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rust-testing skillA

Name: rust-testing
Author: kunanonj

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rust-testing is agent-read markdown (skill) from kunanonj/ai-skills-hub: Rust testing patterns including unit tests, integration tests, async testing, property-based testing, mocking, and coverage. Follows TDD methodology..

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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
…

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Versions

version	committed	commit	size	audit
git:20260628.caecf60 latest	2026-06-28	caecf60	11,699 B	A	view

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A 17 of 17 checks passed. Deterministic, no model, same answer every run.

pass: Frontmatter block present
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pass: Frontmatter declares a description
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pass: No credential-shaped string
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pass: No text hidden with inline styles
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Source

GitHub

kunanonj/ai-skills-hub · 5 stars · license MIT · pushed 2026-09-14 · branch main

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