Advanced Playwright Techniques for Flawless Testing

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Playwright enables reliable end-to-end testing for modern web apps. It supports Chromium, WebKit, and firefox for testing on Windows, Linux, and macOS, locally or on CI, in either TypeScript/JavaScript, Python, .NET and Java.

In this talk let's explore some advanced Playwright capabilities and uncover a range of features and tips and tricks that you may not know about from project dependencies to API mocking, testing time and more.

This talk has been presented at JSNation US 2024, check out the latest edition of this JavaScript Conference.

FAQ

Playwright supports multiple languages including JavaScript, TypeScript, Python, Java, and .NET.

Advanced techniques include using locators for auto-waiting and retryability, annotations for test reporting, and test steps for organizing complex tests.

Playwright can handle dynamic content through API mocking, which allows you to mock API responses to test dynamic elements like ratings on a static page.

Playwright's assertions auto-retry, reducing test flakiness and ensuring more reliable test outcomes.

Playwright allows you to mock and manually control the flow of time in tests, enabling you to test time-dependent features without waiting in real time.

You can find more resources and support via the Playwright Discord with over 14,000 members, the Playwright documentation, YouTube channel, and Twitter. Additionally, you can contact Debbie O'Brien at Microsoft or explore her website.

Playwright improves test efficiency by running tests in parallel by default, supporting sharding across multiple machines, and providing tools for faster test creation and management.

Playwright is beneficial because it auto-waits for elements, retries assertions, supports iFrames and Shadow DOM, runs tests in parallel, and offers powerful tooling like VS Code extension, CodeGen, and HTML reports.

Playwright is a reliable end-to-end testing tool for modern web apps that works on any browser and any platform with one API. It ensures tests run in full isolation and quickly.

UI mode in Playwright is a feature that allows you to visually manage and debug tests, offering a user-friendly interface to run and inspect tests.

Debbie O'Brien
Debbie O'Brien
20 min
21 Nov, 2024

Comments

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  • Va Da
    Va Da
    P4
    I wish Jest had annotations and test.step()!
Video Summary and Transcription
Hi, everyone. My name is Debbie O'Brien, Principal Technical PM at Microsoft. I'm focusing on Playwright, a reliable end-to-end testing tool for modern web apps. It works on any browser and platform, has powerful tooling, and tests run fast. Advanced techniques include UI mode, HTML reports, and trace viewer. Use annotations in Playwright to enhance reporting and test organization. Mocking API responses and external links is possible with Playwright. You can also test date and time by setting a fixed fake time. Playwright offers CLI test options and has a vibrant community. Join the Playwright Discord server and follow the important docs and YouTube channel for more information.
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