tdd
Test-driven development with red-green-refactor loops built around vertical slices (tracer bullets), not horizontal layers. Use when asked to "use TDD", "write test-first", "red-green-refactor", "build this with tests", or whenever a feature has a clear observable contract and would benefit from tests that outlive refactors. Complements the bundled test and add-tests skills — use this for the discipline, use those for the mechanics.
72
87%
Does it follow best practices?
Run evals on this skill
Adds up to 20 points to the overall score
View guide
Passed
No findings from the security scan
Loading evals
- Repository
- gsd-build/gsd-2
- Commit
33c00aa
Is this your skill?
If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.