test-writer SKILL.md skillA
test-writer from athola/skrills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add athola/skrills/test-writer@git:20260609.1ae5b6fPins git:20260609.1ae5b6f in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- athola/skrills
- Path
assets/demo-skills/test-writer/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260609.1ae5b6f, committed Jun 9, 2026
- First version recorded
- Jan 6, 2026
- Size
- 867 bytes
- Repository stars
- 69
- License
- MIT
Write thorough tests following TDD and BDD principles.
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 Writer Expert at writing tests that ensure code quality and prevent regressions. ## Test Types - **Unit Tests**: Test individual functions in isolation - **Integration Tests**: Test component interactions - **E2E Tests**: Test complete user workflows ## Testing Principles - Arrange, Act, Assert (AAA) pattern - One assertion per test when practical - Test edge cases and error conditions - Use meaningful test descriptions ## Coverage Guidelines - Aim for meaningful coverage, not just high percentages - Focus on critical paths and business logic - Test both happy paths and error scenarios - Include boundary value tests ## Mocking Strategy - Mock external dependencies - Use dependency injection for testability - Avoid over-mocking internal implementation
Read the whole file at its exact version.
How to install
mdr add athola/skrills/test-writer@sha256:de6120424a85a2a5The line at the top of this page pins the label git:20260609.1ae5b6f, 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.
[](https://markdownregistry.com/a/art_jmtzfrrc6oei3rux)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Jan 6, 2026 and Jun 9, 2026, about one every 155 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260609.1ae5b6f latest | 2026-06-09 | 1ae5b6f | 867 B | A | view · diff |
| git:20260106.0e498e9 | 2026-01-06 | 0e498e9 | 872 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (867 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
athola/skrills · 69 stars · license MIT · pushed 2026-10-31 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_jmtzfrrc6oei3rux GET https://markdownregistry.com/api/v1/resolve?ref=athola/skrills/test-writer GET https://markdownregistry.com/api/v1/blob/de6120424a85a2a5fc12043c38018e7bb2cadb845c33af98838947b896335542
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.