Testfx: MSTest V2 doesn't output "TestCategory" to .TRX files (but V1 did/does)

[nohwnd]

_Originally posted by @MikePanitz-CCC in testfx-docs_

Hello!

Using MSTest.Framework (1.3.2) and the following code:

       [TestMethod]
        [TestCategory("Instructor chosen Grading Category Goes Here")]
        public void Basic_Fail_2()
        {
            bool correctAnswer = false;
            Assert.IsTrue(correctAnswer, "This message will be displayed when the test fails");
        }

I can run the tests from the command line to generate a .TRX / .XML file that includes the following

<TestDefinitions>
    <UnitTest name="Basic_Fail_2" storage="c:\mikesstuff\pers\dropbox\work\website\courses\bit143\lessons\lesson_03\nunit_materials\do_not_upload\mstest_using_dotnetcore\mstest_using_dotnetcore\bin\debug\netcoreapp2.0\mstest_using_dotnetcore.dll" id="468bfd94-b2bd-e0b2-dfaa-b056c00e7ae3">
      <TestCategory>
        <TestCategoryItem TestCategory="Instructor chosen Grading Category Goes Here" />
      </TestCategory>
      <Execution id="4afac95c-6b8a-4996-85d6-c8087f2e3203" />
      <TestMethod codeBase="C:\MikesStuff\Pers\Dropbox\Work\Website\Courses\BIT143\Lessons\Lesson_03\NUnit_Materials\DO_NOT_UPLOAD\MSTest_Using_DotNetCore\MSTest_Using_DotNetCore\bin\Debug\netcoreapp2.0\MSTest_Using_DotNetCore.dll" adapterTypeName="executor://mstestadapter/v2" className="MSTest_Using_DotNetCore.NUnit_Tests_Basic_Demonstrations" name="Basic_Fail_2" />
    </UnitTest>

However, when using MSTest V2 the .TRX file includes only this:

  <TestDefinitions>
   <UnitTest name="Basic_Fail_2" storage="c:\mikesstuff\pers\dropbox\work\website\courses\bit143\lessons\lesson_03\nunit_materials\do_not_upload\unittestdemo_core3_1\bin\debug\netcoreapp3.1\unittestdemo_core3_1.dll" id="daba9da9-b9e4-3614-3841-237a64d89d56">
      <Execution id="73801b0b-bd2c-4b31-ac77-2fb1e0417270" />
      <TestMethod codeBase="C:\MikesStuff\Pers\Dropbox\Work\Website\Courses\BIT143\Lessons\Lesson_03\NUnit_Materials\DO_NOT_UPLOAD\UnitTestDemo_Core3_1\bin\Debug\netcoreapp3.1\UnitTestDemo_Core3_1.dll" adapterTypeName="executor://mstestadapter/v2" className="PCE_StarterProject.NUnit_Tests_Basic_Demonstrations" name="Basic_Fail_2" />
    </UnitTest>

(Note the missing TestCategory element, and therefore the missing TestCategoryItemchild element(s).)

I'd love to be able to 'tag' tests using the TestCategory attribute and have that attribute be accessible in the resulting .TRX file

[ghost]

In case it helps, here's the the .CSPROJ file for V2 (which does _not_ include TestCategory in the output file):

<Project Sdk="Microsoft.NET.Sdk">
you
  <PropertyGroup>
    <TargetFramework>netcoreapp3.1</TargetFramework>

    <IsPackable>false</IsPackable>

    <StartupObject>PCE_StarterProject.Program</StartupObject>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
    <PackageReference Include="MSTest.TestAdapter" Version="2.1.0" />
    <PackageReference Include="MSTest.TestFramework" Version="2.1.0" />
    <PackageReference Include="coverlet.collector" Version="1.2.0" />
  </ItemGroup>

  <ItemGroup>
    <Folder Include="XML_OUTPUT\" />
  </ItemGroup>

</Project>

here's the .CSPROJ file for V1, which does _include_ TestCategory in the output file:

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>netcoreapp2.0</TargetFramework>

    <IsPackable>false</IsPackable>

    <StartupObject>MSTest_Using_DotNetCore.Program</StartupObject>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.9.0" />
    <PackageReference Include="MSTest.TestAdapter" Version="1.3.2" />
    <PackageReference Include="MSTest.TestFramework" Version="1.3.2" />
  </ItemGroup>

</Project>

The command line that I used to generate the .TRX file looks more-or-less like this:

"C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\Common7\IDE\CommonExtensions\Microsoft\TestWindow\vstest.console.exe" bin\Debug\netcoreapp3.1\UnitTestDemo_Core3_1.dll /Logger:trx /ResultsDirectory:XML_OUTPUT