How to run NUnit tests with Visual Studio 2015 CTP 6?

Question

We have been focusing on the new JavaScript capabilities of Visual Studio 2015 CTP 6 for the past few weeks. We were sorta expecting other basic .NET aspects to just work.

Today, we just tried to add some Unit Tests using NUnit to a WebAPI project and we are 0 for 20 (since it's opening day!) No matter what we try, we can't seem to even be able to add a NuGet package reference to NUnit (including 2.6.4 and 3.0.0-beta1).

Anybody have any suggestions on how to get NUnit tests to work with against ASP.NET 5 WebAPI projects?

Here is what we are doing:

Adding the new 4.6 ASP.NET 5 project

We are interested in the WebAPI stuff:

We read about issues with NuGet Package manager from NuGet Beta2, so we installed that version. And updated our configuration:

We can find the NUnit package (3.0 beta)

But in the end, this is all we get in the output window:

And the references are missing:

Here is our Project.json for this project:

{
  /* Click to learn more about project.json  http://go.microsoft.com/fwlink/?LinkID=517074 */
  "webroot": "wwwroot",
  "version": "1.0.0-*",
  "dependencies": {
    "Microsoft.AspNet.Server.IIS": "1.0.0-beta3",
    "Microsoft.AspNet.Mvc": "6.0.0-beta3",
    "Microsoft.AspNet.StaticFiles": "1.0.0-beta3",
    "Microsoft.AspNet.Server.WebListener": "1.0.0-beta3",
    "NUnit": "3.0.0-beta-1"
  },
  "frameworks": {
    "aspnet50": {},
    "aspnetcore50": {}
  },
  "exclude": [
    "wwwroot",
    "node_modules",
    "bower_components"
  ],
  "bundleExclude": [
    "node_modules",
    "bower_components",
    "**.kproj",
    "**.user",
    "**.vspscc"
  ]
}

Answer 1

Alright, it turns out that my PostSharp NuGet source was messing with NuGet. I disabled it and things started working.

I now have NUnit 3.0 Beta 1 available:

I suspect this is or will be fixed in a recent release of PostSharp or the Package Source.