Use dotnet test since the dotnet xunit test runner has been deprecated (PowerShell#7980)

Author: bergmeister

build.psm1

@@ -1369,13 +1369,6 @@ function Start-PSxUnit {
         throw "PowerShell must be built before running tests!"
     }
 
-    if (Test-Path $SequentialTestResultsFile) {
-        Remove-Item $SequentialTestResultsFile -Force -ErrorAction SilentlyContinue
-    }
-    if (Test-Path $ParallelTestResultsFile) {
-        Remove-Item $ParallelTestResultsFile -Force -ErrorAction SilentlyContinue
-    }
-
     try {
         Push-Location $PSScriptRoot/test/csharp
 
@@ -1413,8 +1406,10 @@ function Start-PSxUnit {
         }
 
         # Run sequential tests first, and then run the tests that can execute in parallel
-        dotnet xunit -configuration $Options.configuration -xml $SequentialTestResultsFile -namespace "PSTests.Sequential" -parallel none
-
+        if (Test-Path $SequentialTestResultsFile) {
+            Remove-Item $SequentialTestResultsFile -Force -ErrorAction SilentlyContinue
+        }
+        dotnet test --configuration $Options.configuration --filter FullyQualifiedName~PSTests.Sequential -p:ParallelizeTestCollections=false --test-adapter-path:. "--logger:xunit;LogFilePath=$SequentialTestResultsFile"
         Publish-TestResults -Path $SequentialTestResultsFile -Type 'XUnit' -Title 'Xunit Sequential'
 
         $extraParams = @()
@@ -1430,7 +1425,10 @@ function Start-PSxUnit {
             )
         }
 
-        dotnet xunit -configuration $Options.configuration -xml $ParallelTestResultsFile -namespace "PSTests.Parallel" -nobuild @extraParams
+        if (Test-Path $ParallelTestResultsFile) {
+            Remove-Item $ParallelTestResultsFile -Force -ErrorAction SilentlyContinue
+        }
+        dotnet test --configuration $Options.configuration --filter FullyQualifiedName~PSTests.Parallel --no-build  --test-adapter-path:. "--logger:xunit;LogFilePath=$ParallelTestResultsFile"
         Publish-TestResults -Path $ParallelTestResultsFile -Type 'XUnit' -Title 'Xunit Parallel'
     }
     finally {

test/csharp/csharp.tests.csproj

@@ -24,8 +24,7 @@
     <PackageReference Include="xunit" Version="2.4.0" />
     <PackageReference Include="Xunit.SkippableFact" Version="1.3.12" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.0" />
-    <!-- DotNetCliToolReference element specifies the CLI tool that the user wants to restore in the context of the project. -->
-    <DotNetCliToolReference Include="dotnet-xunit" Version="2.4.0-beta.1.build3958" />
+    <PackageReference Include="XunitXml.TestLogger" Version="2.0.0" />
   </ItemGroup>
 
 </Project>

test/hosting/hosting.tests.csproj

@@ -16,8 +16,7 @@
 
   <ItemGroup>
     <PackageReference Include="xunit" Version="2.4.0" />
-    <!-- DotNetCliToolReference element specifies the CLI tool that the user wants to restore in the context of the project. -->
-    <DotNetCliToolReference Include="dotnet-xunit" Version="2.3.1" />
+    <PackageReference Include="XunitXml.TestLogger" Version="2.0.0" />
     <!-- The version of Microsoft.PowerShell.SDK should be the version we are releasing, so the tests use the correct SDK before publishing to NuGet.org -->
     <PackageReference Include="Microsoft.PowerShell.SDK" Version="6.1.0" />
     <PackageReference Include="Xunit.SkippableFact" Version="1.3.6" />