testing SKILL.md skillA

testing from shinpr/agentic-code is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add shinpr/agentic-code/testing@git:20261103.998947c

Pins git:20261103.998947c in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: shinpr/agentic-code
Path: .agents/skills/testing/SKILL.md
Versions recorded: 5
Latest version: git:20261103.998947c, committed Nov 3, 2026
First version recorded: Dec 30, 2025
Size: 3,642 bytes
Repository stars: 51
License: MIT

Chooses which tests a change needs, with one owning test per behavioral claim at the boundary where it is observable, and runs applicable quality checks. Use when changing behavior, writing tests, or reviewing test quality.

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

# Testing Rules

Tests guarantee accepted behavior, and the next agent reads every existing test as a requirement to preserve. A brittle, duplicated, or implementation-shaped test therefore becomes a false requirement that later work routes around. Keep the set of tests whose proof is worth its maintenance.

## Language-Specific References

Read a language reference only when the repository uses that language and the reference affects the current test or check:

- **TypeScript/Vitest**: [references/typescript.md](references/typescript.md)

Repository commands and established conventions take precedence over generic examples.

## Test Selection

- Prove accepted behavior by default through integration and E2E tests at the boundary users and callers observe. Add a unit test for logic whose cases one representative boundary test cannot prove, such as calculations, parsing, or branching rules.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add shinpr/agentic-code/testing@sha256:aad40e7b230f7f1a

The line at the top of this page pins the label git:20261103.998947c, 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_i32ww3qgtvua2b4w.svg)](https://markdownregistry.com/a/art_i32ww3qgtvua2b4w)

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

Versions

The registry has recorded 5 versions of this file, between Dec 30, 2025 and Nov 3, 2026, about one every 77 days.

version	committed	commit	size	audit
git:20261103.998947c latest	2026-11-03	998947c	3,642 B	A	view · diff
git:20260829.876a214	2026-08-29	876a214	3,437 B	A	view · diff
git:20251231.cb53cf6	2025-12-31	cb53cf6	8,434 B	A	view · diff
git:20251230.9a88ee8	2025-12-30	9a88ee8	8,509 B	A	view · diff
git:20251230.7fa7e69	2025-12-30	7fa7e69	8,509 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 (3642 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

shinpr/agentic-code · 51 stars · license MIT · pushed 2026-11-03 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_i32ww3qgtvua2b4w
GET https://markdownregistry.com/api/v1/resolve?ref=shinpr/agentic-code/testing
GET https://markdownregistry.com/api/v1/blob/aad40e7b230f7f1a396fd42257226e3791af5679aa43cff8090437a2f1c8d8f5

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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