test

test is a command for coding agents from JSK9999/ai-nexus. It costs 4 tokens per session (288 once invoked), scanned A, original, Apache-2.0.

A test-writing command that reads the code, identifies normal, boundary and failure cases, creates tests and runs them to verify the results.

In plain words
What is it for?
Use it when adding tests for functions, including synchronous and asynchronous behavior, invalid inputs and edge cases.
Why use it?
It helps prevent untested behavior and catches regressions by checking both expected inputs and error conditions.

Command

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 commands/jsk9999/ai-nexus/test
Clone the repo
git clone --depth 1 https://github.com/JSK9999/ai-nexus

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

README.md
[![agentmods](https://agentmods.dev/badge/commands/jsk9999/ai-nexus/test.svg)](https://agentmods.dev/commands/jsk9999/ai-nexus/test)
Your own site
<a href="https://agentmods.dev/commands/jsk9999/ai-nexus/test"><img src="https://agentmods.dev/badge/commands/jsk9999/ai-nexus/test.svg" alt="Measured on agentmods" height="20"></a>
Per session 4 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 288 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00004 $0.00288
Opus 5 $0.00002 $0.00144
Sonnet 5 $0.00001 $0.00058
Haiku 4.5 $0.00000 $0.00029

Measured 4d ago against content hash e36e62281bb4, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

test 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 4d 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.

config/commands/test.md · 48 lines

What it actually says

/test

When asked to write tests:

  1. Read the source — Understand what the code does before writing tests
  2. Identify cases — Happy path, edge cases, error cases
  3. Write tests — Use AAA pattern (Arrange, Act, Assert)
  4. Run tests — Verify they pass
  5. Check coverage — Ensure critical paths are covered

Test Structure

describe('functionName', () => {
  it('should return X when given Y', () => {
    // Arrange
    const input = createInput();

    // Act
    const result = functionName(input);

    // Assert
    expect(result).toBe(expected);
  });

  it('should throw when input is invalid', () => {
    expect(() => functionName(null)).toThrow();
  });
});

What to Cover

  • Normal inputs → expected outputs
  • Empty/null/undefined inputs
  • Boundary values (0, -1, MAX)
  • Error conditions and exceptions
  • Async operations (resolve and reject)

Rules

  • One assertion per test (when practical)
  • No test interdependence — each test runs independently
  • Use descriptive names: "should [expected] when [condition]"
  • Don't test private/internal methods directly
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. 4d ago First seen · 48 lines · 4 tokens per session scan A e36e62281bb4

Subscribe to this mod's changes

test is a command published in the GitHub repository JSK9999/ai-nexus (19 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 4 tokens to every session and 288 once invoked, about $0.0000 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.