How to use stopTracing method in Playwright Internal

Best JavaScript code snippet using playwright-internal

trace.js

Source: trace.js Github

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...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 }...

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LogData.js

Source: LogData.js Github

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...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 */​...

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browserDispatcher.js

Source: browserDispatcher.js Github

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...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}...

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watching.js

Source: watching.js Github

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...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(),...

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index.js

Source: index.js Github

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...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}...

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driver.js

Source: driver.js Github

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...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()...

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Using AI Code Generation

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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({

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Using AI Code Generation

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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

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Using AI Code Generation

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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();

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Using AI Code Generation

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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();

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Using AI Code Generation

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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

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Using AI Code Generation

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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

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Using AI Code Generation

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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});

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Using AI Code Generation

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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' });

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StackOverFlow community discussions

Questions
Discussion

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

firefox browser does not start in playwright

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

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

Running Playwright in Azure Function

firefox browser does not start in playwright

This question is quite close to a "need more focus" question. But let's try to give it some focus:

Does Playwright has access to the cPicker object on the page? Does it has access to the window object?

Yes, you can access both cPicker and the window object inside an evaluate call.

Should I trigger the events from the HTML file itself, and in the callbacks, print in the DOM the result, in some dummy-element, and then infer from that dummy element text that the callbacks fired?

Exactly, or you can assign values to a javascript variable:

const cPicker = new ColorPicker({
  onClickOutside(e){
  },
  onInput(color){
    window['color'] = color;
  },
  onChange(color){
    window['result'] = color;
  }
})

And then

it('Should call all callbacks with correct arguments', async() => {
    await page.goto(`http://localhost:5000/tests/visual/basic.html`, {waitUntil:'load'})

    // Wait until the next frame
    await page.evaluate(() => new Promise(requestAnimationFrame))

    // Act
   
    // Assert
    const result = await page.evaluate(() => window['color']);
    // Check the value
})
https://stackoverflow.com/questions/65477895/jest-playwright-test-callbacks-of-event-based-dom-library

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