rust-testing

rust-testing is a skill for Claude Code, Codex from AeonDave/malskill. It costs 81 tokens per session (960 once invoked), scanned A, original, no licence file.

A collection of testing practices for Rust code, including unit tests, integration tests, asynchronous tests, documentation tests, property tests, and snapshot tests. Rust is a programming language focused on speed and memory safety.

In plain words
What is it for?
Use it when writing or reviewing tests for .rs files, designing fixtures and fakes, checking asynchronous code, or improving continuous integration.
Why use it?
It helps organize reliable tests, reduce flaky results, and improve confidence in Rust crates and workspaces, which are collections of related Rust packages.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it when writing or reviewing tests for .rs files, designing fixtures and fakes, checking asynchronous code, or improving continuous integration.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/aeondave/malskill/rust-testing
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add AeonDave/malskill --skill rust-testing
Clone the repo
git clone --depth 1 https://github.com/AeonDave/malskill

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for rust-testing

README.md
[![agentmods](https://agentmods.dev/badge/skills/aeondave/malskill/rust-testing/github.svg)](https://agentmods.dev/skills/aeondave/malskill/rust-testing)
Your own site
<a href="https://agentmods.dev/skills/aeondave/malskill/rust-testing"><img src="https://agentmods.dev/badge/skills/aeondave/malskill/rust-testing/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for rust-testing

Your own site · 80×15
<a href="https://agentmods.dev/skills/aeondave/malskill/rust-testing"><img src="https://agentmods.dev/badge/skills/aeondave/malskill/rust-testing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 81 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 960 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00081 $0.00960
Opus 5.5 $0.00032 $0.00384
Sonnet 5.5 $0.00016 $0.00192
Haiku 4.5 $0.00008 $0.00096

Measured 1mo ago against content hash 5c6a63d7b8d0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

rust-testing scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

coding/rust-testing/SKILL.md · 78 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago Changed · +2 lines · +7 tokens per session 5c6a63d7b8d0
  2. 1mo ago Changed · +2 lines · +15 tokens per session 7e2adbaa908e
  3. 1mo ago First seen · 74 lines · 59 tokens per session scan A dbbaa1132ec1

Subscribe to this mod's changes

rust-testing is a skill published in the GitHub repository AeonDave/malskill (24 stars, last pushed 6d ago), with no licence file. It adds 81 tokens to every session and 960 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other skills, from other repositories

rust-development

Idiomatisk Rust-utvikling med cargo, clippy, error handling, async/tokio, unsafe og testing.

navikt/copilot · 27 tokens

cargo-test

Skill "cargo-test" from rootwarp/claude-code-plugins-monorepo, covering /cargo-test and instructions.

rootwarp/claude-code-plugins-monorepo · 0 tokens

migrate-xunit-to-xunit-v3

Migrate .NET test projects from xUnit.net v2 to xunit.v3 and fix v3 breaks. Use for package/CPM conversion, OutputType=Exe, preserving the VSTest or MTP runner (including projects currently using YTest.MTP.XUnit2), incompatible TFMs, async void tests, string-to-Type attributes, custom Fact/Theory/BeforeAfterTest…

managedcode/dotnet-skills · 149 tokens

test-harness

Generates pytest test suites with happy path, edge cases, error conditions, fixture scaffolding, mocks, async patterns. Triggers on: "generate tests", "write tests for", "test this function", "create test suite", "pytest for", "unit tests for", "mock strategy for".

Mathews-Tom/armory · 65 tokens

unit-test-parameterized

Provides parameterized testing patterns with JUnit 5, generates data-driven unit tests using @ParameterizedTest, @ValueSource, @CsvSource, @MethodSource. Creates tests that run the same logic with multiple input values. Use when writing data-driven Java tests, multiple test cases from single method, or boundary value…

giuseppe-trisciuoglio/developer-kit · 71 tokens

unit-test-mapper-converter

Provides patterns for unit testing mappers, converters, and bean mappings. Validates entity-to-DTO and model transformation logic in isolation. Generates executable mapping tests with MapStruct and custom converter test coverage. Use when writing mapping tests, converter tests, entity mapping tests, or ensuring…

giuseppe-trisciuoglio/developer-kit · 72 tokens