Use Traversal filtering of solution files

Author: ViktorHofer

Directory.Solution.props

@@ -0,0 +1,9 @@
+<Project>
+
+  <PropertyGroup>
+    <TraversalSkipUnsupportedProjects>true</TraversalSkipUnsupportedProjects>
+  </PropertyGroup>
+
+  <Import Sdk="Microsoft.Build.Traversal" Project="Sdk.props" />
+
+</Project>

Directory.Solution.targets

@@ -0,0 +1,15 @@
+<Project>
+
+  <Import Sdk="Microsoft.Build.Traversal" Project="Sdk.targets" />
+
+  <!-- Overwrite Traversal Sdk.targetse target to skip projects without even kicking-off evaluations. -->
+  <Target Name="GetProjectsToSkip">
+    <ItemGroup Condition="'$(Test)' == 'false'">
+      <ProjectToSkip Include="@(ProjectReference)"
+                     Message=""
+                     Condition="$([System.String]::new('%(ProjectReference.Identity)').EndsWith('.Tests.csproj'))"
+                     OriginalItemSpec="%(Identity)" />
+    </ItemGroup>
+  </Target>
+
+</Project>

global.json

@@ -7,6 +7,7 @@
     "allowPrerelease": true
   },
   "msbuild-sdks": {
-    "Microsoft.DotNet.Arcade.Sdk": "9.0.0-beta.23628.1"
+    "Microsoft.DotNet.Arcade.Sdk": "9.0.0-beta.23628.1",
+    "Microsoft.Build.Traversal": "4.1.0"
   }
 }