tdd SKILL.md skillA

tdd from techbuzzz/awesome-opencode is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add techbuzzz/awesome-opencode/tdd@git:20260717.d0d8910

Pins git:20260717.d0d8910 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
techbuzzz/awesome-opencode
Path
skills/tdd/SKILL.md
Versions recorded
1
Latest version
git:20260717.d0d8910, committed Jul 17, 2026
Size
3,516 bytes
Repository stars
2
License
MIT

Use when implementing any new feature or bugfix using Test-Driven Development. Guides the Red-Green-Refactor cycle: write failing test first, minimal implementation, then refactor. Works with any language (C#, Go, TypeScript, C++).

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Test-Driven Development Skill

## When to Use

Activate this skill when the user:
- Asks to implement a feature using TDD
- Wants to write tests before implementation
- Is fixing a bug (write test to reproduce first)
- Wants to practice Red-Green-Refactor

## TDD Cycle

### 1. 🔴 RED — Write a Failing Test
```
"Write the simplest test that describes the desired behavior.
Run it. Confirm it fails for the RIGHT reason."
```

Ask the user:
- What is the input?
- What is the expected output?
- What are the edge cases?

### 2. 🟢 GREEN — Write Minimal Code
```
"Write the MINIMUM code to make the test pass.
Don't over-engineer. Don't optimize. Just make it green."
```

### 3. 🔵 REFACTOR — Clean Up
```
"With tests passing, improve the code:
- Extract duplication
- Rename for clarity  
- Simplify logic
- Tests must remain green throughout"
```

## Language-Specific Templates

### C# / xUnit
```csharp
// 1. RED: Write test first
[Fact]
public async Task CreateOrder_WithValidItems_ReturnsOrderWithTotal()
{
    // Arrange
    var sut = new OrderService(new FakeRepository());
    var items = new[] { new OrderItem("Widget", 2, 9.99m) };
    
    // Act
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add techbuzzz/awesome-opencode/tdd@sha256:0ad3799204990ca4

The line at the top of this page pins the label git:20260717.d0d8910, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_hpshphkvrlqftbno.svg)](https://markdownregistry.com/a/art_hpshphkvrlqftbno)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Jul 17, 2026.

versioncommittedcommitsizeaudit
git:20260717.d0d8910 latest2026-07-17 d0d8910 3,516 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (3516 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

techbuzzz/awesome-opencode · 2 stars · license MIT · pushed 2026-10-12 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_hpshphkvrlqftbno
GET https://markdownregistry.com/api/v1/resolve?ref=techbuzzz/awesome-opencode/tdd
GET https://markdownregistry.com/api/v1/blob/0ad3799204990ca45831721afad288243914a76fecefe493a5d50cd32c6854e8

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

More from techbuzzz/awesome-opencode

code-review SKILL.md skill
techbuzzz/awesome-opencode · skills/code-review/SKILL.md · Use when asked to review code, analyze a PR, audit a function or module for quality, security, performance, or…
git:20260717.d0d8910 · audit A · 2 stars
dotnet-expert SKILL.md skill
techbuzzz/awesome-opencode · skills/dotnet-expert/SKILL.md · Use when working with C# or .NET code: implementing features in ASP.NET Core, Entity Framework Core, or Blazor; writing…
.NET 8+ · audit A · 2 stars
git-flow SKILL.md skill
techbuzzz/awesome-opencode · skills/git-flow/SKILL.md · Use when managing git workflow: creating branches, writing commit messages, preparing PRs, generating changelogs…
git:20260717.d0d8910 · audit A · 2 stars
go-expert SKILL.md skill
techbuzzz/awesome-opencode · skills/go-expert/SKILL.md · Use when writing or reviewing Go code: implementing APIs, CLI tools, or microservices; applying Go idioms for error…
Go 1.21+ · audit A · 2 stars
nextjs-dev SKILL.md skill
techbuzzz/awesome-opencode · skills/nextjs-dev/SKILL.md
git:20261012.b1e8839 · audit C · 2 stars
nuxt-dev SKILL.md skill
techbuzzz/awesome-opencode · skills/nuxt-dev/SKILL.md
git:20261012.b1e8839 · audit C · 2 stars
security-audit SKILL.md skill
techbuzzz/awesome-opencode · skills/security-audit/SKILL.md · Use when auditing code for security vulnerabilities: OWASP Top 10 checks, secret scanning, dependency audits, SQL…
git:20260717.d0d8910 · audit A · 2 stars
tailwind-ui SKILL.md skill
techbuzzz/awesome-opencode · skills/tailwind-ui/SKILL.md · Use when building UI with Tailwind CSS: creating components, design systems, implementing dark mode, responsive…
Tailwind CSS v3/v4 · audit A · 2 stars
typescript-astro SKILL.md skill
techbuzzz/awesome-opencode · skills/typescript-astro/SKILL.md · Use when building with Astro framework: creating components, layouts, pages, content collections, integrations; working…
Astro 4+/5+ · audit A · 2 stars

Every file in techbuzzz/awesome-opencode

Other files named tdd

tdd SKILL.md skill
yeachan-heo/oh-my-claudecode · skills/tdd/SKILL.md · Test-first at pre-agreed seams — one test, one implementation, tracer-bullet red/green; independent expected values…
git:20261009.7b270a4 · audit A · 40,236 stars
tdd SKILL.md skill
alirezarezvani/claude-skills · .gemini/skills/tdd/SKILL.md
git:20260309.8902ba7 · audit C · 28,607 stars
tdd SKILL.md skill
cursor/plugins · pstack/skills/tdd/SKILL.md · Use only when the user explicitly asks for TDD, a failing test, or a regression test, OR when the bug has an obvious…
git:20260923.b0b9c7a · audit A · 13,494 stars
tdd SKILL.md skill
cursor/plugins · harness/pstack/claude-code/skills/tdd/SKILL.md · Use only when the user explicitly asks for TDD, a failing test, or a regression test, OR when the bug has an obvious…
git:20261016.182f2ce · audit A · 13,494 stars
tdd SKILL.md skill
vinvcn/mattpocock-skills-zh-cn · skills/engineering/tdd/SKILL.md · 测试驱动开发。适用于用户想用先写测试的方式构建功能或修复缺陷、提到 “red-green-refactor”,或需要集成测试时。
git:20261008.5be0dc1 · audit A · 5,231 stars
tdd SKILL.md skill
wesammustafa/claude-code-everything-you-need-to-know · examples/intermediate/01-first-skill/dot-claude/skills/tdd/SKILL.md · TODO
git:20261006.11cadf7 · audit A · 3,462 stars
tdd SKILL.md skill
michael-denyer/pstack-claude · plugins/pstack/skills/tdd/SKILL.md · Use only when the user explicitly asks for TDD, a failing test, or a regression test, OR when the bug has an obvious…
git:20260923.4a3ef20 · audit A · 3,263 stars
tdd SKILL.md skill
rohitg00/pro-workflow · skills/tdd/SKILL.md · Drive a change through a red-green-refactor loop - failing test first, minimal code to pass, then clean up. Use when…
git:20260718.7f7209d · audit A · 2,927 stars

Browse by kind, by grade A, or by owner.