Feature: Add code coverage reporting

.github/workflows/build.yml

@@ -9,6 +9,8 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
+    permissions:
+      contents: write
     steps:
       - uses: actions/checkout@v6
         with:
@@ -24,8 +26,46 @@ jobs:
       - name: Build
         run: dotnet build src/Endpointer.slnx --no-restore -c Release
 
-      - name: Test
-        run: dotnet test --solution src/Endpointer.slnx --no-build -c Release
+      - name: Test with Coverage
+        run: |
+          dotnet tool install -g dotnet-coverage
+          dotnet-coverage collect -s src/coverage.runsettings -f cobertura -o ./coverage/coverage.cobertura.xml "dotnet test --solution src/Endpointer.slnx --no-build -c Release --verbosity normal"
+
+      - name: Generate Coverage Report
+        run: |
+          dotnet tool install -g dotnet-reportgenerator-globaltool
+          reportgenerator -reports:./coverage/coverage.cobertura.xml -targetdir:./coverage/report -reporttypes:"MarkdownSummaryGithub;Badges" -assemblyfilters:"+Endpointer"
+
+      - name: Add Coverage to Job Summary
+        if: always()
+        run: cat ./coverage/report/SummaryGithub.md >> $GITHUB_STEP_SUMMARY
+
+      - name: Publish Coverage Badge
+        if: github.ref == 'refs/heads/main' && github.event_name == 'push'
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+
+          mkdir -p /tmp/badges
+          cp ./coverage/report/badge_linecoverage.svg /tmp/badges/
+          cp ./coverage/report/badge_branchcoverage.svg /tmp/badges/
+
+          if git ls-remote --exit-code --heads origin coverage; then
+            git fetch origin coverage:coverage
+            git switch coverage
+          else
+            git switch --orphan coverage
+          fi
+
+          cp /tmp/badges/*.svg .
+          git add badge_linecoverage.svg badge_branchcoverage.svg
+
+          if git diff --staged --quiet; then
+            echo "No changes to coverage badges"
+          else
+            git commit -m "Update coverage badges"
+            git push origin coverage
+          fi
 
       - name: Pack
         run: dotnet pack src/Endpointer/Endpointer.csproj --no-build -c Release -o ./artifacts

.gitignore

@@ -43,6 +43,7 @@ ScaffoldingReadMe.txt
 ~$*
 *~
 CodeCoverage/
+coverage/
 
 # MSBuild Binary and Structured Log
 *.binlog

README.md

@@ -1,10 +1,13 @@
 # Endpointer
 
 [![Build](https://github.com/stephanprobst/Endpointer/actions/workflows/build.yml/badge.svg)](https://github.com/stephanprobst/Endpointer/actions/workflows/build.yml)
+[![Coverage](https://raw.githubusercontent.com/stephanprobst/Endpointer/coverage/badge_linecoverage.svg)](https://github.com/stephanprobst/Endpointer)
 [![NuGet](https://img.shields.io/nuget/v/Endpointer.svg)](https://www.nuget.org/packages/Endpointer/)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
-[![netstandard2.0](https://img.shields.io/badge/netstandard-2.0-blue)](https://docs.microsoft.com/en-us/dotnet/standard/net-standard)
 [![Roslyn](https://img.shields.io/badge/Roslyn-Source%20Generator-blueviolet)](https://docs.microsoft.com/en-us/dotnet/csharp/roslyn-sdk/)
+[![.NET 8](https://img.shields.io/badge/.NET-8.0-blue)](https://dotnet.microsoft.com/)
+[![.NET 9](https://img.shields.io/badge/.NET-9.0-blue)](https://dotnet.microsoft.com/)
+[![.NET 10](https://img.shields.io/badge/.NET-10.0-blue)](https://dotnet.microsoft.com/)
 
 A **C# source generator** for ASP.NET Core Minimal APIs implementing the **REPR (Request-Endpoint-Response) pattern**.
 

src/coverage.runsettings

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Configuration>
+    <CodeCoverage>
+        <ModulePaths>
+            <Include>
+                <ModulePath>.*Endpointer\.dll$</ModulePath>
+            </Include>
+            <Exclude>
+                <ModulePath>.*\.Tests\.dll$</ModulePath>
+                <ModulePath>.*TestWebApi\.dll$</ModulePath>
+                <ModulePath>.*Basic\.Reference\.Assemblies.*</ModulePath>
+            </Exclude>
+        </ModulePaths>
+        <Attributes>
+            <Exclude>
+                <Attribute>^System\.Diagnostics\.CodeAnalysis\.ExcludeFromCodeCoverageAttribute$</Attribute>
+                <Attribute>^System\.CodeDom\.Compiler\.GeneratedCodeAttribute$</Attribute>
+            </Exclude>
+        </Attributes>
+    </CodeCoverage>
+</Configuration>