Answer

Introducing Playwright

Playwright is a Node.js library that you can use as a framework for automating web browsers. It's a powerful tool for writing end-to-end tests that simulate user interactions with your web application.

Key Features

Playwright supports multiple browsers including Chromium, Firefox, and WebKit. It can work in both headless and non-headless modes. Headless mode allows you to run your tests without launching an actual browser window, which is useful for running tests in CI/CD pipelines or on servers without graphical interfaces.

import { test } from '@playwright/test';

test('headless test', async ({ page }) => {
  await page.goto('https://ray.run/');
  // your test code here
});

Playwright provides APIs for interacting with web pages and their components. For example, the frame API lets you navigate between frames within a page, and the elementHandle API lets you interact with individual elements on the page.

import { test } from '@playwright/test';

test('element interaction', async ({ page }) => {
  await page.goto('https://ray.run/');
  const elementHandle = await page.$('selector');
  // interact with the element
});

Experimental Features

Playwright includes experimental support for building components using React, Solid, Svelte or Vue3/Vue2 frameworks. This feature lets you include stylesheets and inject code into pages where components are mounted.

import { test } from '@playwright/test';

test('component testing', async ({ page }) => {
  await page.goto('https://ray.run/');
  // inject your component code here
});

If you're looking for a flexible tool for automating browser testing or building web components, Playwright is definitely worth considering. Check out Mastering Playwright Test Automation: Your Comprehensive Cheat Sheet for more tips and tricks.