.NET Rocks! Changing Testing using Playwright MCP with Debbie O'Brien
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Jun 12, 2025 Debbie O'Brien, a Principal Program Manager at Microsoft with a decade and a half in front-end development, dives into the innovative features of Playwright MCP. She explains how AI can revolutionize web testing, like using LLMs to suggest and generate tests. The discussion also covers the transformative potential of MCP for automating test processes, enhancing user interaction simulations, and integrating with GitHub. With a humorous touch, Debbie shares real-world applications, making complex tech not just accessible, but enjoyable.
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Debbie's Playwright MCP Table Hunt
- Debbie O'Brien used Playwright MCP to find the cheapest table and shipping cost on a website automatically.
- It filled in dummy addresses and searched through options, but didn't complete the purchase.
MCP Enables Browser Control
- Playwright MCP acts as an API allowing LLMs like Copilot to control a browser.
- It opens a real browser, clicks, types, and interacts with the page like a human user.
MCP Learns Page Interaction
- MCP can explore a web page intelligently by taking a page snapshot to understand UI.
- It figured out how to activate search by clicking before typing on a complex app.
