title: Cannot access files from xunit in WinRT (The process has no package identity)
body: <p>I'm writing some unit tests (with <strong>xunit</strong>) to my <strong>WinRT</strong> project.</p>
  
  <p>I have prepared text file with json content. I put this file into my Test project and now I want to read file, parse json and check some stuff. It's working for MS Test but failing for xUnit.</p>
  
  <p>When I run test writen with <strong>xUnit</strong> I receive:</p>
  
  <p>System.InvalidOperationException
  The process has no package identity. (Exception from HRESULT: 0x80073D54)</p>
  
  <pre class="lang-C# prettyprint-override"><code>[Fact]
  public async Task ProjectFile()
  {
      var folder = Windows.ApplicationModel.Package.Current.InstalledLocation;
      folder = await folder.GetFolderAsync("SampleData");
  
      var file = await folder.GetFileAsync("companies.txt");
      Assert.NotNull(file);
  
      var result = await Windows.Storage.FileIO.ReadTextAsync(file);
      Assert.True(result.Length &gt; 0);
  }
  </code></pre>
  
  <p>My IDE:</p>
  
  <ul>
  <li>Visual Studio 2012 Pro Update 3</li>
  <li>WinRT project</li>
  <li>ReSharper 7.1.3</li>
  <li>xUnit</li>
  </ul>
  
  <p>Anyone can help here?</p>