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characterization-test-generator

95 / 100 · Low risk

Fine to try. Some of what it can do is expected: a coding skill usually runs build and test commands.

By rshankras/claude-code-apple-skills (GitHub) · coding · 882 stars · scanned at commit f958982

Generates tests that capture current behavior of existing code before refactoring. Use when you need a safety net before AI-assisted refactoring or modifying legacy code.

Works with any agent that supports SKILL.md skills.

What this skill can do

Install

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

if [ -e ~/.agents/skills/'characterization-test-generator' ] || [ -L ~/.agents/skills/'characterization-test-generator' ]; then echo 'A skill folder named characterization-test-generator already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/rshankras/claude-code-apple-skills' "$d" && git -C "$d" checkout --quiet 'f9589828e222113d49c7bff417c33038802856ff' -- 'skills/testing/characterization-test-generator' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/testing/characterization-test-generator' ~/.agents/skills/'characterization-test-generator' && 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/'characterization-test-generator' ~/.claude/skills/'characterization-test-generator' (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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