Migrate classic .NET projects to new project structure

[eiriktsarpalis]

This PR moves any outstanding legacy *proj files to the new project structure.

[ctaggart]

Looks good. Then you can get rid of the other project file by switching to <TargetFrameworks>netstandard2.0;net40</TargetFrameworks>. The only issue is VS 2017 debugging. C# picks the first framework listed to debug against by default. F# doesn't work too well in 15.5. dotnet/fsharp#4084

[ctaggart]

Ah, the Travis CI builds are failing:

/usr/share/dotnet/sdk/2.0.0/Microsoft.Common.CurrentVersion.targets(1122,5): error MSB3644: The reference assemblies for framework ".NETFramework,Version=v4.6.1" were not found. To resolve this, install the SDK or Targeting Pack for this framework version or retarget your application to a version of the framework for which you have the SDK or Targeting Pack installed. Note that assemblies will be resolved from the Global Assembly Cache (GAC) and will be used in place of reference assemblies. Therefore your assembly may not be correctly targeted for the framework you intend. [/home/travis/build/fsprojects/Argu/tests/Argu.Tests/Argu.Tests.fsproj]

I'll find the link to tell dotnet to use mono to build net461.

[ctaggart]

So it sounds like you can just call msbuild /t:build instead of dotnet build to make it work. dotnet/sdk#335

[eiriktsarpalis]

Actually, it looks like it's testing that fails. Think it might be an xunit issue?

[ctaggart]

Yeah, you are right. I wonder if there is a way to limit the tests to just netstandard on Travis.
microsoft/vstest#326

[ctaggart]

Yeah, until they fix that issue, you'd have to run the net461 tests another way on Unix. You can use the dotnet test on Windows with all the frameworks and then with just network on Unix.

DotNetCli.Test (fun c -> { c with Project = proj; Framework = "netcoreapp2.0" })

if EnvironmentHelper.isWindows then
    DotNetCli.Test (fun c -> { c with Project = proj; Framework = "net461" })

You will have to combine the unit test project into one or specify them separately.

[ctaggart]

I was hoping that was going to work. In one of my projects, I still have to call the console runner on Unix.

mono $HOME/.nuget/packages/xunit.runner.console/2.3.1/tools/net452/xunit.console.exe ./UnitTest/bin/Release/net46/UnitTest.dll