diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2a502e80..d716b92f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,12 +8,28 @@ on:
 
 jobs:
   build:
-    runs-on: windows-latest
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@main
       - name: Setup .NET
         uses: actions/setup-dotnet@main
         with:
           global-json-file: ./global.json
-      - name: dotnet test
-        run: dotnet test ./src/nunit.analyzers.tests/
+
+      - name: .NET6.0 Test
+        run: |
+            dotnet tool install --global dotnet-coverage
+            dotnet test --collect:"XPlat Code Coverage" -f net6.0 ./src/nunit.analyzers.tests/
+            dotnet-coverage merge -o merged.cobertura.xml -f cobertura -r coverage.cobertura.xml
+
+      - name: .NET Framework Test
+        if: runner.os == 'Windows'
+        run: |
+            dotnet test -f net462 ./src/nunit.analyzers.tests/
+
+      - name: Post Coverage
+        uses: k1LoW/octocov-action@v0
+        if: runner.os == 'Linux'
diff --git a/.octocov.yml b/.octocov.yml
new file mode 100644
index 00000000..5fb4c563
--- /dev/null
+++ b/.octocov.yml
@@ -0,0 +1,21 @@
+coverage:
+  paths:
+  - merged.covertura.xml
+
+codeToTestRatio:
+  code:                  # files to count as "Code"
+    - 'src/nunit.analyzers/**/*.cs'
+  test:                  # files to count as "Test"
+    - 'src/nunit.analyzers.tests/**/*.cs'
+
+comment:
+  if: is_pull_request
+
+report:
+  if: is_default_branch
+  datastores:
+    - artifact://${GITHUB_REPOSITORY}
+
+diff:
+  datastores:
+    - artifact://${GITHUB_REPOSITORY}
diff --git a/src/nunit.analyzers.tests/nunit.analyzers.tests.csproj b/src/nunit.analyzers.tests/nunit.analyzers.tests.csproj
index c9343736..418ae826 100644
--- a/src/nunit.analyzers.tests/nunit.analyzers.tests.csproj
+++ b/src/nunit.analyzers.tests/nunit.analyzers.tests.csproj
@@ -5,6 +5,10 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="3.2.0">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.1.0" />
   </ItemGroup>
   
@@ -17,8 +21,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\nunit.analyzers\nunit.analyzers.csproj"
-                      OutputItemType="Analyzer" />
+    <ProjectReference Include="..\nunit.analyzers\nunit.analyzers.csproj" OutputItemType="Analyzer" />
   </ItemGroup>
 
 </Project>