unit-testing SKILL.md skillA
unit-testing from okhp3/skillz is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add okhp3/skillz/unit-testing@git:20260828.866dec6Pins git:20260828.866dec6 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- okhp3/skillz
- Path
community/unit-testing/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260828.866dec6, committed Aug 28, 2026
- Size
- 5,331 bytes
- Repository stars
- 3
- License
- MIT
Writes unit tests for code that already exists — choosing what deserves a test, what the cases are, and how to assert without welding the test to the implementation. Use this whenever the user asks for tests, unit tests, more coverage, or tests for a specific function or module, and also when adding to untested code where a characterization test is needed first. For building new code test-first, use test-driven-development.
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
# Unit testing A test earns its place by failing when something breaks and staying quiet otherwise. A test that never fails is documentation with a runtime cost; a test that fails on every refactor is a tax. Both get deleted eventually, and the second one takes the good tests' credibility with it. Coverage is not the goal. Coverage measures which lines ran, not whether anything was checked — a suite that executes everything and asserts nothing scores beautifully and catches nothing. ## 1. Decide what deserves a test In descending order of value: 1. **Logic with branches** — conditionals, loops, calculations, parsing, state transitions 2. **Anything that has broken before** — bugs cluster; a fixed bug without a test will return 3. **Boundaries** — where data is validated, converted, or crosses a system edge 4. **Contracts other code relies on** — a public API's shape and its documented failure modes Not worth it: generated code, thin pass-throughs, framework behaviour, getters, and anything where the test would restate the implementation line for line. **Done when:** you can say why each planned test exists, in terms of a failure it would catch. ## 2. Pick the seam …
Read the whole file at its exact version.
How to install
mdr add okhp3/skillz/unit-testing@sha256:8a54e76c6a983668The line at the top of this page pins the label git:20260828.866dec6, 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_olzh2gc5fkuamxza)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 28, 2026.
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 (5331 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
okhp3/skillz · 3 stars · license MIT · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_olzh2gc5fkuamxza GET https://markdownregistry.com/api/v1/resolve?ref=okhp3/skillz/unit-testing GET https://markdownregistry.com/api/v1/blob/8a54e76c6a98366885ffdf4ab99b39ec338f9d70c2908783931bb048e0342144
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.