Add .NET 10 support to test project and fix CI workflow

Root cause: Test project only targeted net8/9 while main library targets net8/9/10.
This meant NET10-specific code paths were never tested, causing coverage gaps.

Changes:
- Add net10.0 to test project TargetFrameworks
- Add Microsoft.AspNetCore.Mvc.Testing 10.0.0 package for net10
- Disable Microsoft Testing Platform (xunit compatibility issue with .NET 10)
- Update CI to collect coverage from both net9 (fallback) and net10 (native)
- Merge coverage reports to get complete picture of both code paths

Author: ANcpLua

.github/workflows/tests.yml

@@ -38,18 +38,35 @@ jobs:
           dotnet test SWEN3.Paperless.RabbitMq.sln --no-build --configuration Release \
             --logger:"console;verbosity=detailed"
 
-      - name: Run tests with coverage (net9.0 only for reporting)
+      - name: Run tests with coverage on net9.0 (fallback path)
         run: |
           dotnet test SWEN3.Paperless.RabbitMq.Tests/SWEN3.Paperless.RabbitMq.Tests.csproj \
             --no-build \
             --configuration Release \
             --framework net9.0 \
             --collect:"XPlat Code Coverage" \
-            --results-directory ./coverage
+            --results-directory ./coverage-net9
+
+      - name: Run tests with coverage on net10.0 (NET10 path)
+        run: |
+          dotnet test SWEN3.Paperless.RabbitMq.Tests/SWEN3.Paperless.RabbitMq.Tests.csproj \
+            --no-build \
+            --configuration Release \
+            --framework net10.0 \
+            --collect:"XPlat Code Coverage" \
+            --results-directory ./coverage-net10
+
+      - name: Merge coverage reports
+        run: |
+          dotnet tool install -g dotnet-reportgenerator-globaltool
+          reportgenerator \
+            -reports:"./coverage-net9/**/coverage.cobertura.xml;./coverage-net10/**/coverage.cobertura.xml" \
+            -targetdir:./coverage-merged \
+            -reporttypes:Cobertura
 
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
-          files: ./coverage/**/coverage.cobertura.xml
+          files: ./coverage-merged/Cobertura.xml
           fail_ci_if_error: false

SWEN3.Paperless.RabbitMq.Tests/SWEN3.Paperless.RabbitMq.Tests.csproj

@@ -1,12 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net8.0;net9.0</TargetFrameworks>
+    <TargetFrameworks>net8.0;net9.0;net10.0</TargetFrameworks>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <LangVersion>latestMajor</LangVersion>
     <IsPackable>false</IsPackable>
     <IsTestProject>true</IsTestProject>
+    <IsTestingPlatformApplication>false</IsTestingPlatformApplication>
   </PropertyGroup>
 
   <ItemGroup>
@@ -34,6 +35,10 @@
   <ItemGroup Condition="'$(TargetFramework)' == 'net9.0'">
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="9.0.0"/>
   </ItemGroup>
+
+  <ItemGroup Condition="'$(TargetFramework)' == 'net10.0'">
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="10.0.0"/>
+  </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\SWEN3.Paperless.RabbitMq\SWEN3.Paperless.RabbitMq.csproj"/>
   </ItemGroup>