[Enhancement] Migrate Xamarin.CommunityToolkit.UnitTests to NUnit

[TheCodeTraveler]

Summary

This enhancement will migrate Xamarin.CommunityToolkit.UnitTests from xUnit (which it currently uses) to NUnit.

The reason for migrating to NUnit is two fold:

1. Xamarin.CommunityToolkit.Markup.UnitTests currently uses NUnit

• Keeping the unit testing framework consistent will allow for a consistent experience for contributors and maintainers

2. xUnit doesn't support the command line command dotnet test for .NET Framework :
   

• Long story short, this is the bash script that is required for us to run .NET Framework tests for xUnit on macOS (that is now included in azure-pipelines.yml:

mono "`find ~/.nuget/packages | grep net461 | grep xunit.console.exe | grep -v config`" "`find . -name Xamarin.CommunityToolkit.UnitTests.dll | grep bin | grep 461`"

Who Will Do The Work?

• I am willing to take this on myself

[TheCodeTraveler]

Currently on-hold until we merge v1.1.0 to main

[PureWeen]

Just an FYI

We're migrating everything to xunit on the .NET MAUI side of things

[TheCodeTraveler]

Thanks Shane! Good to know!

We'll be chatting about the Community Toolkit's .NET MAUI migration soon (we're still in the early planning stage for .NET MAUI support), and I'll make sure we factor this in 👍