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characterisation-tests

100 / 100 · Low risk

Fine to try.

By citypaul/.dotfiles (GitHub) · coding · 760 stars · scanned at commit cd4028d

Use when modifying existing code that lacks tests and you need to document its actual current behavior before making changes -- the legacy code dilemma where you need tests to refactor safely but the code was not written for testability. Specifically for understanding and pinning down what code currently does, not what it should do. Do NOT use for test-driving new behavior (see tdd), general test writing patterns (see testing), verifying test effectiveness (see mutation-testing), or making unte…

Works with any agent that supports SKILL.md skills.

What this skill can do

We found nothing in the files we read that matches our rules. That does not prove the skill is safe: see the limits of static scanning.

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'characterisation-tests' ] || [ -L ~/.agents/skills/'characterisation-tests' ]; then echo 'A skill folder named characterisation-tests already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/citypaul/.dotfiles' "$d" && git -C "$d" checkout --quiet 'cd4028d57d6e4e95814f7b8ee55ca13c23a9c2f0' -- 'claude/.claude/skills/characterisation-tests' && mkdir -p ~/.agents/skills && cp -R "$d"/'claude/.claude/skills/characterisation-tests' ~/.agents/skills/'characterisation-tests' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'characterisation-tests' ~/.claude/skills/'characterisation-tests' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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