dotnet new classlib -n Number
cd Number
dotnet restore
cd ..
dotnet new xunit -n Number.Tests
cd Number.Tests
dotnet add reference ../Number/Number.csproj
dotnet add package Moq
dotnet add package coverlet.msbuild
dotnet restore
cd ..
dotnet new sln -n Number
dotnet sln Number.sln add ./Number/Number.csproj
dotnet sln Number.sln add ./Number.Tests/Number.Tests.csproj