Test your AI Agents with the all-new Agent to Agent Testing Platform.Learn More
How to use _expectScreenshot method in Playwright Internal
Best JavaScript code snippet using playwright-internal
page.js
Source:page.js 
...433 await _fs.default.promises.writeFile(options.path, buffer);434 }435 return buffer;436 }437 async _expectScreenshot(options) {438 var _options$screenshotOp, _options$screenshotOp2;439 const mask = (_options$screenshotOp = options.screenshotOptions) !== null && _options$screenshotOp !== void 0 && _options$screenshotOp.mask ? (_options$screenshotOp2 = options.screenshotOptions) === null || _options$screenshotOp2 === void 0 ? void 0 : _options$screenshotOp2.mask.map(locator => ({440 frame: locator._frame._channel,441 selector: locator._selector442 })) : undefined;443 const locator = options.locator ? {444 frame: options.locator._frame._channel,445 selector: options.locator._selector446 } : undefined;447 const expected = options.expected ? options.expected.toString('base64') : undefined;448 const result = await this._channel.expectScreenshot({ ...options,449 isNot: !!options.isNot,450 expected,451 locator,...
Using AI Code Generation
1const playwright = require('playwright');2const { _expectScreenshot } = require('playwright/lib/test/screenshotter');3const { toMatchImageSnapshot } = require('jest-image-snapshot');4expect.extend({ toMatchImageSnapshot });5(async () => {6 for (const browserType of ['chromium', 'firefox', 'webkit']) {7 const browser = await playwright[browserType].launch();8 const context = await browser.newContext();9 const page = await context.newPage();10 const screenshot = await _expectScreenshot({ page }, 'screenshot');11 expect(screenshot).toMatchImageSnapshot();12 await browser.close();13 }14})();15module.exports = {16};
Using AI Code Generation
1const playwright = require('playwright');2const { expect } = require('playwright');3const { test, expect } = require('@playwright/test');4test('should take screenshot', async ({ page }) => {5 await page.screenshot({ path: 'example.png' });6 await expect(page).toMatchScreenshot();7});8const { test, expect } = require('@playwright/test');9test('should take screenshot', async ({ page }) => {10 await page.screenshot({ path: 'example.png' });11 await expect(page).toMatchScreenshot();12});
Using AI Code Generation
1const { Playwright } = require('@playwright/test');2const { expect } = require('@playwright/test');3const playwright = new Playwright();4const expectScreenshot = playwright._expectScreenshot.bind(playwright);5const { expect } = require('@playwright/test');6const { test, expect } = require('@playwright/test');7const { expect } = require('@playwright/test');8const { test, expect } = require('@playwright/test');9test('screenshot', async ({ page }) => {10 await expectScreenshot(page, 'playwright-homepage');11});12const { expect } = require('@playwright/test');13const { test, expect } = require('@playwright/test');14test('screenshot', async ({ page }) => {15 await expect(page).toHaveScreenshot('playwright-homepage');16});17const { expect } = require('@playwright/test');18const { test, expect } = require('@playwright/test');19test('screenshot', async ({ page }) => {
Using AI Code Generation
1const { _expectScreenshot } = require('playwright/lib/server/supplements/recorder/recorderApp');2const { expect } = require('chai');3describe('My Test', () => {4 it('should have correct screenshot', async () => {5 await page.click('input[name="q"]');6 await page.fill('input[name="q"]', 'hello');7 await _expectScreenshot(page, 'google.png', {8 });9 });10});11const { expect } = require('chai');12const { test } = require('@playwright/test');13test.describe('My Test', () => {14 test('should have correct screenshot', async ({ page }) => {15 await page.click('input[name="q"]');16 await page.fill('input[name="q"]', 'hello');17 await expect(page).toHaveScreenshot('google.png', {18 });19 });20});21const { expect } = require('chai');22const { test } = require('@playwright/test');23test.describe('My Test', () => {24 test('should have correct screenshot', async ({ page }) => {25 await page.click('input[name="q"]');26 await page.fill('input[name="q"]', 'hello');27 await expect(page).toHaveScreenshot('google.png', {28 });29 });30});31const { expect } = require('chai');32const { test } = require('@playwright/test');33test.describe('My Test', () => {34 test('should have correct screenshot', async ({ page }) => {35 await page.click('input[name="q"]');
Using AI Code Generation
1const { Playwright } = require('playwright');2const { expect } = require('expect');3const { _expectScreenshot } = Playwright.expect;4it('should work', async ({ page, server }) => {5 await page.goto(server.PREFIX + '/grid.html');6 await _expectScreenshot(page, 'test', { threshold: 0.8 });7});8await expect(page).toMatchSnapshot();9await expect(page).toMatchTextSnapshot();10await expect(page).toMatchSnapshotWithOptions({11});12await expect(page).toMatchSnapshotWithOptions({13});14await expect(page).toMatchTextSnapshotWithOptions({15});
Using AI Code Generation
1const playwright = require('playwright');2const { browserName } = require('playwright/lib/server/browserType');3const { test, expect } = require('@playwright/test');4test('test', async ({ page }) => {5 const elementHandle = await page.$('text="Get started"');6 await page._expectScreenshot(elementHandle, 'test', {7 });8});9const { expect } = require('@playwright/test');10const { PlaywrightScreenshotTester } = require('playwright-screenshot-tester');11test('test', async ({ page }) => {12 const elementHandle = await page.$('text="Get started"');13 const screenshotTester = new PlaywrightScreenshotTester(page);14 await screenshotTester.expectScreenshot(elementHandle, 'test', {15 });16});17async expectScreenshot(18MIT © [sushantdhiman](
Using AI Code Generation
1const { _expectScreenshot } = require('@playwright/test');2(async () => {3 await _expectScreenshot({4 });5})();6const { test } = require('@playwright/test');7test('test', async ({ page }) => {8 await page.screenshot({ path: 'screenshot.png' });9});10module.exports = {11 use: {12 viewport: { width: 1280, height: 720 },13 },14 {15 use: {16 },17 },18 {19 use: {20 },21 },22 {23 use: {24 },25 },26};27### `expect(screenshot).toMatchSnapshot([options])`28- Default: `test-${testName}-${projectName}`
Using AI Code Generation
1const { _expectScreenshot } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');2expect(await _expectScreenshot(page, 'name', { timeout: 1000 })).toBe(true);3const { _expectScreenshot } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');4expect(await _expectScreenshot(page, 'name', { timeout: 1000 })).toBe(true);5const { _expectScreenshot } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');6expect(await _expectScreenshot(page, 'name', { timeout: 1000 })).toBe(true);7const { _expectScreenshot } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');8expect(await _expectScreenshot(page, 'name', { timeout: 1000 })).toBe(true);9const { _expectScreenshot } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');10expect(await _expectScreenshot(page, 'name', { timeout: 1000 })).toBe(true);11const { _expectScreenshot } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');12expect(await _expectScreenshot(page, 'name', { timeout: 1000 })).toBe(true);13const { _expectScreenshot } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');14expect(await _expectScreenshot(page, 'name', { timeout: 1000 })).toBe(true);15const { _expectScreenshot } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');16expect(await _expectScreenshot(page, 'name', { timeout: 1000 })).toBe(true);
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._expectScreenshot('example', {7 });8 await browser.close();9})();10const {chromium} = require('playwright');11describe('Example', () => {12 it('should work', async () => {13 const browser = await chromium.launch();14 const context = await browser.newContext();15 const page = await context.newPage();16 await expect(page).toMatchScreenshot('example');17 await browser.close();18 });19});20const {chromium} = require('playwright');21describe('Example', () => {22 it('should work', async () => {23 const browser = await chromium.launch();24 const context = await browser.newContext();25 const page = await context.newPage();26 await expect(page).toMatchScreenshot('example', {timeout: 10000});27 await browser.close();28 });29});30const {chromium} = require('playwright');31describe('Example', () => {32 it('should work', async () => {33 const browser = await chromium.launch();34 const context = await browser.newContext();35 const page = await context.newPage();36 await expect(page).toMatchScreenshot({timeout: 10000});37 await browser.close();38 });39});40const {chromium} = require('playwright');41describe('Example', () => {42 it('should work', async () => {43 const browser = await chromium.launch();44 const context = await browser.newContext();45 const page = await context.newPage();
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?
