ci: Generate coverage report for the testsuite

Install gcc package that provides gcovr

Author: jajik

.github/workflows/ci.yml

@@ -223,6 +223,7 @@ jobs:
       FOREVER_PAUSE: 100
       ITERATION_COUNT: 2
       TOMCAT_CYCLE_COUNT: 2
+      CODE_COVERAGE: 1
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -249,9 +250,16 @@ jobs:
         if: always()
         with:
           name: Test logs
-          path: |
-            test/logs/*
+          path: test/logs/*
           retention-days: 7
+    # Preserve coverage data if defined
+      - name: Preserve coverage files
+        if: env.CODE_COVERAGE
+        uses: actions/upload-artifact@v4
+        with:
+            name: Coverage
+            path: test/coverage/*
+            retention-days: 7
 
   perl-tests:
     runs-on: ubuntu-latest

test/testsuite.sh

@@ -128,11 +128,14 @@ if [ $CODE_COVERAGE ]; then
     echo "Generating test coverage..."
     httpd_start > /dev/null 2>&1
     docker exec $MPC_NAME /usr/local/apache2/bin/apachectl stop
+
     for f in $(ls coverage/*.json); do
         docker cp -q $f $MPC_NAME:/coverage/
     done
+
     docker exec $MPC_NAME sh -c 'cd /native; gcovr --add-tracefile "/coverage/coverage-*.json" --html-details /coverage/test-coverage.html'
     docker cp $MPC_NAME:/coverage/ .
+
     httpd_remove
 fi