feat(unit-test) - Add code coverage check

.github/workflows/docker-ci.yml

@@ -11,38 +11,51 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-
+      # 1. Get the source code
       - name: Checkout Code
         uses: actions/checkout@v4
 
+      # 2. Setup Java 21 with Maven Caching
       - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
           java-version: '21'
           distribution: 'temurin'
           cache: maven
 
+      # 3. Run Tests & Coverage Gate
       - name: Run Unit Tests
-        run: mvn test
-
+        run: mvn clean test
+
+      # 4. Generate Coverage Summary for GitHub UI
+      - name: Add Coverage Summary to Action
+        uses: irongut/CodeCoverageSummary@v1.3.0
+        with:
+          filename: target/site/jacoco/jacoco.xml
+          badge: true
+          format: markdown
+          output: both
+
+      - name: Write Summary to GitHub Step
+        run: cat code-coverage-results.md >> $GITHUB_STEP_SUMMARY
+
+      # 5. Prepare Docker
       - name: Login to Docker Hub
         uses: docker/login-action@v3
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
-
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
-
+      # 6. Build and Push (Only if tests passed)
       - name: Build and Push Image
         uses: docker/build-push-action@v5
         with:
-          context: .               
-          file: ./Dockerfile 
-          push: true               
-
+          context: .
+          file: ./Dockerfile
+          push: true
           tags: |
             ${{ secrets.DOCKERHUB_USERNAME }}/docker-test:latest
             ${{ secrets.DOCKERHUB_USERNAME }}/docker-test:${{ github.sha }}

docker-compose.yml

@@ -17,7 +17,6 @@ services:
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock
     environment:
-      # If your Docker Hub repo is private, you need these:
       - REPO_USER=${DOCKERHUB_USERNAME}
       - REPO_PASS=${DOCKERHUB_TOKEN}
     command: --interval 30 --cleanup # Check for updates every 30 seconds

dockerfile

@@ -29,5 +29,4 @@ USER appuser
 COPY --from=build /app/ci-cd-docker-github/target/*.jar app.jar
 
 # Standard Java 25 execution
-# Optional: Added flags for better container memory management
 ENTRYPOINT ["java", "-XX:+UseContainerSupport", "-Xmx512m", "-jar", "app.jar"]

pom.xml

@@ -42,6 +42,46 @@
     </dependencies>
     <build>
         <plugins>
+            <plugin>
+                <groupId>org.jacoco</groupId>
+                <artifactId>jacoco-maven-plugin</artifactId>
+                <version>0.8.12</version>
+                <executions>
+                    <execution>
+                        <id>prepare-agent</id>
+                        <goals>
+                            <goal>prepare-agent</goal>
+                        </goals>
+                    </execution>
+                    <execution>
+                        <id>report</id>
+                        <phase>test</phase>
+                        <goals>
+                            <goal>report</goal>
+                        </goals>
+                    </execution>
+                    <execution>
+                        <id>check-coverage</id>
+                        <goals>
+                            <goal>check</goal>
+                        </goals>
+                        <configuration>
+                            <rules>
+                                <rule>
+                                    <element>BUNDLE</element>
+                                    <limits>
+                                        <limit>
+                                            <counter>LINE</counter>
+                                            <value>COVEREDRATIO</value>
+                                            <minimum>0.80</minimum>
+                                        </limit>
+                                    </limits>
+                                </rule>
+                            </rules>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
             <plugin>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>

src/main/java/com/dhurba/docker/Application.java

@@ -5,7 +5,7 @@
 
 @SpringBootApplication
 public class Application {
-    static void main(String[] args) {
+    public static void main(String[] args) {
         SpringApplication.run(Application.class, args);
     }
 }

src/test/java/com/dhurba/docker/service/DummyServiceTest.java

@@ -28,7 +28,7 @@ void fetchAll() {
         when(modelRepo.findAll()).thenReturn(Collections.singletonList(createModel()));
         List<ModelDto> modelDtos = dummyService.fetchAll();
         verify(modelRepo).findAll();
-        assert modelDtos.size() == 9;
+        assert modelDtos.size() == 1;
     }
 
     private Model createModel() {