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test-gap-hunter SKILL.md skillA

test-gap-hunter from milad-ahmd/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add milad-ahmd/agent-skills/test-gap-hunter@git:20261025.7c7d700

Pins git:20261025.7c7d700 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: milad-ahmd/agent-skills
Path: skills/test-gap-hunter/SKILL.md
Versions recorded: 1
Latest version: git:20261025.7c7d700, committed Oct 25, 2026
Size: 2,280 bytes
Repository stars: 5
License: MIT

Finds the riskiest untested code in a project and writes meaningful tests for it using the project's existing test framework and conventions. Use when the user asks to improve coverage, add tests, find untested code, or harden a module before a refactor.

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 Gap Hunter

Write the tests that actually catch bugs, not tests that only inflate coverage.

## Workflow

1. **Detect the test setup.** Find the framework (Jest, Vitest, pytest, Go `testing`, JUnit, RSpec, PHPUnit, XCTest, flutter_test...), the test file locations and naming, the mocking and fixture style, and the command used to run tests (package scripts, Makefile, CI).
2. **Measure, if possible.** Run the coverage tool when one is configured (`vitest --coverage`, `jest --coverage`, `pytest --cov`, `go test -cover ./...`). If not, map source files to test files by name.
3. **Rank the gaps by risk**, not by line count:
   - business logic, money, auth, permissions, parsing, date/time handling, concurrency
   - code with many branches and error paths
   - recently changed code (`git log --since=90.days --name-only`)
   - public APIs that other modules depend on
4. **Present the top 5–10 gaps** with a one-line reason each, then write tests for the ones the user picks (default: the top 3).
5. **Run the new tests** and iterate until they pass. If a test reveals a real bug, **don't change the test to make it pass**. Report the bug.

## What a good test covers
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add milad-ahmd/agent-skills/test-gap-hunter@sha256:d90cce3593b5bdc2

The line at the top of this page pins the label git:20261025.7c7d700, 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_cnwvywipz7hdz3v2.svg)](https://markdownregistry.com/a/art_cnwvywipz7hdz3v2)

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

Versions

The registry has recorded 1 version of this file, committed on Oct 25, 2026.

version	committed	commit	size	audit
git:20261025.7c7d700 latest	2026-10-25	7c7d700	2,280 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 (2280 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

milad-ahmd/agent-skills · 5 stars · license MIT · pushed 2026-10-29 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_cnwvywipz7hdz3v2
GET https://markdownregistry.com/api/v1/resolve?ref=milad-ahmd/agent-skills/test-gap-hunter
GET https://markdownregistry.com/api/v1/blob/d90cce3593b5bdc264751fbd6fd48d011db78da6f5e2c700e857ee567f821ef8

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.