a5c-ai/test-driven-development
library/methodologies/superpowers/skills/test-driven-development/SKILL.md
Use when implementing any feature or bugfix, before writing implementation code. Enforces RED-GREEN-REFACTOR cycle.
$ install --global
skillsauthnpx skillsauth add a5c-ai/babysitter test-driven-developmentInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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TrivyContainer and dependency vulnerability scanner
95%
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SemgrepStatic code analysis for vulnerabilities
95%
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mcp-scan (Snyk)Model Context Protocol security validation
95%
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Snyk (dep)Open source security scanning
50%
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Socket.devSupply chain security analysis
50%
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VirusTotalMulti-engine malware detection
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CrowdStrikeAdvanced threat intelligence
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OWASP Dep-Check
50%
Last scanned: Apr 1, 2026, 12:38 PM55.1s2 files scanned
SKILL.md
- name:
- test-driven-development
- description:
- Use when implementing any feature or bugfix, before writing implementation code. Enforces RED-GREEN-REFACTOR cycle.
Test-Driven Development (TDD)
Overview
Write the test first. Watch it fail. Write minimal code to pass.
Core principle: If you did not watch the test fail, you do not know if it tests the right thing.
The Iron Law
NO PRODUCTION CODE WITHOUT A FAILING TEST FIRST
Write code before the test? Delete it. Start over. No exceptions.
RED-GREEN-REFACTOR
- RED - Write one failing test showing desired behavior
- Verify RED - Run test, confirm it fails for the right reason
- GREEN - Write simplest code to pass (YAGNI)
- Verify GREEN - Run test + full suite, all must pass
- REFACTOR - Clean up while keeping tests green
- COMMIT - Frequent small commits
Red Flags (STOP and Start Over)
- Code before test
- Test passes immediately
- "I'll test after"
- "Too simple to test"
- Rationalizing "just this once"
Agents Used
- Process agents defined in
test-driven-development.js
Tool Use
Invoke via babysitter process: methodologies/superpowers/test-driven-development
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