🔧 Migrates test settings to modern Testing Platform

tests/Directory.Build.props

@@ -10,19 +10,9 @@
     <IsTestProject>true</IsTestProject>
   </PropertyGroup>
 
-  <ItemGroup>
-    <Using Include="Xunit" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <AssemblyAttribute Include="System.Diagnostics.CodeAnalysis.ExcludeFromCodeCoverage" />
-  </ItemGroup>
-
-  <ItemGroup Label="Loggers">
-    <VSTestLogger
-      Include="trx%3BLogFileName=TestResults-$(TargetFramework)-$(MSBuildProjectName).trx" />
-    <VSTestLogger
-      Include="html%3BLogFileName=TestResults-$(TargetFramework)-$(MSBuildProjectName).html" />
+  <ItemGroup Label="xUnit Configuration" Condition="Exists('$(MSBuildThisFileDirectory)\..\xunit.runner.json') AND $(IsTestProject)=='True' AND @(PackageReference->StartsWith('xunit')->Count()) &gt; 0">
+    <Content Include="$(MSBuildThisFileDirectory)\..\xunit.runner.json" Link="xunit.runner.json"
+      CopyToOutputDirectory="PreserveNewest" Visible="false" />
   </ItemGroup>
 
   <PropertyGroup Condition="$(ContinuousIntegrationBuild) == 'true'">