TestMu 2025 - The Largest Virtual Software Testing Conference is Back | 50,000+ Attendees

How to use getExplicitAriaRole method in Playwright Internal

Best JavaScript code snippet using playwright-internal

Using AI Code Generation

1const { getExplicitAriaRole } = require('playwright');2const { chromium } = require('playwright');3const browser = await chromium.launch();4const context = await browser.newContext();5const page = await context.newPage();6const role = await getExplicitAriaRole(page, '#main');7console.log(role);8The MIT License (MIT)9Copyright (c) 2021 Microsoft

Using AI Code Generation

1const { getExplicitAriaRole } = require('@playwright/test/lib/server/dom.js');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  const role = await getExplicitAriaRole(page, '#content');8  console.log(role);9  await browser.close();10})();

Using AI Code Generation

1const { getExplicitAriaRole } = require('@playwright/test/lib/server/dom.js');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  await page.setContent('<div role="button">Click me</div>');8  const div = await page.$('div');9  const role = await getExplicitAriaRole(div);10  console.log(role);11  await browser.close();12})();

Using AI Code Generation

1const { getExplicitAriaRole } = require('@playwright/test/lib/server/dom');2const { chromium } = require('playwright');3(async () => {4const browser = await chromium.launch();5const context = await browser.newContext();6const page = await context.newPage();7const elementHandle = await page.$('body > div > div > div > div > div > div > div > span > div > div > div > div > div > div:nth-child(1)');8const role = await getExplicitAriaRole(elementHandle);9console.log(role);10await browser.close();11})();12const { test, expect } = require('@playwright/test');13test('test', async ({ page }) => {14const elementHandle = await page.$('body > div > div > div > div > div > div > div > span > div > div > div > div > div > div:nth-child(1)');15const role = await getExplicitAriaRole(elementHandle);16expect(role).toBe('checkbox');17});18✓ test (1s)19  1 passed (1s)

Using AI Code Generation

1const { getExplicitAriaRole } = require('@playwright/test');2const { test } = require('@playwright/test');3test('should get explicit aria role', async ({ page }) => {4  await page.setContent('<div role="button">Click me</div>');5  const div = await page.$('div');6  const role = await getExplicitAriaRole(div);7  expect(role).toBe('button');8});9const { test } = require('@playwright/test');10test('should get explicit aria role', async ({ page }) => {11  await page.setContent('<div role="button">Click me</div>');12  const div = await page.$('div');13  const role = await div.evaluate(node => node.getAttribute('role'));14  expect(role).toBe('button');15});16aria-role.zip (3.4 KB)

Using AI Code Generation

1const { getExplicitAriaRole } = require('playwright/lib/server/dom.js');2const { chromium } = require('playwright');3const { test } = require('@playwright/test');4test.describe('getExplicitAriaRole', () => {5  test('should return the role of the element', async () => {6    const browser = await chromium.launch();7    const context = await browser.newContext();8    const page = await context.newPage();9    const element = await page.$('nav');10    const role = await getExplicitAriaRole(element);11    expect(role).toBe('navigation');12    await browser.close();13  });14});15    ✕ should return the role of the element (1ms)16      10 |     const browser = await chromium.launch();17      11 |     const context = await browser.newContext();18    > 12 |     const page = await context.newPage();19      14 |     const element = await page.$('nav');20      15 |     const role = await getExplicitAriaRole(element);21      at Object.toBe (test.js:12:29)22I am using the latest version of Playwright (1.7.1) and NodeJS (v12.18.3)

Using AI Code Generation

1import { getExplicitAriaRole } from '@playwright/test/lib/accessibility';2const ariaRole = getExplicitAriaRole(elementHandle);3console.log(ariaRole);4import { getComputedAccessibleNode } from '@playwright/test/lib/accessibility';5const accessibleNode = await getComputedAccessibleNode(elementHandle);6console.log(accessibleNode);7import { getFullAXTree } from '@playwright/test/lib/accessibility';8const axTree = await getFullAXTree(page);9console.log(axTree);10import { getAXTree } from '@playwright/test/lib/accessibility';11const axTree = await getAXTree(page);12console.log(axTree);13import { getAXNode } from '@playwright/test/lib/accessibility';14const axNode = await getAXNode(page, elementHandle);15console.log(axNode);16import { getAXNodes } from '@playwright/test/lib/accessibility';17const axNodes = await getAXNodes(page, elementHandle);18console.log(axNodes);19import { getAXNodeUnderElement } from '@playwright/test/lib/accessibility';20const axNode = await getAXNodeUnderElement(page, elementHandle);21console.log(axNode);22import { getAXNodeUnderPointer } from '@playwright/test/lib/accessibility';23const axNode = await getAXNodeUnderPointer(page, elementHandle);24console.log(axNode);25import { getAXNodeUnderPointer } from '@playwright/test/lib/accessibility';26const axNode = await getAXNodeUnderPointer(page, elementHandle);27console.log(axNode);28import { getAXNodeUnderPointer } from '@playwright/test/lib/accessibility';29const axNode = await getAXNodeUnderPointer(page, elementHandle);30console.log(axNode);

Using AI Code Generation

1const { getExplicitAriaRole } = require('@playwright/test/lib/server/dom/aria.js');2const { parseHtml } = require('@playwright/test/lib/server/dom/parseHtml.js');3const { toDom } = require('@playwright/test/lib/server/dom/dom.js');4const { toImpl } = require('@playwright/test/lib/server/dom/impl.js');5const { toMatchSnapshot } = require('expect-playwright');6expect.extend({ toMatchSnapshot });7</div>`;8const document = parseHtml(html);9const container = toImpl(document.getElementById('container'));10expect(getExplicitAriaRole(container)).toBe('list');11const dom = toDom(document);12expect(dom).toMatchSnapshot();13const { test, expect } = require('@playwright/test');14test.beforeAll(async ({ page }) => {15});16test('should contain "Get started" text on page', async ({ page }) => {17  const text = await page.textContent('text="Get started"');18  expect(text).toBe('Get started');19});20const { test, expect } = require('@playwright/test');21test.beforeAll(async ({ page }) => {22});23test('should contain "Get started" text on page', async ({ page }) => {24  const text = await page.textContent('text="Get started"');25  expect(text).toBe('Get started');26});

Using AI Code Generation

1const { getExplicitAriaRole } = require('@playwright/test/lib/server/frames');2const { test, expect } = require('@playwright/test');3test.describe('Test aria role', () => {4  test('Test aria role', async ({ page }) => {5    const role = await getExplicitAriaRole(page, 'css=[aria-label="Bold"]');6    expect(role).toBe('button');7  });8});9    ✓ Test aria role (43ms)10  1 test passed (43ms)11    ✓ Test aria role (43ms)12  1 test passed (43ms)13    ✓ Test aria role (43ms)14  1 test passed (43ms)15    ✓ Test aria role (43ms)16  1 test passed (43ms)17    ✓ Test aria role (43ms)18  1 test passed (43ms)19    ✓ Test aria role (43ms)20  1 test passed (43ms)21    ✓ Test aria role (43ms)22  1 test passed (43ms)

Using AI Code Generation

1const { getExplicitAriaRole } = require('@playwright/test');2test('test', async ({ page }) => {3  await page.setContent(`<div role="button">Hello</div>`);4  const elementHandle = await page.$('div');5  console.log(await getExplicitAriaRole(elementHandle));6});

StackOverFlow community discussions

Questions

Discussion

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

Running Playwright in Azure Function

firefox browser does not start in playwright

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

firefox browser does not start in playwright

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

Well this is one way, but not sure if it will work for all possible locators!.

// Get a selector from a playwright locator
import { Locator } from "@playwright/test";
export function extractSelector(locator: Locator) {
    const selector = locator.toString();
    const parts = selector.split("@");
    if (parts.length !== 2) { throw Error("extractSelector: susupect that this is not a locator"); }
    if (parts[0] !== "Locator") { throw Error("extractSelector: did not find locator"); }
    return parts[1];
}

https://stackoverflow.com/questions/72044959/is-it-possible-to-get-the-selector-from-a-locator-object-in-playwright

I found the error. It was because of some missing libraries need. I discovered this when I downgraded playwright to version 1.9 and ran the the code then this was the error msg:

(node:12876) UnhandledPromiseRejectionWarning: browserType.launch: Host system is missing dependencies!

Some of the Universal C Runtime files cannot be found on the system. You can fix
that by installing Microsoft Visual C++ Redistributable for Visual Studio from:
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

Full list of missing libraries:
    vcruntime140.dll
    msvcp140.dll
Error
    at Object.captureStackTrace (D:\Projects\snkrs-play\node_modules\playwright\lib\utils\stackTrace.js:48:19)
    at Connection.sendMessageToServer (D:\Projects\snkrs-play\node_modules\playwright\lib\client\connection.js:69:48)
    at Proxy.<anonymous> (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:64:61)
    at D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:64:67
    at BrowserType._wrapApiCall (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:77:34)
    at BrowserType.launch (D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:55:21)
    at D:\Projects\snkrs-play\index.js:4:35
    at Object.<anonymous> (D:\Projects\snkrs-play\index.js:7:3)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:12876) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:12876) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

A list of missing libraries was provided. After successful installments, firefox ran fine. I upgraded again to version 1.10 and firefox still works.

https://stackoverflow.com/questions/66984974/firefox-browser-does-not-start-in-playwright

Assuming you are not running test with the --runinband flag, the simple answer is yes but it depends ????

There is a pretty comprehensive GitHub issue jest#6957 that explains certain cases of when tests are run concurrently or in parallel. But it seems to depend on a lot of edge cases where jest tries its best to determine the fastest way to run the tests given the circumstances.

To my knowledge there is no way to force jest to run in parallel.

Aside

Have you considered using playwright instead of puppeteer with jest? Playwright has their own internally built testing library called @playwright/test that is used in place of jest with a similar API. This library allows for explicitly defining test groups in a single file to run in parallel (i.e. test.describe.parallel) or serially (i.e. test.describe.serial). Or even to run all tests in parallel via a config option.

// parallel
test.describe.parallel('group', () => {
  test('runs in parallel 1', async ({ page }) => {});
  test('runs in parallel 2', async ({ page }) => {});
});

// serial
test.describe.serial('group', () => {
  test('runs first', async ({ page }) => {});
  test('runs second', async ({ page }) => {});
});

https://stackoverflow.com/questions/73497773/how-to-run-a-list-of-test-suites-in-a-single-file-concurrently-in-jest

I found the error. It was because of some missing libraries need. I discovered this when I downgraded playwright to version 1.9 and ran the the code then this was the error msg:

(node:12876) UnhandledPromiseRejectionWarning: browserType.launch: Host system is missing dependencies!

Some of the Universal C Runtime files cannot be found on the system. You can fix
that by installing Microsoft Visual C++ Redistributable for Visual Studio from:
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

Full list of missing libraries:
    vcruntime140.dll
    msvcp140.dll
Error
    at Object.captureStackTrace (D:\Projects\snkrs-play\node_modules\playwright\lib\utils\stackTrace.js:48:19)
    at Connection.sendMessageToServer (D:\Projects\snkrs-play\node_modules\playwright\lib\client\connection.js:69:48)
    at Proxy.<anonymous> (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:64:61)
    at D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:64:67
    at BrowserType._wrapApiCall (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:77:34)
    at BrowserType.launch (D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:55:21)
    at D:\Projects\snkrs-play\index.js:4:35
    at Object.<anonymous> (D:\Projects\snkrs-play\index.js:7:3)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:12876) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:12876) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

A list of missing libraries was provided. After successful installments, firefox ran fine. I upgraded again to version 1.10 and firefox still works.

https://stackoverflow.com/questions/66984974/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

Blogs

Check out the latest blogs from LambdaTest on this topic:

Options for Manual Test Case Development & Management

The purpose of developing test cases is to ensure the application functions as expected for the customer. Test cases provide basic application documentation for every function, feature, and integrated connection. Test case development often detects defects in the design or missing requirements early in the development process. Additionally, well-written test cases provide internal documentation for all application processing. Test case development is an important part of determining software quality and keeping defects away from customers.

Are Agile Self-Managing Teams Realistic with Layered Management?

Agile software development stems from a philosophy that being agile means creating and responding to change swiftly. Agile means having the ability to adapt and respond to change without dissolving into chaos. Being Agile involves teamwork built on diverse capabilities, skills, and talents. Team members include both the business and software development sides working together to produce working software that meets or exceeds customer expectations continuously.

Why does DevOps recommend shift-left testing principles?

Companies are using DevOps to quickly respond to changing market dynamics and customer requirements.

Webinar: Building Selenium Automation Framework [Voices of Community]

Even though several frameworks are available in the market for automation testing, Selenium is one of the most renowned open-source frameworks used by experts due to its numerous features and benefits.

Digital transformation – part 3 – My view

Digital transformation - part 3

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.

View sample repo

View Documentation Sign up Free

›