ci: collect code coverage (#656)

Author: fgreinacher

.github/workflows/ci.yml

@@ -18,7 +18,42 @@ jobs:
         with:
           fetch-depth: 0
       - name: Run tests
-        run: dotnet test --verbosity normal
+        run: dotnet test --verbosity normal --collect:"XPlat Code Coverage"
+      - name: Upload coverage
+        uses: actions/upload-artifact@v2
+        with:
+          name: Code coverage ${{ matrix.os }}
+          path: "**/coverage.cobertura.xml"
+  coverage:
+    name: Coverage
+    needs: [test]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v2
+      - uses: actions/download-artifact@v2
+        with:
+          name: Code coverage ubuntu-latest
+          path: coverage-ubuntu
+      - uses: actions/download-artifact@v2
+        with:
+          name: Code coverage windows-latest
+          path: coverage-windows
+      - uses: actions/download-artifact@v2
+        with:
+          name: Code coverage macos-latest
+          path: coverage-macos
+      - name: Generate coverage report
+        uses: danielpalme/ReportGenerator-GitHub-Action@4.7.1
+        with:
+          reports: "**/coverage.cobertura.xml"
+          targetdir: "coverage-report"
+          reporttypes: "Cobertura"
+      - name: Publish coverage report to Codacy
+        uses: codacy/codacy-coverage-reporter-action@master
+        with:
+          project-token: ${{ secrets.CODACY_PROJECT_TOKEN }}
+          coverage-reports: coverage-report/Cobertura.xml
   pack:
     name: Pack
     needs: [test]
@@ -28,10 +63,6 @@ jobs:
         uses: actions/checkout@v2
         with:
           fetch-depth: 0
-      - name: Install .NET Core 3.1 SDK
-        uses: actions/setup-dotnet@v1
-        with:
-          dotnet-version: "3.1.x"
       - name: Create packages
         run: dotnet pack --configuration Release --output ./packages
       - name: Upload a Build Artifact
@@ -53,14 +84,14 @@ jobs:
         with:
           name: NuGet packages
           path: packages
-      - name: Push packages        
+      - name: Push packages
         run: dotnet nuget push "packages/*.nupkg" --api-key ${{ secrets.NUGET_API_KEY }} --source https://api.nuget.org/v3/index.json
       - uses: dotnet/nbgv@v0.3.1
         id: nbgv
       - name: Create GitHub release
         uses: actions/create-release@v1
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:  
+        with:
           tag_name: v${{ steps.nbgv.outputs.SemVer2 }}
           release_name: v${{ steps.nbgv.outputs.SemVer2 }}

global.json

@@ -0,0 +1,6 @@
+{
+  "sdk": {
+    "version": "3.1.302",
+    "rollForward": "latestMinor"
+  }
+}

tests/System.IO.Abstractions.TestingHelpers.Tests/System.IO.Abstractions.TestingHelpers.Tests.csproj

@@ -21,6 +21,10 @@
     <ProjectReference Include="../../src/System.IO.Abstractions.TestingHelpers/System.IO.Abstractions.TestingHelpers.csproj" />
   </ItemGroup>
   <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="1.3.0">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.6.1" />
     <PackageReference Include="Moq" Version="4.14.5" />
     <PackageReference Include="nunit" Version="3.12.0" />

tests/System.IO.Abstractions.Tests/System.IO.Abstractions.Tests.csproj

@@ -12,6 +12,10 @@
     <ProjectReference Include="../../src/System.IO.Abstractions/System.IO.Abstractions.csproj" />
   </ItemGroup>
   <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="1.3.0">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.6.1" />
     <PackageReference Include="Moq" Version="4.14.5" />
     <PackageReference Include="nunit" Version="3.12.0" />