ALWAYS USE when asked to fix, rewrite, update, improve, modernize, show corrected code for, or explain existing MSTest tests or MSTest-specific configuration. Use for "review" when corrected code or edits are wanted, even for one pasted assertion or passing tests with bad failure output.
Install
npx skills add dotnet/skills --skill writing-mstest-testsnpx skills add dotnet/skills --skill writing-mstest-tests -a claude-code -gnpx skills add dotnet/skills --skill writing-mstest-tests -a codex -ggemini skills install https://github.com/dotnet/skills.git --path plugins/dotnet-test/skills/writing-mstest-testsgh skill install dotnet/skills writing-mstest-testsgit clone --depth 1 https://github.com/dotnet/skills /tmp/dotnet__skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/dotnet__skills/plugins/dotnet-test/skills/writing-mstest-tests ~/.claude/skills/writing-mstest-tests # Claude Code
cp -R /tmp/dotnet__skills/plugins/dotnet-test/skills/writing-mstest-tests ~/.agents/skills/writing-mstest-tests # Codex, Cursor, Gemini CLI, Copilot, OpenCode