This is how we solved it:
Summary:
- Service and Service-itest projects are two independent modules.
- Service has unit tests which coverage is reported by Sonar.
- Service-itests uses Cargo to load the service WAR and run the integration tests. The code coverage collected in this execution is reported one level above. In this way, the coverage for the ITests is collected and merged cross-module and reported at the parent project pom level. We also like this approach becasue it allows us to have different ITests projects (for example, one with Cargo loading the app and another using JBehave), and they can evolve independently.
In the parent pom:
<modules>
<module>service</module>
<module></module>
<module>service-itest</module>
</modules>
<!-- Sonar -->
<sonar.java.coveragePlugin>jacoco</sonar.java.coveragePlugin>
<sonar.dynamicAnalysis>reuseReports</sonar.dynamicAnalysis>
<!-- The destination file for the code coverage report has to be set to
the same value in the parent pom and in each module pom. Then JaCoCo will
add up information in the same report, so that, it will give the cross-module
code coverage. -->
<sonar.jacoco.itReportPath>${project.basedir}/../target/jacoco-itests.exec</sonar.jacoco.itReportPath>
...
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>0.6.3.201306030806</version>
</plugin>
</plugins>
</pluginManagement>
...
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<configuration>
<includes>
<include>our.project.packages.*</include>
</includes>
</configuration>
<executions>
<execution>
<id>pre-test</id>
<goals>
<goal>prepare-agent</goal>
</goals>
</execution>
<execution>
<id>post-test</id>
<phase>test</phase>
<goals>
<goal>report</goal>
</goals>
</execution>
</executions>
</plugin>
And in the pom.xml file of the -itest project:
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<configuration>
<!-- The destination file for the code coverage report has to be set
to the same value in the parent pom and in each module pom. Then JaCoCo will
add up information in the same report, so that, it will give the cross-module
code coverage. -->
<destFile>${project.basedir}/../target/jacoco-itests.exec</destFile>
<includes>
<include>our.packages.*</include>
</includes>
</configuration>
<executions>
<execution>
<id>post-test</id>
<configuration>
<skip>true</skip>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.codehaus.cargo</groupId>
<artifactId>cargo-maven2-plugin</artifactId>
<version>1.2.2</version>
<configuration>
<skip>${cargo.skip}</skip>
<container>
<containerId>jetty7x</containerId>
<artifactInstaller>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-distribution</artifactId>
<version>7.6.12.v20130726</version>
<type>zip</type>
</artifactInstaller>
</container>
<configuration>
<type>standalone</type>
<properties>
<cargo.servlet.port>${jetty.port}</cargo.servlet.port>
<cargo.jvmargs>${argLine}</cargo.jvmargs>
</properties>
<deployables>
<deployable>
<artifactId>pam_filetask_manager_service</artifactId>
<groupId>${project.groupId}</groupId>
<type>war</type>
<pingURL>http://server:22000/ping</pingURL>
<properties>
</properties>
</deployable>
</deployables>
</configuration>
</configuration>
<executions>
<execution>
<id>start-server</id>
<phase>pre-integration-test</phase>
<goals>
<goal>install</goal>
<goal>start</goal>
</goals>
</execution>
<execution>
<id>stop-server</id>
<phase>post-integration-test</phase>
<goals>
<goal>stop</goal>
</goals>
</execution>
</executions>
</plugin>