Test-Driven Development
Forces Claude into strict red-green-refactor discipline.
Test report
- Verdict
- Tested · Works
- Score
- Tested
- Jun 25, 2026
- Environment
- Claude Code 2.x
Enforced red-green-refactor across a 3-feature session; Claude wrote failing tests first every time and refused to skip the cycle. Noticeably fewer regressions.
Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works
- Installs cleanly 5/5
- Triggers reliably 5/5
- Output vs. baseline 9/10
- Docs & honesty 5/5
What it does
Part of the Superpowers collection. Makes Claude write the failing test before any implementation, every time. The difference in output quality on non-trivial features is real and repeatable.
Install
/plugin marketplace add obra/superpowers-marketplace
/plugin install superpowers
Skills live in ~/.claude/skills/ (global) or .claude/skills/
(per-project). Restart Claude Code after installing.
Appears in