Jacoco report workflow added.

.github/workflows/jacoco_report.yml

@@ -0,0 +1,33 @@
+# A Github action that publishes the JaCoCo report as a comment
+
+name: Measure coverage
+
+on:
+  push:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      push: write
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up JDK 1.8
+        uses: actions/setup-java@v1
+        with:
+          java-version: '1.8'
+      - name: Run Coverage
+        run: |
+          chmod +x gradlew
+          ./gradlew testCoverage
+
+      - name: Jacoco Report
+        id: jacoco
+        uses: madrapps/jacoco-report@v1.6.1
+        with:
+          paths: ${{ github.workspace }}/build/site/jacoco/jacoco.xml
+          token: ${{ secrets.GITHUB_TOKEN }}
+          min-coverage-overall: 40
+          min-coverage-changed-files: 60
+          title: Code Coverage
+          update-comment: true