Enforce safe Go refactoring with characterization tests before behavior changes.
npx skills add https://github.com/vndee/engineering-skills --skill go-refactor
Please help me install this Agent Skill. Skill: go-refactor Source: https://github.com/vndee/engineering-skills/tree/main/.claude/skills/go-refactor Command: npx skills add https://github.com/vndee/engineering-skills --skill go-refactor
Safe refactoring patterns and performance optimization for Go backends. Always characterize before changing.
Write characterization tests for an existing Go project before starting any refactor.
High-intent search queries and answers about installing and using this skill.
To refactor Go backends safely, write characterization tests first to capture current behavior, then change the code structure while enforcing the dependency rule to prevent unintended behavior changes.
Characterization tests in Go capture the existing behavior of a codebase before refactoring. You need them before restructuring legacy code to ensure performance tuning or architecture changes do not alter outputs.
Yes, this refactoring approach applies to Go/Fiber backend projects, enforcing the dependencies inward rule to maintain clean architecture boundaries during legacy cleanup and restructuring.
The best way to start performance tuning a legacy Go codebase is to establish characterization tests, apply safe refactoring practices, and then use profiling practices to guide optimization without breaking behavior.
You need to write tests before refactoring because characterization tests lock in the current behavior, ensuring that structural changes, such as moving handlers to domain interfaces, preserve the original functionality.
Yes, a primary use case is restructuring a handler to use domain interfaces. By relying on characterization tests and enforcing the dependency rule, you can safely refactor the handler while preserving its behavior.
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