What browsers does Playwright support, and how can you test across multiple browsers simultaneously?

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Playwright supports multiple modern browsers, including:

1. Chromium: The open-source project behind Google Chrome, Microsoft Edge, and other browsers.

2. Firefox: The open-source web browser developed by Mozilla.

3. Web Kit: The engine behind Safari, enabling testing on macOS and iOS.

Playwright allows for cross-browser testing using a unified API, making it easy to interact with these browsers without needing separate configurations for each. It also supports running tests across different browsers simultaneously, which is particularly useful for parallel execution and reducing overall testing time.

To test across multiple browsers simultaneously in Playwright, you can leverage Playwright’s parallel execution feature, combined with worker threads or test runners like Jest or Mocha. Here's how you can configure it:

1. Install Playwright and set up browsers:

2. Test across multiple browsers:

This approach runs the tests on Chromium, Firefox, and WebKit simultaneously. Playwright's API is designed to handle these scenarios efficiently, ensuring smooth parallel execution.

For more advanced parallelism, Playwright Test (its built-in test runner) can be used to distribute tests across multiple workers.

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