Individual skill
test-driven-development
Use when implementing any feature or bugfix, before writing implementation code
skills/test-driven-development/SKILL.md
Source commit a6603bf9fa9acd6bf9c7cc2fa6273ad3faa1c3b6
What was checked
- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- Yes
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Network or broad shell
- Last checked
- Nov 11, 2026
These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.
Install this skill
Choose an agent in your Stack or copy a command below. Commands fetch the pinned commit and copy only this skill directory. Existing destinations are refused. Copying a command does not install anything.
An install command is unavailable: current rules, complete repository and skill scans, an eligible behavior level and a permitted license are required.
Repository context
- Repository stars (not skill ratings)
- 993
- Repository last updated
- Nov 10, 2026
- License
- MIT
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- ai-skills Repository topic
- workflows Repository topic
- skills Repository topic
- anthropic-skills Repository topic
- planning Repository topic
- superpowers Repository topic
- context-engineering Repository topic
- ui-ux-design Repository topic
- ai-agents Repository topic
- claude-code Repository topic
- writing Derived category
- testing Derived category
Files and excerpt
File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.
Browse files
SKILL.mdcore · 9,578 bytesSKILL.mdcore · 9,578 bytesSKILL.mdcore · 9,578 bytesSKILL.mdcore · 9,578 bytesSKILL.mdcore · 9,578 bytestesting-anti-patterns.mddoc · 8,251 byteswriting-good-tests.mddoc · 8,268 bytes
Read excerpt
# Test-Driven Development (TDD)
## Overview
Write the test first. Watch it fail. Write minimal code to pass.
**Core principle:** If you didn't watch the test fail, you don't know if it tests the right thing.
**Violating the letter of the rules is violating the spirit of the rules.**
## When to Use
**Always:**
- New features