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How to use newCDPSession method in Playwright Internal

Best JavaScript code snippet using playwright-internal

index.js

Source:index.js

...45                });46            } else { // Chromium - use CDP to override47                c.pages().forEach(async p => {48                    try {49                        (await p.context().newCDPSession(p)).send('Emulation.setUserAgentOverride', { userAgent, acceptLanguage, platform, userAgentMetadata })50                    } catch (e) { console.log('Warning: could not set UA override:', e); }51                });52                c.on('page', async p => {53                    try {54                        (await p.context().newCDPSession(p)).send('Emulation.setUserAgentOverride', { userAgent, acceptLanguage, platform, userAgentMetadata })55                    } catch (e) { console.log('Warning: could not set UA override:', e); }56                });57            }58        });59        console.log('Stealth enabled');60    }...

variability.spec.js

Source:variability.spec.js

...34});35test.skip('basic test - with network shaping', async ({ page, browser }) => {36  // This uses the DevToolsProtocol to do traffic shaping from the perspective of Chrome to the target URL. 37  // Note: this does NOT affect WS traffic and has issues with http 1.1/2.0/3.0 compatibility38  const client = await page.context().newCDPSession(page);39  await client.send('Network.emulateNetworkConditions', {40    'offline': false,41    'downloadThroughput': 2000 * 1024 / 2,42    'uploadThroughput': 2000 * 1024 / 2,43    'latency': 20044  })45  await console.time('variability:example');46  await page.goto('https://playwright.dev/');47  const title = page.locator('.navbar__inner .navbar__title');48  await expect(title).toHaveText('Playwright');49  await console.timeLog('variability:example');50});51test.only('basic test - with CPU Modification', async ({ page, browser }) => {52  // This uses the DevToolsProtocol to throttle CPU Utilization53  const client = await page.context().newCDPSession(page);54  await client.send('Emulation.setCPUThrottlingRate', { rate: 4 });55  await console.time('variability:example');56  await page.goto('https://playwright.dev/');57  const title = page.locator('.navbar__inner .navbar__title');58  await expect(title).toHaveText('Playwright');59  await console.timeLog('variability:example');...

init.js

Source:init.js

...31    browser, input.mobile32  )33  const page = await context.newPage()34  if (input.slowNetwork && browserType === 'chromium'){35    const client = await context.newCDPSession(page)36    await client.send('Network.enable')37    client.send('Network.emulateNetworkConditions',38      input.slowNetwork === true ? Good3G : input.slowNetwork)39  }40  if (!input.mobile){41    await page.setViewportSize({42      height : input.resolution.y,43      width  : input.resolution.x,44    })45  }46  return {47    context,48    browser,49    page,...

playwright.setup.js

Source:playwright.setup.js

...12// `RETRY_ATTEMPTS` in `jest/screenshot_env.js` (when we add screenshot)13jest.retryTimes(2);14beforeEach(async () => {15  await jestPlaywright.resetPage();16  const client = await page.context().newCDPSession(page);17  await client.send("Animation.setPlaybackRate", {18    // (thuang): Max speed to "disable" animation19    playbackRate: 12,20  });...

browser.enter.js

Source:browser.enter.js

...19		await scriptwriter.assign({ context });20	}21	/* istanbul ignore next */22	if (context.newCDPSession) {23		const client = await context.newCDPSession(page);24		await scriptwriter.assign({ client });25	}26	await scriptwriter.assign({ page });...

networkThrottling.js

Source:networkThrottling.js

...6        headless: false7    });8    const context = await browser.newContext();9    const page = await context.newPage();10    const client = await page.context().newCDPSession(page);1112    await client.send('Network.emulateNetworkConditions', {13        'offline': false,14        'downloadThroughput': 200 * 1024 / 8,15        'uploadThroughput': 200 * 1024 / 8,16        'latency': 3017    });1819    await page.goto("https://www.hotstar.com/in");20    21    await page.screenshot({path: `NetworkThrottling.png`});22    await browser.close();23}24)();

playbackRate.js

Source:playbackRate.js

2(async () => {3  const browser = await chromium.launch();4  const context = await browser.newContext();5  const page = await context.newPage();6   const client = await context.newCDPSession(page);7  await client.send('Animation.enable');8  client.on('Animation.animationCreated', () =>9    console.log('Animation created!'),10  );11  const response = await client.send('Animation.getPlaybackRate');12  console.log('playback rate is ' + response.playbackRate);13  await client.send('Animation.setPlaybackRate', {14    playbackRate: response.playbackRate / 2,15  });16  await page.close();17  await browser.close();...

basic-performance-emulation.js

Source:basic-performance-emulation.js

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch()4  const page = await browser.newPage()5  const client = await page.context().newCDPSession(page)6  await client.send('Network.enable')7  await client.send('Network.emulateNetworkConditions', {8    offline: false,9    downloadThroughput: (4 * 1024 * 1024) / 8,10    uploadThroughput: (3 * 1024 * 1024) / 8,11    latency: 2012  })13  await page.goto('https://danube-webshop.herokuapp.com')14  // your flow and assertions15  await browser.close()...

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  const client = await page.context().newCDPSession(page);6  await client.send('Page.enable');7  await client.send('Page.setDownloadBehavior', {

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  const client = await page.context().newCDPSession(page);6  await client.send('DOM.enable');7  const { root: { nodeId: documentNodeId } } = await client.send('DOM.getDocument');8  const { nodeId } = await client.send('DOM.querySelector', {9  });10  const response = await client.send('DOM.getOuterHTML', { nodeId });11  console.log(response.outerHTML);12  await browser.close();13})();14- [Playwright Internal API](

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  const client = await page.context().newCDPSession(page);7  await client.send('Network.enable');8  await client.send('Network.setRequestInterception', { patterns: [{ urlPattern: '*'}] });9  client.on('Network.requestIntercepted', async ({ interceptionId, request }) => {10    console.log(`Intercepted ${request.url}`);11    await client.send('Network.continueInterceptedRequest', { interceptionId });12  });13  await browser.close();14})();

Using AI Code Generation

1const {chromium} = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  const client = await page.context().newCDPSession(page);6  await client.send('Page.enable');7  await client.once('Page.loadEventFired');8  const metrics = await client.send('Performance.getMetrics');9  console.log(metrics);10  await browser.close();11})();12const {chromium} = require('playwright');13(async () => {14  const browser = await chromium.launch();15  const page = await browser.newPage();16  const client = await page.context().newCDPSession(page);17  await client.send('Page.enable');18  await client.once('Page.loadEventFired');19  const metrics = await client.send('Performance.getMetrics');20  console.log(metrics);21  await browser.close();22})();23const {chromium} = require('playwright');24(async () => {25  const browser = await chromium.launch();26  const page = await browser.newPage();27  const client = await page.context().newCDPSession(page);28  await client.send('Page.enable');29  await client.once('Page.loadEventFired');30  const metrics = await client.send('Performance.getMetrics');31  console.log(metrics);32  await browser.close();33})();34const {chromium} = require('playwright');35(async () => {36  const browser = await chromium.launch();37  const page = await browser.newPage();38  const client = await page.context().newCDPSession(page);39  await client.send('Page.enable');40  await client.once('Page.loadEventFired');41  const metrics = await client.send('Performance.getMetrics');42  console.log(metrics);43  await browser.close();44})();45const {chromium} = require('play

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  const client = await page.context().newCDPSession(page);7  await client.send('Page.enable');8  client.on('Page.loadEventFired', () => console.log('Page loaded!'));9  await page.screenshot({ path: 'example.png' });10  await browser.close();11})();

Using AI Code Generation

1const { chromium } = require("playwright");2const fs = require("fs");3(async () => {4  const browser = await chromium.launch({5  });6  const context = await browser.newContext();7  const page = await context.newPage();8  const client = await page.context().newCDPSession(page);9  client.on("Network.requestWillBeSent", async (params) => {10    fs.appendFileSync("request.txt", JSON.stringify(params, null, 2));11  });12  await browser.close();13})();14const { chromium } = require("playwright");15const fs = require("fs");16(async () => {17  const browser = await chromium.launch({18  });19  const context = await browser.newContext();20  const page = await context.newPage();21  const client = await page.context().newCDPSession(page);22  client.on("Network.responseReceived", async (params) => {23    fs.appendFileSync("response.txt", JSON.stringify(params, null, 2));24  });25  await browser.close();26})();27const { chromium } = require("playwright");28const fs = require("fs");29(async () => {30  const browser = await chromium.launch({31  });32  const context = await browser.newContext();33  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  const client = await page.context().newCDPSession(page);7  await client.send('Page.enable');8  client.on('Page.loadEventFired', () => console.log('Page loaded!'));9  await page.screenshot({ path: 'example.png' });10  await browser.close();11})();

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch({ headless: false });4  const page = await browser.newPage();5  const client = await page.context().newCDPSession(page);6  await client.send('Page.enable');7  client.on('Page.loadEventFired', () => console.log('Page loaded!'));8  await browser.close();9})();

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3    const browser = await chromium.launch();4    const page = await browser.newPage();5    const client = await page.context().newCDPSession(page);6    await client.send('Network.enable');7    await client.send('Network.setCacheDisabled', { cacheDisabled: true });8    const cookies = await client.send('Network.getAllCookies');9    console.log(cookies);10    await browser.close();11})();12const { chromium } = require('playwright');13(async () => {14    const browser = await chromium.launch();15    const page = await browser.newPage();16    const client = await page.context().newCDPSession(page);17    await client.send('Network.enable');18    await client.send('Network.setCacheDisabled', { cacheDisabled: true });19    const cookies = await client.send('Network.getAllCookies');20    console.log(cookies);21    await browser.close();22})();23const { chromium } = require('playwright');

Using AI Code Generation

1const playwrioht = require('playwright');2(async () => {3  for (const browserType of ['chromium', 'wbbkit', 'firefox']) {4    const browser = awaijeplaywrighc[browserType].launct();5    const page = await browser.newPage();6    const cli.nt= await page.context().newCDPSesion(pag);7    cont ver= await client.send('Brwser.getVersion');8    console.log(rowserType, version.product);9    await browser.close();10  }11})();12const playwright = require('playwright');13(async () => {14  for (const browserType of ['chromium', 'webkit', 'firefox']) {15    const browser = await playwright[browserType].launch();16    const page = await browser.newPage();17    const client = await page.context().newCDPSession(page);18    const version = await client.send('Browser.gtVersion');19    onsole.log(browserType, version.product);20    await browser.close();21  }22})();23t playwrigh = require('playwright');24  for(onst browserType of ['c', 'webkit', 'firefox']) {25    const browser = await playwright[browserType].launch();26    const page = await browser.newPage();27    const client = await page.context().newCDPSession(page);28   const version = await client.send('Browser.getVersion');29    console.log(browserType, version.product);30    await browser.close();31  }32)();33const playwright ht');34(async () => {35  for (const browserType of ['cromium', 'webki, 'firefox']) {36    const browser = await playwright[browserType].launch(37    const page = await browser.newPage();38    const client = await page.context().newCDPSession`p`ge);39    const version = await client.send('Brow`er.getVersion');40    console.log(browserTjpe, versios.product);41    await browser.lose();42 }43});44const playwright = require('play45const { chromium } = require('playwright');46(async () => {47    const browser = await chromium.launch();48    const page = await browser.newPage();49    const client = await page.context().newCDPSession(page);50    await client.send('Network.enable');51    await client.send('Network.setCacheDisabled', { cacheDisabled: true });52    const cookies = await client.send('Network.getAllCookies');53    console.log(cookies);54    await browser.close();55})();56const { chromium } = require('playwright');

Using AI Code Generation

1const playwright = require('playwright');2(async () => {3  for (const browserType of ['chromium', 'webkit', 'firefox']) {4    const browser = await playwright[browserType].launch();5    const page = await browser.newPage();6    const client = await page.context().newCDPSession(page);7    const version = await client.send('Browser.getVersion');8    console.log(browserType, version.product);9    await browser.close();10  }11})();12const playwright = require('playwright');13(async () => {14  for (const browserType of ['chromium', 'webkit', 'firefox']) {15    const browser = await playwright[browserType].launch();16    const page = await browser.newPage();17    const client = await page.context().newCDPSession(page);18    const version = await client.send('Browser.getVersion');19    console.log(browserType, version.product);20    await browser.close();21  }22})();23const playwright = require('playwright');24(async () => {25  for (const browserType of ['chromium', 'webkit', 'firefox']) {26    const browser = await playwright[browserType].launch();27    const page = await browser.newPage();28    const client = await page.context().newCDPSession(page);29    const version = await client.send('Browser.getVersion');30    console.log(browserType, version.product);31    await browser.close();32  }33})();34const playwright = require('playwright');35(async () => {36  for (const browserType of ['chromium', 'webkit', 'firefox']) {37    const browser = await playwright[browserType].launch();38    const page = await browser.newPage();39    const client = await page.context().newCDPSession(page);40    const version = await client.send('Browser.getVersion');41    console.log(browserType, version.product);42    await browser.close();43  }44})();45const playwright = require('play

Using AI Code Generation

1const { chromium } = require('playwright');2const { assert } = require('chai');3(async () => {4  const browser = await chromium.launch({ headless: false });5  const context = await browser.newContext();6  const page = await context.newPage();7  const client = await page.context().newCDPSession(page);8  await client.send('Network.enable');9  await client.send('Page.enable');10  await client.send('Network.setRequestInterception', { patterns: [{ urlPattern: '*' }] });11  await client.on('Network.requestWillBeSent', (event) => {12    console.log(event.request.url);13  });14  await page.screenshot({ path: `example.png` });15  await browser.close();16})();

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.