Enabling .NET 9 tests for SF SDK packages (#390)

Enabling tests for .NET 9 builds. 
Microsoft.ServiceFabric.Services.Remoting.Testing has been modified to be compatible with the now deprecated BinaryFormatter. 
The build script and build pipeline have been modified to mitigate the absence of .NET 9 SDK in the pipeline image. These changes will be reverted once full support for .NET 9 is available.

.github/workflows/build.yml

@@ -21,9 +21,13 @@ jobs:
       TEST_RESULT_DIR: drop\testresults
     steps:
       - uses: actions/checkout@v1
+      - name: Setup dotnet
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '9.0.x'
       - name: Build Everything
         shell: powershell
-        run: ./build.ps1
+        run: dotnet build buildAll.proj
       - name: Run Tests
         run: dotnet test code.sln --configuration release --nologo --settings test\unittests\default.runsettings --results-directory ${{ env.TEST_RESULT_DIR }} --logger trx
       - name: upload artifacts

test/unittests/Microsoft.ServiceFabric.Actors.StateMigration.Tests/Microsoft.ServiceFabric.Actors.StateMigration.Tests.csproj

@@ -5,7 +5,7 @@
     <ProjectGuid>{1BDC4681-FDBA-4E55-A247-5F779627A4D7}</ProjectGuid>
     <AssemblyName>Microsoft.ServiceFabric.Actors.StateMigration.Tests</AssemblyName>
     <RootNamespace>$(AssemblyName)</RootNamespace>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="FluentAssertions" Version="6.12.0" />

test/unittests/Microsoft.ServiceFabric.Actors.Tests/Microsoft.ServiceFabric.Actors.Tests.csproj

@@ -5,7 +5,7 @@
     <ProjectGuid>{63B58D31-66BB-4879-B4F1-0969FA3F4464}</ProjectGuid>
     <AssemblyName>Microsoft.ServiceFabric.Actors.Tests</AssemblyName>
     <RootNamespace>$(AssemblyName)</RootNamespace>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="FluentAssertions" Version="6.12.0" />

test/unittests/Microsoft.ServiceFabric.Services.Remoting.Tests/Microsoft.ServiceFabric.Services.Remoting.Tests.csproj

@@ -5,7 +5,8 @@
     <ProjectGuid>{AE4034AC-27BC-43B8-9176-068B4794E25E}</ProjectGuid>
     <AssemblyName>Microsoft.ServiceFabric.Services.Remoting.Tests</AssemblyName>
     <RootNamespace>$(AssemblyName)</RootNamespace>
-   <TargetFramework>net6.0</TargetFramework>
+   <TargetFramework>net9.0</TargetFramework>
+   <EnableUnsafeBinaryFormatterSerialization>true</EnableUnsafeBinaryFormatterSerialization>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="FluentAssertions" Version="6.12.0" />
@@ -20,4 +21,9 @@
   <ItemGroup>
     <ProjectReference Include="$(RepoRoot)src\netstandard\Microsoft.ServiceFabric.Services.Remoting\Microsoft.ServiceFabric.Services.Remoting_netstandard.csproj" />
   </ItemGroup>
+  <ItemGroup>
+    <!-- BinaryFormatter compatibility package -->
+    <!-- The need for this package is documented in https://learn.microsoft.com/en-us/dotnet/standard/serialization/binaryformatter-migration-guide/compatibility-package-->
+    <PackageReference Include="System.Runtime.Serialization.Formatters" Version="9.0.0-*" />
+  </ItemGroup>
 </Project>

test/unittests/Microsoft.ServiceFabric.Services.Tests/Microsoft.ServiceFabric.Services.Tests.csproj

@@ -5,7 +5,7 @@
     <ProjectGuid>{ECB3825D-B309-4C76-A20D-76544459F611}</ProjectGuid>
     <AssemblyName>Microsoft.ServiceFabric.Services.Tests</AssemblyName>
     <RootNamespace>$(AssemblyName)</RootNamespace>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="FluentAssertions" Version="6.12.0" />