Tests

dotnet test tests/SteamCmdHelper.Tests

The tests compile the non-UI source files directly, so they run on Windows, Linux or macOS.

On Windows there are also click-through tests that start the real app and use it through UI Automation (FlaUI): a portable copy in a temp folder, with a fake RimWorld, so nothing of yours is touched. Build the app first (or set MODWRIGHT_EXE to an exe), then:

dotnet build SteamCmdHelper.csproj -c Release
dotnet test tests/SteamCmdHelper.UiTests -c Release

CI runs them against the published exe on every push and pull request.