[WIP] Coverage test

.github/workflows/ci.yml

@@ -65,4 +65,12 @@ jobs:
         run: |
           echo "# ❔ <b>Test results</b>" >> $GITHUB_STEP_SUMMARY
           dotnet test --no-build
-        continue-on-error: true
+        continue-on-error: true
+
+      - name: 📝 Code Coverage report
+        run: |
+          dotnet tool install --global dotnet-reportgenerator-globaltool --version 5.1.23
+          reportgenerator -reports:${{github.workspace}}/tests/results/coverage.*.xml -targetdir:${{github.workspace}}/report -reporttypes:MarkdownSummaryGithub "-filefilters:-*.g.cs" -verbosity:Warning
+          sed -i 's/# Summary/## 📝 Code Coverage/g' ${{github.workspace}}/report/SummaryGithub.md
+          sed -i 's/## Coverage/### Code Coverage details/g' ${{github.workspace}}/report/SummaryGithub.md
+          cat ${{github.workspace}}/report/*.md >> $GITHUB_STEP_SUMMARY

tests/Directory.Build.props

@@ -78,4 +78,16 @@
     </VSTestLogger>
   </PropertyGroup>
 
+  <PropertyGroup Label="Test output: All">
+    <!-- Collect code coverage -->
+    <CollectCoverage>true</CollectCoverage>
+    <!-- Save code coverage analysis using opencover format in same folder than the unit test rsults -->
+    <CoverletOutputFormat>json,lcov,opencover</CoverletOutputFormat>
+    <CoverletOutput>$([MSBuild]::EnsureTrailingSlash($(VSTestResultsDirectory)))</CoverletOutput>
+    <!-- Ensure that sequential runs are merged together -->
+    <MergeWith>$([System.IO.Path]::Combine($(MSBuildThisFileDirectory), 'results', 'coverage.$(TargetFramework).json'))</MergeWith>
+    <!-- Exclude code marked with specific attributes -->
+    <ExcludeByAttribute>ObsoleteAttribute,GeneratedCodeAttribute,CompilerGeneratedAttribute,ExcludeFromCodeCoverage</ExcludeByAttribute>
+  </PropertyGroup>
+
 </Project>