Quaterback Rating or QBR calculator program. Calculates NFL and NCAA QBR given the passes attempted, passes completed, yards gained, touchdowns, and interceptions. More information about QBR and how it is calculated can be found here
You can run the unit tests from within Visual Studio 2019 by first installing the NUnit 3 Test Adapter extension. More information here. Information about NUnit and the NUnit Console can be found here