comprehensive-testing SKILL.md skillA
comprehensive-testing from majiayu000/spellbook is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add majiayu000/spellbook/comprehensive-testing@git:20260523.d39dd11Pins git:20260523.d39dd11 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- majiayu000/spellbook
- Path
skills/comprehensive-testing/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260523.d39dd11, committed May 23, 2026
- Size
- 10,503 bytes
- Repository stars
- 290
- License
- MIT
Complete testing strategy covering TDD workflow, test pyramid, unit/integration/E2E/property testing, framework best practices (Jest, Vitest, pytest), mock strategies, and CI integration. Use when writing tests, reviewing test quality, or establishing testing standards.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Comprehensive Testing
> Based on [Anthropic's Claude Code Best Practices](https://www.anthropic.com/engineering/claude-code-best-practices) and community patterns
## Core Philosophy
> "Claude performs best when it has a clear target to iterate against—a test case provides concrete success criteria."
Testing is not about proving code works; it's about **designing code that is testable** and **documenting expected behavior**.
---
## Test Pyramid
```
/\
/ \ E2E Tests (10%)
/----\ - Full user flows
/ \ - Slowest, most brittle
/--------\
/ \ Integration Tests (20%)
/------------\ - Component interaction
/ \ - Real dependencies
/----------------\
Unit Tests (70%)
- Single function/method
- Fast, isolated, many
```
| Level | Speed | Scope | When to Use |
|-------|-------|-------|-------------|
| Unit | <10ms | Single function | All logic |
| Integration | <1s | Multiple components | APIs, DB |
| E2E | <30s | Full flow | Critical paths |
---
## TDD Workflow (Anthropic Recommended)
### The 6-Step Process
```
1. WRITE TESTS FIRST
↓
2. VERIFY TESTS FAIL
↓
…Read the whole file at its exact version.
How to install
mdr add majiayu000/spellbook/comprehensive-testing@sha256:7e2748e63bcd99f6The line at the top of this page pins the label git:20260523.d39dd11, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_zpspkkwfyv4gvz2n)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on May 23, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (10503 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
majiayu000/spellbook · 290 stars · license MIT · pushed 2026-11-04 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_zpspkkwfyv4gvz2n GET https://markdownregistry.com/api/v1/resolve?ref=majiayu000/spellbook/comprehensive-testing GET https://markdownregistry.com/api/v1/blob/7e2748e63bcd99f62e8a5f63bd9c4e3f0f63b41e473fc880dac60486fa746d1d
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.