feat: add dotnet code coverage (#5403)

.github/workflows/dotnet-build.yml

@@ -46,8 +46,9 @@ jobs:
       - name: workflows has changes
         run: echo "workflows has changes"
         if: steps.filter.outputs.workflows == 'true'
+
   build:
-    name: Dotnet Build
+    name: Dotnet Build & Test
     needs: paths-filter
     if: needs.paths-filter.outputs.hasChanges == 'true'
     defaults:
@@ -64,35 +65,12 @@ jobs:
     - uses: actions/checkout@v4
       with:
         lfs: true
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v5
-      with:
-        python-version: ${{ matrix.python-version }}
-    - name: Install jupyter and ipykernel
-      run: |
-        python -m pip install --upgrade pip
-        python -m pip install jupyter
-        python -m pip install ipykernel
-    - name: list available kernels
-      run: |
-        python -m jupyter kernelspec list
-    - uses: astral-sh/setup-uv@v5
-      with:
-        enable-cache: true
-        version: "0.5.18"
-    - run: uv sync --locked --all-extras
-      working-directory: ./python
-    - name: Prepare python venv
-      run: |
-        source ${{ github.workspace }}/python/.venv/bin/activate
     - name: Setup .NET 8.0
       uses: actions/setup-dotnet@v4
       with:
         dotnet-version: '8.0.x'
     - name: Restore dependencies
-      run: |
-        # dotnet nuget add source --name dotnet-tool https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json --configfile NuGet.config
-        dotnet restore -bl
+      run: dotnet restore -bl
     - name: Format check
       run: |
         echo "Format check"
@@ -104,40 +82,43 @@ jobs:
         dotnet build --no-restore --configuration Release -bl /p:SignAssembly=true
     - name: Unit Test V1
       run: dotnet test --no-build -bl --configuration Release --filter "Category=UnitV1"
-    - name: Unit Test V2
-      run: dotnet test --no-build -bl --configuration Release --filter "Category=UnitV2"
-
-  grpc-unit-tests:
-    name: Dotnet Grpc unit tests
-    needs: paths-filter
-    if: needs.paths-filter.outputs.hasChanges == 'true'
-    defaults:
-      run:
-        working-directory: dotnet
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ ubuntu-latest ]
-    runs-on: ${{ matrix.os }}
-    timeout-minutes: 30
-    steps:
-    - uses: actions/checkout@v4
-      with:
-        lfs: true
-    - name: Setup .NET 8.0
-      uses: actions/setup-dotnet@v4
-      with:
-        dotnet-version: '8.0.x'
-    - name: Install dev certs
-      run:  dotnet --version && dotnet dev-certs https --trust
-    - name: Restore dependencies
+    - name: Unit Test V2 (With Coverage)
+      run: dotnet test --no-build -bl --configuration Release --filter "Category=UnitV2" --collect:"XPlat Code Coverage"
+    - name: Install Dev Certs for GRPC
+      if: matrix.os == 'ubuntu-latest'
+      run: dotnet dev-certs https --trust
+    - name: GRPC Tests (With Coverage)
+      if: matrix.os == 'ubuntu-latest'
+      run: dotnet test --no-build -bl --configuration Release --filter "Category=GRPC" --collect:"XPlat Code Coverage"
+    - name: Generate & Merge Coverage Report
+      if: matrix.os == 'ubuntu-latest'
       run: |
-        # dotnet nuget add source --name dotnet-tool https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json --configfile NuGet.config
-        dotnet restore -bl
-    - name: Build
-      run: dotnet build --no-restore --configuration Release -bl /p:SignAssembly=true
-    - name: GRPC tests
-      run: dotnet test --no-build -bl --configuration Release --filter "Category=GRPC"
+        # Install reportgenerator
+        dotnet tool install -g dotnet-reportgenerator-globaltool || dotnet tool update -g dotnet-reportgenerator-globaltool
+        # Ensure output directory exists
+        mkdir -p ${{ github.workspace }}/dotnet/coverage-report
+        # Merge all coverage reports and generate HTML + XML
+        reportgenerator \
+          -reports:${{ github.workspace }}/dotnet/**/TestResults/**/coverage.cobertura.xml \
+          -targetdir:${{ github.workspace }}/dotnet/coverage-report \
+          -reporttypes:"Cobertura;Html"
+        ls -R ${{ github.workspace }}/dotnet/coverage-report
+    - name: Upload Merged Coverage Report
+      if: matrix.os == 'ubuntu-latest'
+      uses: actions/upload-artifact@v4
+      with:
+        name: CodeCoverageReport
+        path: ${{ github.workspace }}/dotnet/coverage-report/
+        retention-days: 7
+    - name: Upload Coverage to Codecov
+      if: matrix.os == 'ubuntu-latest'
+      uses: codecov/codecov-action@v5
+      with:
+        files: ${{ github.workspace }}/dotnet/coverage-report/*.xml
+        flags: unittests
+        name: dotnet-codecov
+        fail_ci_if_error: true
+        token: ${{ secrets.CODECOV_TOKEN }}
 
   integration-test:
     strategy:

dotnet/test/Microsoft.AutoGen.Core.Grpc.Tests/Microsoft.AutoGen.Core.Grpc.Tests.csproj

@@ -8,6 +8,10 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="coverlet.collector">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
     <ProjectReference Include="..\..\src\Microsoft.AutoGen\Core\Microsoft.AutoGen.Core.csproj" />
     <ProjectReference Include="..\..\src\Microsoft.AutoGen\Core.Grpc\Microsoft.AutoGen.Core.Grpc.csproj" />
     <PackageReference Include="Microsoft.Extensions.Hosting" />

dotnet/test/Microsoft.AutoGen.Core.Tests/Microsoft.AutoGen.Core.Tests.csproj

@@ -8,6 +8,10 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="coverlet.collector">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
     <ProjectReference Include="..\..\src\Microsoft.AutoGen\Core\Microsoft.AutoGen.Core.csproj" />
     <PackageReference Include="Microsoft.Extensions.Hosting" />
   </ItemGroup>

dotnet/test/Microsoft.AutoGen.Runtime.Grpc.Tests/GrpcGatewayServiceTests.cs

@@ -12,7 +12,7 @@ using NewMessageReceived = Tests.Events.NewMessageReceived;
 
 namespace Microsoft.AutoGen.Runtime.Grpc.Tests;
 [Collection(ClusterCollection.Name)]
-[Trait("Category", "UnitV2")]
+[Trait("Category", "GRPC")]
 public class GrpcGatewayServiceTests
 {
     private readonly ClusterFixture _fixture;

dotnet/test/Microsoft.AutoGen.Runtime.Grpc.Tests/Microsoft.AutoGen.Runtime.Grpc.Tests.csproj

@@ -8,6 +8,10 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="coverlet.collector">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
     <PackageReference Include="Microsoft.AspNetCore.TestHost" />
     <PackageReference Include="Microsoft.Orleans.TestingHost" />
   </ItemGroup>