tdd SKILL.md skillA

tdd from zereight/gitlab-mcp is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add zereight/gitlab-mcp/tdd@git:20260412.9d9ce51

Pins git:20260412.9d9ce51 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: zereight/gitlab-mcp
Path: .github/skills/tdd/SKILL.md
Versions recorded: 1
Latest version: git:20260412.9d9ce51, committed Apr 12, 2026
Size: 3,644 bytes
Repository stars: 2,059
License: MIT

Test-Driven Development enforcement skill. Activates full TDD mode. Activate when: TDD, test-driven, test first, red-green-refactor, write tests first.

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

# TDD — Test-Driven Development

**THE IRON LAW: Write the failing test FIRST. Always.**

## The Red-Green-Refactor Cycle

```
RED   → Write a failing test for the NEXT behavior
GREEN → Write ONLY enough code to make it pass (no extras)
REFACTOR → Clean up code quality (tests must stay green after every change)
REPEAT
```

## Step-by-Step Protocol

### 1. RED Phase
1. Identify the smallest next behavior to implement
2. Write a test that describes that behavior as a named `it()` / `test()` / `def test_`
3. **Run the test** — it MUST FAIL. If it passes, the test is wrong.
4. Confirm the failure message is the RIGHT failure (not a syntax error)

```typescript
// Example: RED — test fails because function doesn't exist yet
it('returns an empty array for an empty input', () => {
  const result = parseItems([]);
  expect(result).toEqual([]);  // FAILS: parseItems is not defined
});
```

### 2. GREEN Phase
1. Write the MINIMUM code to make the test pass
2. Do not add extra logic, default parameters, or "nice-to-haves"
3. Run ALL tests — the new test must pass; existing tests must not break

```typescript
// Example: GREEN — just enough to pass
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add zereight/gitlab-mcp/tdd@sha256:74d5bd64f8c3ffff

The line at the top of this page pins the label git:20260412.9d9ce51, 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](https://markdownregistry.com/badge/art_nxoyw6wh6raismw7.svg)](https://markdownregistry.com/a/art_nxoyw6wh6raismw7)

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

Versions

The registry has recorded 1 version of this file, committed on Apr 12, 2026.

version	committed	commit	size	audit
git:20260412.9d9ce51 latest	2026-04-12	9d9ce51	3,644 B	A	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 (3644 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

zereight/gitlab-mcp · 2,059 stars · license MIT · pushed 2026-10-21 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_nxoyw6wh6raismw7
GET https://markdownregistry.com/api/v1/resolve?ref=zereight/gitlab-mcp/tdd
GET https://markdownregistry.com/api/v1/blob/74d5bd64f8c3ffff701a54d5539887c7feb3541220c408c34acc57a9aebe119a

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.

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