Test the Diff, Not the App

This story was originally published on HackerNoon at: https://hackernoon.com/test-the-diff-not-the-app. Dynamic PR testing verifies code changes before merge by testing new behavior against a live application, complementing regression suites and AI code review. Check more stories related to undefined at: https://hackernoon.com/c/undefined. You can also check exclusive content about #ai-testing, #agentic-testing, #software-testing, #test-automation, #regression-testing, #testing-pull-requests, #ai-code-review, #good-company, and more. This story was written by: @qatech. Learn more about this writer by checking @qatech's about page, and for more stories, please visit hackernoon.com. A green test suite doesn’t always mean a safe release. Dynamic PR testing focuses on what actually changed, catching new risks before they reach production — while a small regression suite keeps the critical flows covered.