Agent skill

tdd-guide

Test-driven development wrapper for vibe coding flow. Enforces RED -> GREEN -> REFACTOR and >=80% coverage target.

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Install this agent skill to your Project

npx add-skill https://github.com/foryourhealth111-pixel/Vibe-Skills/tree/main/bundled/skills/tdd-guide

SKILL.md

tdd-guide (Codex Compatibility)

Use this skill for all feature work, bug fixes, and refactors that change behavior.

Core Rule

No production code before a failing test.

Workflow

  1. RED
  • Write one failing test for one behavior.
  • Confirm the failure is expected.
  1. GREEN
  • Implement the minimal code to pass.
  • Re-run tests and keep scope narrow.
  1. REFACTOR
  • Improve structure/naming without changing behavior.
  • Keep all tests green.
  1. COVERAGE
  • Verify coverage target (recommended >=80% for lines/functions/branches).
  • Add missing tests for edge/error paths.

Minimum Test Set

  • Unit: public functions and core logic.
  • Integration: API/data/service boundaries.
  • E2E: critical user path only when relevant.

Required Edge Cases

  • Null/undefined input
  • Empty values
  • Invalid types
  • Boundary values
  • Error paths (network/DB/file)
  • Concurrency-sensitive behavior

Vibe Integration

  • Primary coding skill in M-grade flow.
  • Compatible fallback target for everything-claude-code:tdd-guide.
  • For richer TDD patterns, combine with test-driven-development.

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