04-testing

A testing rule for non-trivial Pinky logic that requires a small runnable check focused on behavior and contracts. It favors the project's existing test runner and test layout.

In plain words
What is it for?
Use it when adding or changing logic that is more than a simple one-line operation, and when deciding whether a new test is needed.
Why use it?
It catches broken behavior while avoiding tests that merely depend on internal implementation details.

Cursor rule

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 rules/haroon966/pinky-cursor/04-testing
Clone the repo
git clone --depth 1 https://github.com/Haroon966/pinky-cursor
Per session 101 This file is loaded in full into every session.
When invoked 101 The same file — it is already loaded in full.
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 $0.00101 $0.00101
Opus 5 $0.00051 $0.00051
Sonnet 5 $0.00020 $0.00020
Haiku 4.5 $0.00010 $0.00010

Measured 2d ago against content hash c25352dfca6e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

04-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 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.

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.

adapters/cursor/rules/04-testing.mdc · 13 lines

What it actually says

Pinky testing

  • Non-trivial logic gets one small runnable check or test that fails if the logic breaks.
  • Test behavior and contracts, not implementation trivia.
  • Don't skip or delete failing tests without fixing the cause (or explicitly agreeing with the user).
  • Name tests clearly. Prefer the project's existing test runner and layout.
  • Trivial one-liners need no new test file.
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 · 13 lines · 101 tokens per session scan A c25352dfca6e

Subscribe to this mod's changes

04-testing is a cursor rule published in the GitHub repository Haroon966/pinky-cursor (4 stars, last pushed 24d ago), licensed MIT. It adds 101 tokens to every session, about $0.0005 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 2026-08-31.