add code coverage and sonarcloud analysis

.github/workflows/maven.yml

@@ -1,4 +1,4 @@
-# This workflow will build a Java project with Maven
+# This workflow will build a Java project with Maven, check coverage with JaCoCo and analyze with sonarcloud
 # For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven
 
 name: Java CI with Maven
@@ -16,12 +16,32 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - name: Set up JDK 8
+      with:
+        fetch-depth: 0  # Shallow clones should be disabled for a better relevancy of analysis
+    - name: Set up JDK 11
       uses: actions/setup-java@v2
       with:
-        java-version: '8'
+        java-version: '11'
         distribution: 'adopt'
-    - name: Run tests
-      run: mvn --batch-mode test
-    - name: Build with Maven
-      run: mvn --batch-mode package --file pom.xml
+    - name: Cache SonarCloud packages
+      uses: actions/cache@v1
+      with:
+        path: ~/.sonar/cache
+        key: ${{ runner.os }}-sonar
+        restore-keys: ${{ runner.os }}-sonar
+    - name: Cache Maven packages
+      uses: actions/cache@v1
+      with:
+        path: ~/.m2
+        key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
+        restore-keys: ${{ runner.os }}-m2
+    - name: Build and analyze
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}  # Needed to get PR information, if any
+        SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
+      run: mvn -B org.jacoco:jacoco-maven-plugin:prepare-agent verify org.jacoco:jacoco-maven-plugin:report org.sonarsource.scanner.maven:sonar-maven-plugin:sonar
+    - name: Upload jar artifact
+      uses: actions/upload-artifact@v2
+      with:
+        name: artifacts
+        path: target/*.jar

README.md

@@ -4,6 +4,8 @@
 [![Build Status](https://img.shields.io/github/workflow/status/MieuxVoter/majority-judgment-library-java/Java%20CI%20with%20Maven)](https://github.com/MieuxVoter/majority-judgment-library-java/actions)
 [![Release](https://img.shields.io/github/v/release/MieuxVoter/majority-judgment-library-java?sort=semver)](https://github.com/MieuxVoter/majority-judgment-library-java/releases)
 [![Join the Discord chat at https://discord.gg/rAAQG9S](https://img.shields.io/discord/705322981102190593.svg)](https://discord.gg/rAAQG9S)
+[![Coverage](https://sonarcloud.io/api/project_badges/measure?project=jeanpic_majority-judgment-library-java&metric=coverage)](https://sonarcloud.io/dashboard?id=jeanpic_majority-judgment-library-java)
+[![Quality Gate Status](https://sonarcloud.io/api/project_badges/measure?project=jeanpic_majority-judgment-library-java&metric=alert_status)](https://sonarcloud.io/dashboard?id=jeanpic_majority-judgment-library-java)
 
 Test-driven java library to help deliberate using [Majority Judgment](https://mieuxvoter.fr/index.php/decouvrir/?lang=en).
 

pom.xml

@@ -13,8 +13,11 @@
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <maven.compiler.source>1.7</maven.compiler.source>
-    <maven.compiler.target>1.7</maven.compiler.target>
+    <maven.compiler.source>1.8</maven.compiler.source>
+    <maven.compiler.target>1.8</maven.compiler.target>
+    <sonar.projectKey>jeanpic_majority-judgment-library-java</sonar.projectKey>
+    <sonar.organization>jeanpic</sonar.organization>
+    <sonar.host.url>https://sonarcloud.io</sonar.host.url>
   </properties>
 
   <dependencies>
@@ -56,10 +59,6 @@
         <plugin>
           <artifactId>maven-compiler-plugin</artifactId>
           <version>3.8.0</version>
-          <configuration>
-            <source>1.8</source>
-            <target>1.8</target>
-          </configuration>
         </plugin>
         <plugin>
           <artifactId>maven-surefire-plugin</artifactId>