Cannot get .NET Core NUnit test project's reference to my production class library to work

Question

I have the simplest solution setup possible for a production assembly and a unit tests assembly. First, here is the relevant configuration:

Common.sln
global.json
-- src
---- Common
------ project.json
-- test
---- UnitTests
------ project.json

global.json :

{
  "projects: [ "src", "test" ]
}

Common\\project.json :

{
  "name": "<redacted>",
  "version": "2.0.0-*",
  "description": "<redacted>",
  "copyright": "© 2016 <redacted>",
  "title": "<redacted>",
  "authors": [ "<redacted>" ],
  "language": "en-US",
  "buildOptions": {
    "platform": "anycpu",
    "xmlDoc": true
  },
  "dependencies": {
    "NETStandard.Library": "1.6.0"
  },
  "frameworks": {
    "netstandard1.6": {
      "imports": "dnxcore50"
    }
  }
}

UnitTests\\project.json :

{
  "version": "0.0.0-*",
  "testRunner": "nunit",
  "dependencies": {
    "Common": {
      "target": "project"
    },
    "NUnit": "3.4.1",
    "dotnet-test-nunit": "3.4.0-beta-2"
  },
  "frameworks": {
    "netcoreapp1.0": {
      "imports": [
        "netcoreapp1.0",
        "portable-net45+win8"
      ],
      "dependencies": {
        "Microsoft.NETCore.App": {
          "version": "1.0.1-*",
          "type": "platform"
        }
      }
    }
  }
}

When I compile, I get these errors in the Error List:

Error   NU1002  The dependency Common  does not support framework .NETCoreApp,Version=v1.0. UnitTests   <redacted>\UnitTests\project.json   5   
Error           The given key was not present in the dictionary.    UnitTests       1   

What's going on here? I've followed every tutorial I can find to try and set these projects up, but none of them work. Perhaps things have changed in .NET Core land since the tutorials were created? What do I need to change to get the UnitTests project to recognize my Common project?

Two other smaller concerns:

1. I'm running Windows 7 SP1. Does that pose a problem with the portable-net45+win8 import?
2. There is a newer version of Microsoft.NETCore.App : 1.0.1. Originally, project.json was referencing version 1.0.0, so I changed it. However, in Solution Explorer, I still see 1.0.0.

References:

http://www.alteridem.net/2016/06/18/nunit-3-testing-net-core-rc2/

Answer 1

It turns out that nearly everything I was seeing was simply tooling issues. I hope Microsoft addresses this soon; it's very confusing to see stale error messages in the Error List. Everything works fine when running dotnet build and dotnet test from the command line.

I am now targeting netstandard1.5 because, from what I'm able to gather, it has parity with .NET Framework 4.6.2 , which I was targeting prior to this work.

Here are the final versions of project.json :

Common\\project.json :

{
  "name": "<redacted>",
  "version": "2.0.0-*",
  "description": "<redacted>",
  "copyright": "<redacted>",
  "title": "<redacted>",
  "authors": [ "<redacted>" ],
  "language": "en-US",
  "packOptions": {
    "tags": [
      "GM",
      "UAS",
      "Common"
    ],
    "iconUrl": "<redacted>",
    "repository": {
      "type": "git",
      "url": "<redacted>"
    }
  },
  "buildOptions": {
    "xmlDoc": true,
    "compile": {
      "include": [
        "GlobalAssemblyInfo.cs"
      ]
    }
  },
  "dependencies": {
    "NETStandard.Library": "1.6.0"
  },
  "frameworks": {
    "netstandard1.5": {}
  }
}

UnitTests\\project.json :

{
  "version": "0.0.0",
  "testRunner": "nunit",
  "dependencies": {
    "NUnit": "3.4.0",
    "dotnet-test-nunit": "3.4.0-beta-2",
    "Common": {
      "target": "project"
    }
  },
  "frameworks": {
    "netcoreapp1.0": {
      "imports": "portable-net45+win8",
      "dependencies": {
        "Microsoft.NETCore.App": {
          "version": "1.0.0-*",
          "type": "platform"
        }
      }
    }
  }
}