Beyond Code Coverage: Functionality Testing with Playwright — Marlene Mhangami, Microsoft

AI-driven development requires a disciplined approach to maintain productivity, as unchecked AI usage often amplifies code entropy rather than efficiency. While GitHub data indicates a massive surge in AI-authored commits, true productivity gains hinge on maintaining clean codebases through rigorous test coverage, documentation, and modularity. Adopting a red-green Test-Driven Development (TDD) methodology allows developers to leverage AI for rapid test generation while retaining control over code quality during the refactoring phase. Utilizing frameworks like Playwright enables the automation of behavioral tests that simulate real user interactions, preventing the common pitfall of self-affirming unit tests that fail to validate actual system functionality. By standardizing these practices and integrating agents into the development workflow, teams can ensure that AI tools effectively enhance software functionality without compromising long-term maintainability or system integrity.