testing-pyramid

A command for reviewing how a project’s tests are distributed across unit, integration, and end-to-end tests. It also provides recommendations for coverage, organization, quality, and strategy.

In plain words
What is it for?
Use it to identify the test framework, list and classify test files, compare the distribution with the guideline, and find issues such as unclear, dependent, or poorly structured tests.
Why use it?
It gives a structured way to find missing or overrepresented types of tests instead of judging the suite by file count alone. Its 70/20/10 split is a guideline, not a strict requirement.

Skill for Claude CodeCodexCursor

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/usrrname/cursorrules/testing-pyramid
Any agent
npx skills add usrrname/cursorrules --skill testing-pyramid
Clone the repo
git clone --depth 1 https://github.com/usrrname/cursorrules

Made for: Claude Code, Codex, Cursor.

Per session 11 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,284 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 $0.00011 $0.02284
Opus 5 $0.00005 $0.01142
Sonnet 5 $0.00002 $0.00457
Haiku 4.5 $0.00001 $0.00228

Measured 2d ago against content hash fa655e47669c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

testing-pyramid 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.

.cursor/skills/testing-pyramid/SKILL.md · 327 lines

How it starts

The opening of the file, as written. The whole thing — 327 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Test Distribution Analysis Command 🧪

This command guides the AI agent to analyze test distribution across unit, integration, and E2E tests, and provide recommendations for increasing test coverage and improving test distribution in line with business and technical strategy.

Critical Rules

  • Start by identifying the test framework and available coverage tools
  • Analyze test distribution using framework-specific commands to list all test files
  • Classify tests accurately as unit, integration, or E2E based on multiple indicators
  • Target distribution: 70% unit tests, 20% integration tests, 10% E2E tests (this is a guideline at early stages of a project, not a strict requirement)
  • Provide actionable recommendations when distribution deviates from ideal ratios
  • Consider test file organization, naming conventions, and co-location with source code
  • Evaluate test quality indicators (arrange-act-assert pattern, independence, clarity)
  • Identify common violations and suggest improvements

Workflow Phases

1. Framework Identification

  • Check package.json for test framework dependencies:
    • Jest: jest or @jest/core in dependencies/devDependencies
    • Vitest: vitest in dependencies/devDependencies
    • Playwright: @playwright/test in dependencies/devDependencies
    • Cypress: cypress in dependencies/devDependencies
    • Mocha: mocha in dependencies/devDependencies
  • Identify coverage tools and scripts in package.json:
    • Look for test:coverage, coverage, or scripts with --coverage flags
    • Note available coverage reporters and formats

2. Test Discovery

Use framework-specific commands to list all test files:

  • Jest: npx jest --listTests (lists all test files without running)
  • Vitest: npx vitest list (lists all test files)
  • Playwright: npx playwright test --list (lists all test specs)
  • Cypress: Check cypress.config.js for specPattern or run npx cypress run --dry-run

Checkpoint: Verify all test files are discovered and no test directories are missed.

Read the full file on GitHub · 327 lines

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 · 327 lines · 11 tokens per session scan A fa655e47669c

Subscribe to this mod's changes

testing-pyramid is a skill published in the GitHub repository usrrname/cursorrules (10 stars, last pushed 4mo ago), licensed ISC. It adds 11 tokens to every session and 2,284 once invoked, about $0.0001 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.