rust-testing SKILL.md skillA

rust-testing from affaan-m/ecc is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add affaan-m/ecc/rust-testing@git:20260607.4ad5756

Pins git:20260607.4ad5756 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
affaan-m/ecc
Path
.kiro/skills/rust-testing/SKILL.md
Versions recorded
1
Latest version
git:20260607.4ad5756, committed Jun 7, 2026
Size
11,699 bytes
Repository stars
299,696
License
MIT

Rust testing patterns including unit tests, integration tests, async testing, property-based testing, mocking, and coverage. Follows TDD methodology.

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

# Rust Testing Patterns

Comprehensive Rust testing patterns for writing reliable, maintainable tests following TDD methodology.

## When to Use

- Writing new Rust functions, methods, or traits
- Adding test coverage to existing code
- Creating benchmarks for performance-critical code
- Implementing property-based tests for input validation
- Following TDD workflow in Rust projects

## How It Works

1. **Identify target code** — Find the function, trait, or module to test
2. **Write a test** — Use `#[test]` in a `#[cfg(test)]` module, rstest for parameterized tests, or proptest for property-based tests
3. **Mock dependencies** — Use mockall to isolate the unit under test
4. **Run tests (RED)** — Verify the test fails with the expected error
5. **Implement (GREEN)** — Write minimal code to pass
6. **Refactor** — Improve while keeping tests green
7. **Check coverage** — Use cargo-llvm-cov, target 80%+

## TDD Workflow for Rust

### The RED-GREEN-REFACTOR Cycle

```
RED     → Write a failing test first
GREEN   → Write minimal code to pass the test
REFACTOR → Improve code while keeping tests green
REPEAT  → Continue with next requirement
```

### Step-by-Step TDD in Rust

```rust
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add affaan-m/ecc/rust-testing@sha256:e55dc89ab64a49f9

The line at the top of this page pins the label git:20260607.4ad5756, 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_uugl7s32p3payetp.svg)](https://markdownregistry.com/a/art_uugl7s32p3payetp)

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

Versions

The registry has recorded 1 version of this file, committed on Jun 7, 2026.

versioncommittedcommitsizeaudit
git:20260607.4ad5756 latest2026-06-07 4ad5756 11,699 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 (11699 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

affaan-m/ecc · 299,696 stars · license MIT · pushed 2026-11-06 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_uugl7s32p3payetp
GET https://markdownregistry.com/api/v1/resolve?ref=affaan-m/ecc/rust-testing
GET https://markdownregistry.com/api/v1/blob/e55dc89ab64a49f9cec0d6d15b14a21f5c096f342e0046799f47b7fa2d22e770

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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