title: Visual Studio Test Runner complains that it cannot find 'xunit.core, Version=2.x.0'
body: <p>I'm trying to create a new PCL library (along with a new Windows Universal app), and I've created a new project to start writing my unit tests using xUnit.  I've added nuget references to <code>xunit</code>, as well as <code>xunit.runner.visualstudio</code>.  I'm using Visual Studio 2015 RTM, as well as Resharper 9.1, and bother of them give me a similar error when trying to run or discover the unit tests.  This is from visual studio:</p>
  <blockquote>
  <p>------ Discover test started ------</p>
  <p>[xUnit.net 00:00:00.2661814] Skipping: WinBlur.NewsBlurClient.Tests (could not find dependent assembly 'xunit.core, Version=2.1.0')</p>
  <p>[xUnit.net 00:00:00.2235684] Skipping: WinBlur.NewsBlurClient.Tests (could not find dependent assembly 'xunit.core, Version=2.1.0')</p>
  <p>========== Discover test finished: 0 found (0:00:00.6920785) ==========</p>
  </blockquote>
  <p>This output shows trying to use the latest beta versions of 2.1, but I've tried both the current release version (2.0.0) as well and I get the same result.</p>
  <p>Here's my <code>project.json</code> file:</p>
  <pre><code>{
    &quot;supports&quot;: {
      &quot;net46.app&quot;: {},
      &quot;uwp.10.0.app&quot;: {}
    },
    &quot;dependencies&quot;: {
      &quot;Microsoft.NETCore&quot;: &quot;5.0.0&quot;,
      &quot;Microsoft.NETCore.Portable.Compatibility&quot;: &quot;1.0.0&quot;,
      &quot;xunit&quot;: &quot;2.0.0&quot;,
      &quot;xunit.core&quot;: &quot;2.0.0&quot;,
      &quot;xunit.assert&quot;:  &quot;2.0.0&quot;,
      &quot;xunit.runner.visualstudio&quot;: &quot;2.0.1&quot;
    },
    &quot;frameworks&quot;: {
      &quot;dotnet&quot;: {
        &quot;imports&quot;: &quot;portable-net452+win81&quot;
      }
    }
  }
  </code></pre>
  <p>When I added the nuget reference to xunit, it did not originally add the dependencies for <code>xunit.core</code> and <code>xunit.assert</code>, so I added those myself to see if it helped, but no luck.</p>