Merge coverages

pom.xml

@@ -546,6 +546,36 @@
                 <outputDirectory>${jacoco.itReportFolder}</outputDirectory>
               </configuration>
             </execution>
+            <execution>
+              <id>merge</id>
+              <phase>verify</phase>
+              <goals>
+                <goal>merge</goal>
+              </goals>
+              <configuration>
+                <fileSets>
+                  <fileSet
+                    implementation="org.apache.maven.shared.model.fileset.FileSet">
+                    <directory>${project.basedir}</directory>
+                    <includes>
+                      <include>**/*.exec</include>
+                    </includes>
+                  </fileSet>
+                </fileSets>
+                <destFile>${project.build.directory}/coverage-reports/aggregate.exec</destFile>
+              </configuration>
+            </execution>
+            <execution>
+              <id>post-merge-report</id>
+              <phase>verify</phase>
+              <goals>
+                <goal>report</goal>
+              </goals>
+              <configuration>
+                <dataFile>${project.build.directory}/coverage-reports/aggregate.exec</dataFile>
+                <outputDirectory>${project.build.directory}/jacoco-aggregate</outputDirectory>
+              </configuration>
+            </execution>
           </executions>
         </plugin>
         <plugin>