter this is a remote frame detach,610 // or just a remote -> local transition. In the latter case, frameAttached611 // is already inflight, so let's make a safe roundtrip to ensure it arrives.612 this._client.send('Page.enable').catch(e => null).then(() => {613 // Child was not swapped in - that means frameAttached did not happen and614 // this is remote detach rather than remote -> local swap.615 if (!childFrameSession._swappedIn) this._page._frameManager.frameDetached(event.targetId);616 childFrameSession.dispose();617 });618 }619 _onWindowOpen(event) {620 this._crPage._nextWindowOpenPopupFeatures.push(event.windowFeatures);621 }622 async _onConsoleAPI(event) {623 if (event.executionContextId === 0) {624 // DevTools protocol stores the last 1000 console messages. These625 // messages are always reported even for removed execution contexts. In626 // this case, they are marked with executionContextId = 0 and are627 // reported upon enabling Runtime agent.628 //629 // Ignore these messages since:630 // - there's no execution context we can use to operate with message631 // arguments632 // - these messages are reported before Playwright clients can subscribe633 // to the 'console'634 // page event.635 //636 // @see https://github.com/GoogleChrome/puppeteer/issues/3865637 return;638 }639 const context = this._contextIdToContext.get(event.executionContextId);640 if (!context) return;641 const values = event.args.map(arg => context.createHandle(arg));642 this._page._addConsoleMessage(event.type, values, (0, _crProtocolHelper.toConsoleMessageLocation)(event.stackTrace));643 }644 async _initBinding(binding) {645 await Promise.all([this._client.send('Runtime.addBinding', {646 name: binding.name647 }), this._client.send('Page.addScriptToEvaluateOnNewDocument', {648 source: binding.source649 })]);650 }651 async _onBindingCalled(event) {652 const pageOrError = await this._crPage.pageOrError();653 if (!(pageOrError instanceof Error)) {654 const context = this._contextIdToContext.get(event.executionContextId);655 if (context) await this._page._onBindingCalled(event.payload, context);656 }657 }658 _onDialog(event) {659 if (!this._page._frameManager.frame(this._targetId)) return; // Our frame/subtree may be gone already.660 this._page.emit(_page.Page.Events.Dialog, new dialog.Dialog(this._page, event.type, event.message, async (accept, promptText) => {661 await this._client.send('Page.handleJavaScriptDialog', {662 accept,663 promptText664 });665 }, event.defaultPrompt));666 }667 _handleException(exceptionDetails) {668 this._page.firePageError((0, _crProtocolHelper.exceptionToError)(exceptionDetails));669 }670 async _onTargetCrashed() {671 this._client._markAsCrashed();672 this._page._didCrash();673 }674 _onLogEntryAdded(event) {675 const {676 level,677 text,678 args,679 source,680 url,681 lineNumber682 } = event.entry;683 if (args) args.map(arg => (0, _crProtocolHelper.releaseObject)(this._client, arg.objectId));684 if (source !== 'worker') {685 const location = {686 url: url || '',687 lineNumber: lineNumber || 0,688 columnNumber: 0689 };690 this._page._addConsoleMessage(level, [], location, text);691 }692 }693 async _onFileChooserOpened(event) {694 const frame = this._page._frameManager.frame(event.frameId);695 if (!frame) return;696 let handle;697 try {698 const utilityContext = await frame._utilityContext();699 handle = await this._adoptBackendNodeId(event.backendNodeId, utilityContext);700 } catch (e) {701 // During async processing, frame/context may go away. We should not throw.702 return;703 }704 await this._page._onFileChooserOpened(handle);705 }706 _willBeginDownload() {707 const originPage = this._crPage._initializedPage;708 if (!originPage) {709 // Resume the page creation with an error. The page will automatically close right710 // after the download begins.711 this._firstNonInitialNavigationCommittedReject(new Error('Starting new page download'));712 }713 }714 _onScreencastFrame(payload) {715 this._page.throttleScreencastFrameAck(() => {716 this._client.send('Page.screencastFrameAck', {717 sessionId: payload.sessionId718 }).catch(() => {});719 });720 const buffer = Buffer.from(payload.data, 'base64');721 this._page.emit(_page.Page.Events.ScreencastFrame, {722 buffer,723 timestamp: payload.metadata.timestamp,724 width: payload.metadata.deviceWidth,725 height: payload.metadata.deviceHeight726 });727 }728 async _createVideoRecorder(screencastId, options) {729 (0, _utils.assert)(!this._screencastId);730 const ffmpegPath = _registry.registry.findExecutable('ffmpeg').executablePathOrDie(this._page._browserContext._browser.options.sdkLanguage);731 this._videoRecorder = await _videoRecorder.VideoRecorder.launch(this._crPage._page, ffmpegPath, options);732 this._screencastId = screencastId;733 }734 async _startVideoRecording(options) {735 const screencastId = this._screencastId;736 (0, _utils.assert)(screencastId);737 this._page.once(_page.Page.Events.Close, () => this._stopVideoRecording().catch(() => {}));738 const gotFirstFrame = new Promise(f => this._client.once('Page.screencastFrame', f));739 await this._startScreencast(this._videoRecorder, {740 format: 'jpeg',741 quality: 90,742 maxWidth: options.width,743 maxHeight: options.height744 }); // Wait for the first frame before reporting video to the client.745 gotFirstFrame.then(() => {746 this._crPage._browserContext._browser._videoStarted(this._crPage._browserContext, screencastId, options.outputFile, this._crPage.pageOrError());747 });748 }749 async _stopVideoRecording() {750 if (!this._screencastId) return;751 const screencastId = this._screencastId;752 this._screencastId = null;753 const recorder = this._videoRecorder;754 this._videoRecorder = null;755 await this._stopScreencast(recorder);756 await recorder.stop().catch(() => {}); // Keep the video artifact in the map utntil encoding is fully finished, if the context757 // starts closing before the video is fully written to disk it will wait for it.758 const video = this._crPage._browserContext._browser._takeVideo(screencastId);759 video === null || video === void 0 ? void 0 : video.reportFinished();760 }761 async _startScreencast(client, options = {}) {762 this._screencastClients.add(client);763 if (this._screencastClients.size === 1) await this._client.send('Page.startScreencast', options);764 }765 async _stopScreencast(client) {766 this._screencastClients.delete(client);767 if (!this._screencastClients.size) await this._client._sendMayFail('Page.stopScreencast');768 }769 async _updateExtraHTTPHeaders(initial) {770 const headers = network.mergeHeaders([this._crPage._browserContext._options.extraHTTPHeaders, this._page._state.extraHTTPHeaders]);771 if (!initial || headers.length) await this._client.send('Network.setExtraHTTPHeaders', {772 headers: (0, _utils.headersArrayToObject)(headers, false773 /* lowerCase */774 )775 });...
tracing.js
Source:tracing.js
...106 await (0, _utils.mkdirIfNeeded)(state.traceFile);107 await _fs.default.promises.appendFile(state.traceFile, JSON.stringify(this._contextCreatedEvent) + '\n');108 });109 this._context.instrumentation.addListener(this);110 if (state.options.screenshots) this._startScreencast();111 if (state.options.snapshots) await this._snapshotter.start();112 }113 _startScreencast() {114 for (const page of this._context.pages()) this._startScreencastInPage(page);115 this._screencastListeners.push(_eventsHelper.eventsHelper.addEventListener(this._context, _browserContext.BrowserContext.Events.Page, this._startScreencastInPage.bind(this)));116 }117 _stopScreencast() {118 _eventsHelper.eventsHelper.removeEventListeners(this._screencastListeners);119 for (const page of this._context.pages()) page.setScreencastOptions(null);120 }121 async stop() {122 if (!this._state) return;123 if (this._isStopping) throw new Error(`Tracing is already stopping`);124 if (this._state.recording) throw new Error(`Must stop trace file before stopping tracing`);125 this._harTracer.stop();126 await this._writeChain;127 this._state = undefined;...
config.js
Source:config.js
...5VideoReporter.prototype.jasmineStarted = function () {6 let self = this;7 if (self.options.singleVideo) {8 const videoPath = path.join(self.options.baseDirectory, "protractor-specs.avi");9 self._startScreencast(videoPath);10 if (self.options.createSubtitles) {11 self._subtitles = [];12 self._jasmineStartTime = new Date();13 }14 }15};16const videoReport = new VideoReporter({17 baseDirectory: path.join(__dirname, "../__report__/__video-report__"),18 saveSuccessVideos: true,19 createSubtitles: true,20 singleVideo: true,21 ffmpegCmd: path.normalize("./node_modules/ffmpeg-binaries/bin/ffmpeg.exe"),22 ffmpegArgs: [23 "-f", "gdigrab",...
VideoReporter.js
Source:VideoReporter.js
...111VideoReporter.prototype.specStarted = function(result) {112 var self = this;113 if (!self.options.singleVideo) {114 var videoPath = Path.join(self.options.baseDirectory, self._singleVideoPath(result));115 self._startScreencast(videoPath);116 } else if (self.options.createSubtitles) {117 self._currentSubtitle = {118 id: self._subtitles.length + 1,119 startTime: new Date() - self._jasmineStartTime120 };121 }122};123VideoReporter.prototype.specDone = function(result) {124 var self = this;125 if (!self.options.singleVideo) {126 var removeVideo;127 if (result.status === 'failed' || (result.status === 'passed' && self.options.saveSuccessVideos)) {128 removeVideo = 'no';129 // If the spec was not run then the file probably was not created yet130 // so we just try to delete it131 } else if (result.status === 'pending' || result.status === 'disabled') {132 removeVideo = 'try';133 } else {134 removeVideo = 'yes';135 }136 self._stopScreencast(removeVideo);137 } else if (self.options.createSubtitles) {138 self._currentSubtitle.endTime = new Date() - self._jasmineStartTime;139 140 var text = '';141 switch (result.status) {142 case 'passed':143 text += '<font color="green">SUCCESS</font>';144 break;145 case 'failed':146 text += '<font color="red">FAILED</font>';147 break;148 case 'pending':149 text += '<font color="yellow">PENDING</font>';150 break;151 }152 text += ' ' + result.description;153 self._currentSubtitle.text = text;154 self._subtitles.push(self._currentSubtitle);155 }156};157VideoReporter.prototype.jasmineStarted = function() {158 var self = this;159 if (self.options.singleVideo) {160 var videoPath = Path.join(self.options.baseDirectory, 'protractor-specs.mov');161 self._startScreencast(videoPath);162 if (self.options.createSubtitles) {163 self._subtitles = [];164 self._jasmineStartTime = new Date();165 }166 }167};168VideoReporter.prototype.jasmineDone = function() {169 var self = this;170 if (self.options.singleVideo) {171 self._stopScreencast('no');172 if (self.options.createSubtitles) {173 Fs.writeFileSync(174 Path.join(self.options.baseDirectory, 'protractor-specs.srt'),175 SubtitlesParser.toSrt(self._subtitles),...
cong.js
Source:cong.js
...37 // let self = this;38 // if (self.options.singleVideo) {39 // let videoPath = path.join(self.options.baseDirectory,40 // 'protractor-specs.avi');41 // self._startScreencast(videoPath);42 // if (self.options.createSubtitles) {43 // self._subtitles = [];44 // self._jasmineStartTime = new Date();45 // }46 // }47 // };48 49 50 51 //Allure report52 var AllureReporter = require('jasmine-allure-reporter');53 jasmine.getEnv().addReporter(new AllureReporter({54 resultsDir: 'allure-results'55 }));...
conf.docker.js
Source:conf.docker.js
...48 // VideoReporter.prototype.jasmineStarted = function() {49 // var self = this;50 // if (self.options.singleVideo) {51 // var videoPath = path.join(self.options.baseDirectory, 'protractor-specs.avi');52 // self._startScreencast(videoPath);53 // if (self.options.createSubtitles) {54 // self._subtitles = [];55 // self._jasmineStartTime = new Date();56 // }57 // }58 // }; 59 // jasmine.getEnv().addReporter(new VideoReporter({60 // baseDirectory: path.normalize(path.join(__dirname, '../testresults/videos/')),61 // createSubtitles: true,62 // singleVideo: true,63 // ffmpegCmd: path.normalize('./node_modules/ffmpeg-binaries/bin/ffmpeg.exe'),64 // ffmpegArgs: [65 // '-f', 'gdigrab',66 // '-framerate', '24',...
conf.js
Source:conf.js
...39 // VideoReporter.prototype.jasmineStarted = function() {40 // var self = this;41 // if (self.options.singleVideo) {42 // var videoPath = path.join(self.options.baseDirectory, 'protractor-specs.avi');43 // self._startScreencast(videoPath);44 // if (self.options.createSubtitles) {45 // self._subtitles = [];46 // self._jasmineStartTime = new Date();47 // }48 // }49 // }; 50 // jasmine.getEnv().addReporter(new VideoReporter({51 // baseDirectory: path.normalize(path.join(__dirname, '../testresults/videos/')),52 // createSubtitles: true,53 // singleVideo: true,54 // ffmpegCmd: path.normalize('./node_modules/ffmpeg-binaries/bin/ffmpeg.exe'),55 // ffmpegArgs: [56 // '-f', 'gdigrab',57 // '-framerate', '24',...
protractor.video.conf.js
Source:protractor.video.conf.js
...32 VideoReporter.prototype.jasmineStarted = function() {33 var self = this;34 if (self.options.singleVideo) {35 var videoPath = path.join(self.options.baseDirectory, 'protractor-specs-' + Date.now() +'.mp4');36 self._startScreencast(videoPath);37 if (self.options.createSubtitles) {38 self._subtitles = [];39 self._jasmineStartTime = new Date();40 }41 }42 };43 require('ts-node').register({44 project: require('path').join(__dirname, './tsconfig.json')45 });46 jasmine.getEnv().addReporter(new SpecReporter({47 spec: {48 displayStacktrace: StacktraceOption.PRETTY49 }50 }));...
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._startScreencast({7 });8 await page.waitForTimeout(10000);9 await page._stopScreencast();10 await browser.close();11})();
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 screencast = await page._delegate._startScreencast();7 await screencast._stop();8 await browser.close();9})();10 at CDPSession.send (C:\Users\user\playwright\playwright\lib\cdp.js:23:15)11 at Page._startScreencast (C:\Users\user\playwright\playwright\lib\page.js:111:25)12 at processTicksAndRejections (internal/process/task_queues.js:97:5)13 at async Object.<anonymous> (C:\Users\user\playwright\test.js:11:33)
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._startScreencast();7 await page.waitForTimeout(5000);8 await page._stopScreencast();9 await browser.close();10})();
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._startScreencast({ 'format': 'mp4', 'everyNthFrame': 1, 'maxWidth': 1280, 'maxHeight': 720, 'quality': 100 });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._stopScreencast();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._crStartJSCoverage();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._crStopJSCoverage();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.goto('
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._startScreencast({ format: 'mp4', everyNthFrame: 1 });7})();8const { chromium } = require('playwright');9(async () => {10 const browser = await chromium.launch({ headless: false });11 const context = await browser.newContext();12 const page = await context.newPage();13 await page._stopScreencast();14})();
Using AI Code Generation
1const { chromium } = require('playwright');2const fs = require('fs');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 const client = await page.context().newCDPSession(page);8 const { format, data } = await client.send('Page.startScreencast', {9 });10 fs.writeFileSync('screencast.jpeg', Buffer.from(data, 'base64'));11 await browser.close();12})();13{14 "dependencies": {15 }16}17Protocol error (Page.screencastFrame): Cannot capture frame without starting screencast18const { chromium } = require('playwright');19const fs = require('fs');20(async () => {21 const browser = await chromium.launch();22 const context = await browser.newContext();23 const page = await context.newPage();24 const client = await page.context().newCDPSession(page);25 await client.send('Page.startScreencast', {26 });27 const { data } = await client.send('Page.screencastFrame');28 fs.writeFileSync('screencast.jpeg', Buffer.from(data, 'base64'));29 await browser.close();30})();31Protocol error (Page.startScreencast): Cannot capture frame without starting screencast32const { chromium } = require('playwright');
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._startScreencast({format: 'png', everyNthFrame: 1});7 await page.waitForTimeout(5000);8 const screencast = await page._stopScreencast();9 console.log(screencast);10 await browser.close();11})();
Using AI Code Generation
1await page._startScreencast();2await page._stopScreencast();3await page._screencastFrameAck({ sessionId: 'sessionId' });4await page._screencastVisibilityChanged({ visible: true });5await page._screencastFrame({ sessionId: 'sessionId', data: 'data' });6await page._screencastVideo({ sessionId: 'sessionId', data: 'data' });7await page._screencastStopped({ sessionId: 'sessionId' });8await page._screencastFrame({ sessionId: 'sessionId', data: 'data' });9await page._screencastVideo({ sessionId: 'sessionId', data: 'data' });10await page._screencastStopped({ sessionId: 'sessionId' });11await page._screencastFrame({ sessionId: 'sessionId', data: 'data' });12await page._screencastVideo({ sessionId: 'sessionId', data: 'data' });13await page._screencastStopped({ sessionId: 'sessionId' });14await page._screencastFrame({ sessionId: 'sessionId', data: 'data' });15await page._screencastVideo({ sessionId: 'sessionId', data: 'data' });
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.screenshot({ path: `example.png` });7 await browser.close();8})();9const { chromium } = require('playwright');10(async () => {11 const browser = await chromium.launch({ headless: false });12 const context = await browser.newContext();13 const page = await context.newPage();14 await page.screenshot({ path: `example.png` });15 await browser.close();16})();17const { chromium } = require('playwright');18(async () => {19 const browser = await chromium.launch({ headless: false });20 const context = await browser.newContext();21 const page = await context.newPage();22 await page.screenshot({ path: `example.png` });23 await browser.close();24})();25const { chromium } = require('playwright');26(async () => {27 const browser = await chromium.launch({ headless: false });28 const context = await browser.newContext();29 const page = await context.newPage();30 await page.screenshot({ path: `example.png` });31 await browser.close();32})();33const { chromium } = require('playwright');34(async () => {35 const browser = await chromium.launch({ headless: false });36 const context = await browser.newContext();37 const page = await context.newPage();38 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._startScreencast({ format: 'mp4', everyNthFrame: 10 });7 await page._stopScreencast();8 await browser.close();9})();10const { chromium } = require('playwright');11(async () => {12 const browser = await chromium.launch({ headless: false });13 const context = await browser.newContext();14 const page = await context.newPage();15 await page._startScreencast({ format: 'webm', everyNthFrame: 10 });16 await page._stopScreencast();17 await browser.close();18})();19const { chromium } = require('playwright');20(async () => {21 const browser = await chromium.launch({ headless: false });22 const context = await browser.newContext();23 const page = await context.newPage();24 await page._startScreencast({ format: 'webm', everyNthFrame: 10, maxWidth: 1920, maxHeight: 1080 });25 await page._stopScreencast();26 await browser.close();27})();28const { chromium } = require('playwright');29(async () => {30 const browser = await chromium.launch({ headless: false });31 const context = await browser.newContext();32 const page = await context.newPage();33 await page._startScreencast({ format: 'webm', everyNthFrame: 10, maxWidth: 1920, maxHeight: 1080 });
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.
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