How to modify a CLI project to include unit tests?

I’m new to the dotnet ecosystem (coming from the JVM) and wanted to share this simple CLI project with you for feedback.https://ift.tt/3rR7kQs is a very simple tool that does AES encryption/decryption given a key and a file path.In order to add unit tests to this project, do I actually require creating a solution, and then creating a separate unit test project which imports this app?Should I delete my existing repo and set it up from scratch using the solution approach? Are github repo defined at the project level or the solution level? via /r/learncsharp https://ift.tt/3le01Q1