Writing Tests

by saffron-health

Writing Tests is a Quality skill for Claude Code, published by saffron-health in libretto.

877 stars67 forkson saffron-health/librettoAdded 2026/08/22Repository updated 2026/08/21

View source on GitHub Download repo ZIP

automationbrowserclaude-codecodexrpa

Install in seconds

Install Writing Tests

Copy Writing Tests into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/saffron-health/libretto/tree/main/.agents/skills/writing-tests ~/.claude/skills/writing-tests

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/saffron-health/libretto.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: .agents/skills/writing-tests/SKILL.md in saffron-health/libretto
Installs to: ~/.claude/skills/writing-tests
Collection: One of 23 skills cataloged from this repository
Category: Quality — 1354 skills

What Writing Tests does

Writing Tests helps you create and edit test files that model real user flows. Use it when adding, modifying, or reviewing tests that should match the product interface closely.

Writing Tests is cataloged under Quality on DirSkills. Writing Tests comes from a repository tagged automation, browser, claude-code, codex and rpa.

Documentation

README

Excerpt

Writing Tests

Core Principle: Tests Are User Flows

Each test should represent a single, concrete flow that a real user would follow when interacting with the system. Write tests at the same abstraction level as the user experiences the system.

The test should call the system the same way a user would. If the system is a CLI, the test should invoke the CLI with argument strings. If it's a library, the test should call the public API. Don't wrap the interface in test-specific helpers that hide what's actually happening.

Good — the test reads like what a user would do:

This is the opening of the README. Read the full README on GitHub.

Frequently asked about Writing Tests

What else does saffron-health publish alongside Writing Tests?
Writing Tests is one of 23 skills that DirSkills catalogs from saffron-health/libretto, the repository it ships in. Its siblings there include Address Review, CLI Development and Errore. Each one is a separate skill with its own page in this directory, installs the same way Writing Tests does, and is maintained by saffron-health in that same repository. The rest of the collection is listed on the saffron-health/libretto page.
How does Writing Tests compare to other Quality skills?
Writing Tests ranks #906 by stars among the 1354 Quality skills in this catalog. The most-starred ones next to it are Benchmark, Benchmark Optimization Loop and API Design Patterns. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Writing Tests against them. Open each page to compare what they document and how they install.