testing

A testing guide for the ar-io-node repository, covering which test type to use and how to run it.

In plain words
What is it for?
Writing tests, selecting an appropriate test layer, running individual tests or the suite, and investigating test failures.
Why use it?
It reduces guesswork when choosing between unit, property, end-to-end, integration, load, and other tests.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/ar-io/ar-io-node/testing
Any agent
npx skills add ar-io/ar-io-node --skill testing
Clone the repo
git clone --depth 1 https://github.com/ar-io/ar-io-node

Made for: Claude Code, Codex.

Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,595 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
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 $0.00000 $0.02595
Opus 5 $0.00000 $0.01298
Sonnet 5 $0.00000 $0.00519
Haiku 4.5 $0.00000 $0.00260

Measured 2d ago against content hash dd121a61c6c2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

testing scanned grade A with 1 finding 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 2d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

When a test needs the real service running (load tools, parquet scripts, ad-hoc curl):
.claude/skills/testing/SKILL.md · 112 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 2d ago First seen · 112 lines · 0 tokens per session scan A dd121a61c6c2

Subscribe to this mod's changes

testing is a skill published in the GitHub repository ar-io/ar-io-node (124 stars, last pushed 2d ago), licensed AGPL-3.0. It costs nothing until one of its globs matches a file; then it loads 2,595 tokens. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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