dotnet-enable-testing-platform

Enable the Microsoft Testing Platform runner for a .NET solution by configuring global.json.

The Microsoft Testing Platform is a modern, extensible test runner that provides improved performance, better diagnostics, and native support for parallel test execution.

Steps

1. Find the solution file (*.sln) in the current directory

- If no .sln found, warn and stop

1. Check for existing global.json in the solution root directory

- Read contents if file exists

1. Create or update global.json:

- If file does not exist, create it: ``json { "test": { "runner": "Microsoft.Testing.Platform" } } ` - If file exists, merge the test section while preserving all other content: - Parse existing JSON - Add or update the test.runner property - Preserve sdk, msbuild-sdks`, and any other existing sections

1. Verify JSON validity:

``bash dotnet build dotnet test ``

1. If build fails, report the error and ask user how to proceed

1. Report results:

- Confirm global.json was created or updated - Show the final global.json content - Confirm build status - Confirm tests run successfully

Example global.json Configurations

Minimal (new file):

{
  "test": {
    "runner": "Microsoft.Testing.Platform"
  }
}

Merged (existing file with SDK pinning):

{
  "sdk": {
    "version": "8.0.100",
    "rollForward": "latestMinor"
  },
  "test": {
    "runner": "Microsoft.Testing.Platform"
  }
}

Error Handling

• If no .sln found: warn and stop
• If global.json exists but is invalid JSON: report error and ask user
• If build fails after update: show errors and ask user how to proceed