tdd
Test-driven development — vertical red-green-refactor slices through public interfaces.
Skill by yugasun
Chalk Labs
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Install
Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.
npx agentmarket install skill/yugasun-tdd
Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.
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About
Use cases: testing
Reviews
Write a reviewNo reviews yet. Installed it? Reviews come from verified installers only. How reviews work
Permissions
What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.
- Tools
- No tools found
- Secrets
- None asked for
- Install scripts
- None found
Network hosts it talks to 1
codeload.github.com· found in install command
Files it touches
~/.claude/skills/tdd
What's inside
- Skill name
tdd- Description
- Test-driven development — vertical red-green-refactor slices through public interfaces.
- License
- Apache-2.0
- Instructions
- 24 lines in SKILL.md · view on GitHub
Files (4)
- SKILL.md
- mocking.md
- refactoring.md
- tests.md
SKILL.md (first lines)
# TDD Tests verify **behavior through public interfaces**, not implementation. Good tests survive refactors; bad tests break on rename. See [tests.md](tests.md) and [mocking.md](mocking.md) for examples. ## Anti-pattern: horizontal slices Don't write all tests then all code. One behavior: RED → GREEN → repeat. ## Workflow 1. **Plan** — read `CONTEXT.md`/ADRs. Confirm interface changes and behaviors to test with user. 2. **Tracer bullet** — one test, one minimal implementation, passes. 3. **Loop** — one test at a time; only code to pass current test; no speculation. 4. **Refactor** — only when GREEN; see [refactoring.md](refactoring.md). ## Per-cycle checklist - [ ] Describes behavior, not implementation - [ ] Uses public interface only - [ ] Minimal code for this test
From yugasun/aiops, Apache-2.0.
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file-refactor
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review
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Review in three modes — code (diff vs standards/spec), design (NOTES + tech-spec before planning), drift (implementation vs tech-spec before ship).
SkillCFreshness: C★ 4Claude Code +9 - 0.516score
aiops-setup
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Configure a target project for the aiops bundle — issue tracker, triage labels, domain doc layout.
SkillCFreshness: C★ 4Claude Code +9 - 0.514score
prune
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Review diffs for over-engineering only.
SkillCFreshness: C★ 4Claude Code +9 - 0.513score
to-issues
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Break a plan or PRD into vertical-slice issues on the project issue tracker.
SkillCFreshness: C★ 4Claude Code +9 - 0.513score
aiops-implement
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Delivery overlay — orchestrates lean ladder, tdd, prune, review with sub-phase gates; commits only on user approval.
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Signals
- Stars
- 4
- Forks
- 1
- Open issues
- 0
- Last commit (this folder)
- Jun 26, 2026 (4 months ago)
- Last release
- Jul 20, 2026 (3 months ago)
From GitHub (fetched Oct 24, 2026).
Details
- License
- Apache-2.0
- Repository
- github.com/yugasun/aiops
- Website
- aiops.yugasun.com/
- First seen
- Oct 24, 2026
- Last checked
- Oct 24, 2026
- Source
- GitHubgithub-graphql
More from yugasun
- 0.569score
lean
yugasun
Minimal solution discipline: YAGNI ladder, stdlib and native first, shortest working diff.
SkillBFreshness: B★ 4Claude Code +9 - 0.521score
aiops
yugasun
Flow Conductor for the aiops bundle.
SkillCFreshness: C★ 4Claude Code +9 - 0.519score
file-refactor
yugasun
Keep source files under 500 lines.
SkillCFreshness: C★ 4Claude Code +9 - 0.519score
code-graph
yugasun
Build and query a persistent code graph for the target project.
SkillCFreshness: C★ 4Claude Code +9 - 0.519score
domain-modeling
yugasun
Build and sharpen a project's domain model — glossary, ubiquitous language, ADRs.
SkillCFreshness: C★ 4Claude Code +9 - 0.519score
architect-design
yugasun
Structured design process for the architect agent.
SkillCFreshness: C★ 4Claude Code +9
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Cite this page
tdd skill. Agent Mart. https://agentmart.dev/skills/yugasun-tdd (last updated 2026-10-24)