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Learn how to upgrade legacy applications built around outdated databases while maintaining small, understandable tests in this conference talk from Code BEAM America 2025. Discover practical patterns and experiments for writing tests faster when working with large, untested applications that were designed using 90s best practices and feature complex, spaghetti-like UML structures. Explore strategies to overcome the common tendency to skip testing in legacy systems due to overwhelming precedent and complexity. Gain insights into tooling approaches that enable you to fight upstream against technical debt, allowing you to maintain and update legacy systems with confidence while establishing sustainable testing practices for future development.
