test-coverage SKILL.md skillA

test-coverage from luongnv89/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add luongnv89/skills/test-coverage@v1.5.0

Pins v1.5.0 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
luongnv89/skills
Path
skills/test-coverage/SKILL.md
Versions recorded
5
Latest version
v1.5.0, committed Oct 9, 2026
First version recorded
Aug 30, 2026
Size
12,845 bytes
Repository stars
133
License
MIT

Generate unit tests for untested branches and edge cases. Use when coverage is low, CI flags gaps, or a release needs hardening. Not for integration/E2E suites, framework migrations, or fixing production bugs.

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 Coverage Expander

Expand unit test coverage by targeting untested branches and edge cases.

## When to Use

- User asks to "increase test coverage", "add more tests", "expand unit tests", or "cover edge cases"
- A CI pipeline reports low coverage and the user wants it improved
- A code review flags untested error paths or boundary conditions
- The user wants to identify and fill gaps in an existing test suite before a release

## Stack (detect before Step 1 of Workflow)

Detect the project's language from its manifest file and use the matching commands throughout the Workflow below:

| Manifest | Stack | Coverage command | Test framework |
|---|---|---|---|
| `package.json` | JavaScript/TypeScript | `npx jest --coverage` or `npx vitest --coverage` | Jest, Vitest, Mocha |
| `pyproject.toml` | Python | `pytest --cov=. --cov-report=term-missing` | pytest, unittest |
| `go.mod` | Go | `go test -coverprofile=coverage.out ./...` | testing, testify |
| `Cargo.toml` | Rust | `cargo tarpaulin` or `cargo llvm-cov` | built-in test framework |

If none of these manifests is found, see [Edge Cases](#edge-cases) — "No test framework detected".

## Repo Sync Before Edits (mandatory)
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add luongnv89/skills/test-coverage@sha256:0111bb323f3b8b0b

The line at the top of this page pins the label v1.5.0, 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 badge

[![mdr](https://markdownregistry.com/badge/art_j5dbo6iqsxcymqri.svg)](https://markdownregistry.com/a/art_j5dbo6iqsxcymqri)

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

Versions

The registry has recorded 5 versions of this file, between Aug 30, 2026 and Oct 9, 2026, about one every 10 days.

versioncommittedcommitsizeaudit
v1.5.0 latest2026-10-09 475d04d 12,845 BA view · diff
v1.4.12026-10-06 e7b64b2 10,195 BA view · diff
v1.4.02026-10-06 9eade80 9,488 BA view · diff
v1.3.22026-09-26 0efcb34 7,099 BA view · diff
v1.3.12026-08-30 eaf24e4 7,088 BA 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 (12845 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

luongnv89/skills · 133 stars · license MIT · pushed 2026-10-20 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_j5dbo6iqsxcymqri
GET https://markdownregistry.com/api/v1/resolve?ref=luongnv89/skills/test-coverage
GET https://markdownregistry.com/api/v1/blob/0111bb323f3b8b0b0dd3827d996b05c23ab53986b76cf90d560fd0f018d07b9f

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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