# Testing Tdd London Execution Checklist

> Sub-skill of testing-tdd-london: Execution Checklist.

- Skill: `vamseeachanta/testing-tdd-london-execution-checklist` (Agent Skill)
- Install (CLI): `npx skillmds@latest add vamseeachanta/testing-tdd-london-execution-checklist`
- Raw SKILL.md: https://api.skillmd.com/api/skills/vamseeachanta/testing-tdd-london-execution-checklist/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: vamseeachanta (https://skillmd.com/u/vamseeachanta)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/vamseeachanta/testing-tdd-london-execution-checklist

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# Execution Checklist

## Execution Checklist


- [ ] Write failing acceptance test (outside)
- [ ] Define mock contracts for all collaborators
- [ ] Write failing unit test for next layer
- [ ] Implement minimal code to pass test
- [ ] Verify all mock interactions
- [ ] Refactor while keeping tests green
- [ ] Move to next inner layer
- [ ] Share contracts with swarm if coordinating