Revert "Revert "Fix tests running on version freeze (#10735)" (#10775)"

This reverts commit 312a2b8.

Author: YuliiaKovalova

src/BuildCheck.UnitTests/Microsoft.Build.BuildCheck.UnitTests.csproj

@@ -46,4 +46,30 @@
     </None>
   </ItemGroup>
 
+  <!-- This target creates packages needed for e2e testing. Inputs and outputs are defined to enable incremental builds. -->
+
+  <PropertyGroup Label="TestAssests">
+    <ArtifactsNonShippingPackagesDir>$(ArtifactsBinDir)Microsoft.Build.BuildCheck.UnitTests\CustomChecks</ArtifactsNonShippingPackagesDir>
+  </PropertyGroup>
+
+  <ItemGroup Label="TestAssets">
+    <ProjectsToPack Include="..\Build\Microsoft.Build.csproj" />
+    <ProjectsToPack Include="..\Framework\Microsoft.Build.Framework.csproj" />
+    <ProjectsToPack Include="..\StringTools\StringTools.csproj" />
+  </ItemGroup>
+
+  <Target Name="GetSourceFilesForPacking">
+    <ItemGroup>
+      <SourceFilesForPacking Include="%(ProjectsToPack.RootDir)%(ProjectsToPack.Directory)**\*.cs" />
+    </ItemGroup>
+  </Target>
+
+  <Target Name="MSBuildPackagesForTests"
+          AfterTargets="Build"
+          DependsOnTargets="GetSourceFilesForPacking"
+          Inputs="@(ProjectsToPack);@(SourceFilesForPacking)"
+          Outputs="$(ArtifactsNonShippingPackagesDir)\Microsoft.Build.$(Version).nupkg;$(ArtifactsNonShippingPackagesDir)\Microsoft.Build.Framework.$(Version).nupkg;$(ArtifactsNonShippingPackagesDir)\Microsoft.NET.StringTools.$(Version).nupkg">
+    <Exec Command="dotnet pack &quot;%(ProjectsToPack.Identity)&quot; -o &quot;$(ArtifactsNonShippingPackagesDir)&quot; -p:PackageVersion=$(PackageVersion)" />
+  </Target>
+  
 </Project>

src/BuildCheck.UnitTests/TestAssets/Common/CommonTest.props

@@ -11,7 +11,7 @@
 
   <!-- In the real world scenario, the dependencies are added as Nuget PackageReference, modified for test purposes only. -->
   <ItemGroup>
-    <ProjectReference Include="..\..\..\Build\Microsoft.Build.csproj" IncludeInPackage="true" />
+    <ProjectReference Include="..\..\..\Build\Microsoft.Build.csproj" />
   </ItemGroup>
 
 </Project>