KaneAI - World’s First E2E Software Testing Agent.Signup for Private Beta 
How to use stopTracing method in Playwright Internal
Best JavaScript code snippet using playwright-internal
trace.js
Source:trace.js 
...82 .then(function () {83 reloadRunningTracingData();84 });85 }86 function stopTracing() {87 var data = {88 traceConfigurationId: scope.trace.traceConfiguration.id89 };90 stopTraceTimer();91 trace.stopTracing(data)92 .then(function () {93 reloadTracingData();94 reloadRunningTracingData();95 });96 }97 function getTraceById(traceId) {98 var itemToReturn = null;99 scope.traceResults.forEach(function (item) {100 if (item.id === traceId) {101 itemToReturn = item;102 }103 });104 return itemToReturn;105 }...
LogData.js
Source:LogData.js
...89 this.functionExit = function (iid, returnVal, wrappedExceptionVal) {90 logEvent('E,' + sandbox.sid + "," + iid + "," + getValue(returnVal) + "," + getType(returnVal));91 };92 this.endExecution = function () {93 traceWriter.stopTracing();94 var tw = new sandbox.TraceWriter("strings.json");95 tw.logToFile(JSON.stringify(stringList)+"\n");96 tw.stopTracing();97 tw = new sandbox.TraceWriter("smap.json");98 tw.logToFile(JSON.stringify(sandbox.smap)+"\n");99 tw.stopTracing();100 };101 this.runInstrumentedFunctionBody = function (iid, f, functionIid) {102 return false;103 };104 /**105 * onReady is useful if your analysis is running on node.js (i.e., via the direct.js or jalangi.js commands)106 * and needs to complete some asynchronous initialization before the instrumented program starts. In such a107 * case, once the initialization is complete, invoke the cb function to start execution of the instrumented108 * program.109 *110 * Note that this callback is not useful in the browser, as Jalangi has no control over when the111 * instrumented program runs there.112 * @param cb113 */...
browserDispatcher.js
Source:browserDispatcher.js
...62 if (!this._object.options.isChromium) throw new Error(`Tracing is only available in Chromium`);63 const crBrowser = this._object;64 await crBrowser.startTracing(params.page ? params.page._object : undefined, params);65 }66 async stopTracing() {67 if (!this._object.options.isChromium) throw new Error(`Tracing is only available in Chromium`);68 const crBrowser = this._object;69 const buffer = await crBrowser.stopTracing();70 return {71 binary: buffer.toString('base64')72 };73 }74} // This class implements multiplexing browser dispatchers over a single Browser instance.75exports.BrowserDispatcher = BrowserDispatcher;76class ConnectedBrowserDispatcher extends _dispatcher.Dispatcher {77 constructor(scope, browser) {78 super(scope, browser, 'Browser', {79 version: browser.version(),80 name: browser.options.name81 }, true); // When we have a remotely-connected browser, each client gets a fresh Selector instance,82 // so that two clients do not interfere between each other.83 this._type_Browser = true;84 this._contexts = new Set();85 this.selectors = void 0;86 this.selectors = new _selectors.Selectors();87 }88 async newContext(params, metadata) {89 if (params.recordVideo) params.recordVideo.dir = this._object.options.artifactsDir;90 const context = await this._object.newContext(params);91 this._contexts.add(context);92 context._setSelectors(this.selectors);93 context.on(_browserContext.BrowserContext.Events.Close, () => this._contexts.delete(context));94 if (params.storageState) await context.setStorageState(metadata, params.storageState);95 return {96 context: new _browserContextDispatcher.BrowserContextDispatcher(this._scope, context)97 };98 }99 async close() {// Client should not send us Browser.close.100 }101 async killForTests() {// Client should not send us Browser.killForTests.102 }103 async newBrowserCDPSession() {104 if (!this._object.options.isChromium) throw new Error(`CDP session is only available in Chromium`);105 const crBrowser = this._object;106 return {107 session: new _cdpSessionDispatcher.CDPSessionDispatcher(this._scope, await crBrowser.newBrowserCDPSession())108 };109 }110 async startTracing(params) {111 if (!this._object.options.isChromium) throw new Error(`Tracing is only available in Chromium`);112 const crBrowser = this._object;113 await crBrowser.startTracing(params.page ? params.page._object : undefined, params);114 }115 async stopTracing() {116 if (!this._object.options.isChromium) throw new Error(`Tracing is only available in Chromium`);117 const crBrowser = this._object;118 const buffer = await crBrowser.stopTracing();119 return {120 binary: buffer.toString('base64')121 };122 }123 async cleanupContexts() {124 await Promise.all(Array.from(this._contexts).map(context => context.close((0, _instrumentation.internalCallMetadata)())));125 }126}...
watching.js
Source:watching.js
...93 await page.tracing.start(args);94 }95 const stopTracing = async () => {96 if (isPlaywright) {97 return await context.browser().stopTracing();98 } else {99 return await page.tracing.stop();100 }101 }102 return async () => {103 const tracing = JSON.parse((await stopTracing()).toString());104 if (IS_DEBUG) {105 fs.writeFileSync(path.resolve(__dirname, './tracing.json'), JSON.stringify(tracing));106 }107 return tracing.traceEvents;108 }109};110const writeCoverage = async (page, isPlaywright) => {111 await Promise.all([112 page.coverage.startJSCoverage(),113 page.coverage.startCSSCoverage()114 ]);115 return async () => {116 const [js, css] = await Promise.all([117 page.coverage.stopJSCoverage(),...
index.js
Source:index.js
...50 // do nothing51 }52 });53 }54 stopTracing();55}56ViewModel.prototype.$watch = function(getter, callback, meta) {57 return new Observer(this, getter, callback, meta);58};59/**60 * initialize the state of ViewModel instance61 * @param {ViewModel} vm ViewModel instance62 * @param {Object} data the data to be observe63 */64function initState(vm, data) {65 startTracing(PHASE_INIT_STATE);66 startTracing(PHASE_INIT_DATA_GET_DATA);67 if (typeof data === 'function') {68 data = data.call(vm, vm);69 }70 stopTracing(); // PHASE_INIT_DATA_GET_DATA71 startTracing(PHASE_INIT_DATA_PROXY);72 Object.keys(data).forEach(key => proxy(vm, data, key));73 stopTracing(); // PHASE_INIT_DATA_PROXY74 startTracing(PHASE_INIT_DATA_OBSERVE);75 Subject.of(data);76 stopTracing(); // PHASE_INIT_DATA_OBSERVE77 stopTracing(); // PHASE_INIT_STATE78}79/**80 * proxy data81 * @param {ViewModel} target ViewModel instance82 * @param {Object} source the data to be proxy83 * @param {String} key the key to be proxy84 */85function proxy(target, source, key) {86 Object.defineProperty(target, key, {87 enumerable: false,88 configurable: true,89 get() {90 return source[key];91 },92 set(value) {93 source[key] = value;94 }95 });96}...
driver.js
Source:driver.js
...22 const driver = await createDriver({ port: 3000 })23 driver.on('status', handler)24 await driver.loadFile('test/fixtures/fast.js')25 await driver.startTracing()26 await driver.stopTracing()27 t.true(Tracing.start.calledOnce)28 t.snapshot(handler.args)29 driver.close()30})31test('collect events', async t => {32 const driver = await createDriver({ port: 3000 })33 await driver.loadFile('test/fixtures/fast.js')34 await driver.startTracing()35 await delay(0)36 await driver.stopTracing()37 t.true(Tracing.callbacks.dataCollected.calledOnce)38 t.snapshot(Tracing.callbacks.dataCollected.args)39 driver.close()...
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.tracing.start({ screenshots: true, snapshots: true });7 await page.tracing.stop({ path: 'trace.zip' });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.tracing.start({ screenshots: true, snapshots: true });16 await page.tracing.stop({ path: 'trace.zip' });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.tracing.start({ screenshots: true, snapshots: true });25 await page.tracing.stop({ path: 'trace.zip' });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.tracing.start({ screenshots: true, snapshots: true });34 await page.tracing.stop({ path: 'trace.zip' });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.tracing.start({ screenshots: true, snapshots: true });43 await page.tracing.stop({
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.tracing.start({ screenshots: true, snapshots: true });7 await page.tracing.stop({ path: 'trace.zip' });8 await browser.close();9})();10In the above code, we are using the tracing.stop() method of Playwright’s internal API to stop the tracing. The tracing.stop() method takes
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.tracing.start({ screenshots: true, snapshots: true });7 await page.tracing.stop({ path: 'trace.zip' });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.tracing.start({ screenshots: true, snapshots: true });16 await page.tracing.stop({ path: 'trace2.zip' });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.tracing.start({ screenshots: true, snapshots: true });25 await page.tracing.stop({ path: 'trace3.zip' });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.tracing.start({ screenshots: true, snapshots: true });34 await page.tracing.stop({ path: 'trace4.zip' });35 await browser.close();36})();37const { chromium } = require('playwright');38(async () => {39 const browser = await chromium.launch({ headless: false });40 const context = await browser.newContext();41 const page = await context.newPage();
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.tracing.start({ screenshots: true, snapshots: true });7 await page.tracing.stop();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.tracing.start({ screenshots: true, snapshots: true });16 await page.tracing.stop();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.tracing.start({ screenshots: true, snapshots: true });25 await page.tracing.stop();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.tracing.start({ screenshots: true, snapshots: true });34 await page.tracing.stop();35 await browser.close();36})();37const { chromium } = require('playwright');38(async () => {39 const browser = await chromium.launch({ headless: false });40 const context = await browser.newContext();41 const page = await context.newPage();
Using AI Code Generation
1const playwright = require('playwright');2(async () => {3 const browser = await playwright.webkit.launch();4 const context = await browser.newContext();5 const page = await context.newPage();6 await page.tracing.start({ screenshots: true, snapshots: true });7 await page.tracing.stop({ path: 'trace.zip' });8 await browser.close();9})();10const playwright = require('playwright');11(async () => {12 const browser = await playwright.webkit.launch();13 const context = await browser.newContext();14 const page = await context.newPage();15 await page.tracing.start({ screenshots: true, snapshots: true });16 await page.tracing.stop({ path: 'trace.zip' });17 await browser.close();18})();19const playwright = require('playwright');20(async () => {21 const browser = await playwright.webkit.launch();22 const context = await browser.newContext();23 const page = await context.newPage();24 await page.tracing.start({ screenshots: true, snapshots: true });25 await page.tracing.stop({ path: 'trace.zip' });26 await browser.close();27})();28const playwright = require('playwright');29(async () => {30 const browser = await playwright.webkit.launch();31 const context = await browser.newContext();32 const page = await context.newPage();33 await page.tracing.start({ screenshots: true, snapshots: true });34 await page.tracing.stop({ path: 'trace.zip' });35 await browser.close();36})();37const playwright = require('playwright');38(async () => {39 const browser = await playwright.webkit.launch();40 const context = await browser.newContext();41 const page = await context.newPage();42 await page.tracing.start({ screenshots: true, snapshots: true });43 await page.tracing.stop({ path: 'trace.zip
Using AI Code Generation
1const { chromium } = require('playwright');2(async () => {3 const browser = await chromium.launch();4 const page = await browser.newPage();5 const trace = await page.context().newTracing({ screenshots: true, snapshots: true });6 await trace.start({ screenshots: true, snapshots: true });7 await page.click('text=Get started');8 await trace.stop({ path: 'trace.zip' });9 await browser.close();10})();11const { chromium } = require('playwright');12(async () => {13 const browser = await chromium.launch();14 const page = await browser.newPage();15 await page.context().startTracing({ screenshots: true, snapshots: true });16 await page.click('text=Get started');17 await page.context().stopTracing({ path: 'trace.zip' });18 await browser.close();19})();20const { chromium } = require('playwright');21(async () => {22 const browser = await chromium.launch();23 const page = await browser.newPage();24 await page.context().startTracing({ screenshots: true, snapshots: true });25 await page.click('text=Get started');26 await page.context().stopTracing({ path: 'trace.zip' });27 await browser.close();28})();29const { chromium } = require('playwright');30(async () => {31 const browser = await chromium.launch();32 const page = await browser.newPage();33 await page.context().startTracing({ screenshots: true, snapshots: true });34 await page.click('text=Get started');35 await page.context().stopTracing({ path: 'trace.zip' });36 await browser.close();37})();38const { chromium } = require('playwright');39(async () => {40 const browser = await chromium.launch();41 const page = await browser.newPage();42 await page.context().startTracing({ screenshots: true, snapshots: true });43 await page.click('text
Using AI Code Generation
1const { chromium } = require('playwright');2const { stopTracing } = require('playwright/lib/server/chromium');3(async () => {4 const browser = await chromium.launch({headless: false});5 const context = await browser.newContext();6 const page = await context.newPage();7 await page.screenshot({ path: 'google.png' });8 await stopTracing(page);9 await browser.close();10})();11const { chromium } = require('playwright');12const { stopTracing } = require('playwright/lib/server/chromium');13(async () => {14 const browser = await chromium.launch({headless: false});15 const context = await browser.newContext();16 const page = await context.newPage();17 await page.screenshot({ path: 'google.png' });18 await stopTracing(page);19 await browser.close();20})();21const { chromium } = require('playwright');22const { stopTracing } = require('playwright/lib/server/chromium');23(async () => {24 const browser = await chromium.launch({headless: false});25 const context = await browser.newContext();26 const page = await context.newPage();27 await page.screenshot({ path: 'google.png' });28 await stopTracing(page);29 await browser.close();30})();31const { chromium } = require('playwright');32const { stopTracing } = require('playwright/lib/server/chromium');33(async () => {34 const browser = await chromium.launch({headless: false});35 const context = await browser.newContext();36 const page = await context.newPage();37 await page.screenshot({ path: 'google.png' });38 await stopTracing(page);39 await browser.close();40})();41const { chromium } = require('playwright');42const { stopTracing } = require('playwright/lib/server/chromium');43(async () => {44 const browser = await chromium.launch({headless: false});
Using AI Code Generation
1const playwright = require('playwright');2const { trace } = require('playwright/lib/server/trace/recorder');3const { chromium } = require('playwright');4const fs = require('fs');5(async () => {6 const browser = await chromium.launch({ headless: false });7 const context = await browser.newContext();8 const page = await context.newPage();9 await page.fill('input[name="q"]', 'Hello world');10 await page.click('input[value="Google Search"]');11 await page.waitForSelector('text=Hello world');12 await page.screenshot({ path: 'example.png' });13 const trace = await context.tracing.stop({ path: 'trace.zip' });14 await browser.close();15})();16const playwright = require('playwright');17const { trace } = require('playwright/lib/server/trace/recorder');18const { chromium } = require('playwright');19const fs = require('fs');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.fill('input[name="q"]', 'Hello world');25 await page.click('input[value="Google Search"]');26 await page.waitForSelector('text=Hello world');27 await page.screenshot({ path: 'example.png' });28 const trace = await context.tracing.stop({ path: 'trace.zip' });29 await browser.close();30})();31const playwright = require('playwright');32const { trace } = require('playwright/lib/server/trace/recorder');33const { chromium } = require('playwright');34const fs = require('fs');35(async () => {36 const browser = await chromium.launch({ headless: false });37 const context = await browser.newContext();38 const page = await context.newPage();39 await page.fill('input[name="q"]', 'Hello world');40 await page.click('input[value="Google Search"]');41 await page.waitForSelector('text=Hello world');42 await page.screenshot({ path: 'example.png' });
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.
Run Playwright Internal automation tests on LambdaTest cloud grid
Perform automation testing on 3000+ real desktop and mobile devices online.
Try LambdaTest Now !!
Get 100 minutes of automation test minutes FREE!!
Was this article helpful?
