test-runner

test-runner is a skill for Claude Code, Codex from amanning3390/hermeshub. It costs 40 tokens per session (418 once invoked), scanned A, original, MIT.

A skill for creating and running tests in JavaScript or TypeScript, Python, Go, and Rust, then reporting results and coverage. Coverage shows which parts of the code the tests exercise.

In plain words
What is it for?
Use it to scaffold tests, run test suites, check coverage, test expected and error cases, mock outside services, and support TDD, or test-driven development, where tests guide implementation.
Why use it?
It helps find incorrect behavior, edge cases, and failures before code is relied on, while showing where tests are still missing.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to scaffold tests, run test suites, check coverage, test expected and error cases, mock outside services, and support TDD, or test-driven development, where tests guide implementation.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/amanning3390/hermeshub/test-runner
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 amanning3390/hermeshub --skill test-runner
Clone the repo
git clone --depth 1 https://github.com/amanning3390/hermeshub

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 test-runner

README.md
[![agentmods](https://agentmods.dev/badge/skills/amanning3390/hermeshub/test-runner.svg)](https://agentmods.dev/skills/amanning3390/hermeshub/test-runner)
Your own site
<a href="https://agentmods.dev/skills/amanning3390/hermeshub/test-runner"><img src="https://agentmods.dev/badge/skills/amanning3390/hermeshub/test-runner.svg" alt="Measured on agentmods" height="20"></a>
Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 418 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 original 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 $0.00040 $0.00418
Opus 5 $0.00020 $0.00209
Sonnet 5 $0.00008 $0.00084
Haiku 4.5 $0.00004 $0.00042

Measured 7d ago against content hash 0f7b3df3bfe6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

test-runner 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 7d 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.

skills/test-runner/SKILL.md · 59 lines

What it actually says

Test Runner

Multi-language test scaffolding, execution, and analysis.

When to Use

  • User wants to write tests for existing code
  • User asks to run a test suite
  • User wants coverage analysis
  • User practices TDD and needs test scaffolding

Procedure

  1. Detect language and testing framework
  2. Analyze the code under test
  3. Generate test cases covering:
    • Happy path (expected behavior)
    • Edge cases (empty input, null, boundaries)
    • Error cases (invalid input, exceptions)
  4. Run the test suite
  5. Report results and coverage

Supported Frameworks

Language Framework Run Command
JavaScript/TS Jest npx jest
Python Pytest python -m pytest
Go go test go test ./...
Rust cargo test cargo test

Test Patterns

  • Arrange-Act-Assert for unit tests
  • Given-When-Then for behavior tests
  • Table-driven tests for parameterized cases
  • Mock external dependencies

Pitfalls

  • Don't test implementation details, test behavior
  • Mock external services, don't hit real APIs
  • Clean up test fixtures after each test
  • Watch for flaky tests (timing, ordering)

Verification

  • All tests pass
  • Coverage meets threshold (aim for 80%+)
  • No flaky tests on repeated runs
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. 7d ago First seen · 59 lines · 40 tokens per session scan A 0f7b3df3bfe6

Subscribe to this mod's changes

test-runner is a skill published in the GitHub repository amanning3390/hermeshub (35 stars, last pushed 2mo ago), licensed MIT. It adds 40 tokens to every session and 418 once invoked, about $0.0002 per session on Opus 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.

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