Use when writing or running tests for this project. Covers unit vs E2E test decisions, test file locations, mock patterns, and project-specific testing conventions. (project)
Install
npx skills add cloudflare/sandbox-sdk --skill testingnpx skills add cloudflare/sandbox-sdk --skill testing -a claude-code -gnpx skills add cloudflare/sandbox-sdk --skill testing -a codex -ggemini skills install https://github.com/cloudflare/sandbox-sdk.git --path .opencode/skill/testinggh skill install cloudflare/sandbox-sdk testinggit clone --depth 1 https://github.com/cloudflare/sandbox-sdk /tmp/cloudflare__sandbox-sdk
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/cloudflare__sandbox-sdk/.opencode/skill/testing ~/.claude/skills/testing # Claude Code
cp -R /tmp/cloudflare__sandbox-sdk/.opencode/skill/testing ~/.agents/skills/testing # Codex, Cursor, Gemini CLI, Copilot, OpenCode