JaCoCo check goal for integration tests

Question

My belief is that JaCoCo Maven plugins check goal does not support integration tests in a multi module project (where the integration tests are in a different module to the code under test).

I have a project with the following structure:

service
├── webapp
├── lib1
├── lib2
└── integration-test

webapp depends on lib1 and lib2 and builds to a WAR, integration-test uses an in memory container to run webapp and execute tests against it.

My configuration is such that JaCoCo is successfully generating consolidated data files (jacoco.exec and jacoco-it.exec in service/target/) for unit tests in {webapp, lib1, lib2} AND integration test coverage for the tests run in integration-test.

When adding in the configuration for check I get this output from the plugin.

[INFO] --- jacoco-maven-plugin:0.7.8:check (default-check) @ integration-test ---
[INFO] Skipping JaCoCo execution due to missing classes directory:/home/mark/workspace/service/integration-test/target/classes

The error is accurate, as the integration-test module has only test source, so there is no target/classes directory. Adding a source directory didn't help, check failed indicating 0% coverage because there was no applicable class files in the target/classes directory. From this (and looking at the check Mojo source) it seems the check goal requires the classes directories of all the modules that it is instrumenting (webapp, lib1, lib2).

No such configuration exists in check that allows me to specify where the classes directories nor does it looks like it supports such a feature looking at the source.

Root / parent pom.xml

<properties>
    <sonar.jacoco.itReportPath>${project.basedir}/../target/jacoco-it.exec</sonar.jacoco.itReportPath>
    <sonar.jacoco.reportPath>${project.basedir}/../target/jacoco.exec</sonar.jacoco.reportPath>
</properties>

<-- Note, I am using build/plugins/plugin - not build/pluginManagement/plugin

<plugin>
    <groupId>org.jacoco</groupId>
    <artifactId>jacoco-maven-plugin</artifactId>
    <version>0.7.8</version>

    <executions>
        <execution>
            <id>agent-for-ut</id>
            <goals>
                <goal>prepare-agent</goal>
            </goals>
            <configuration>
                <append>true</append>
                <destFile>${sonar.jacoco.reportPath}</destFile>
            </configuration>
        </execution>
        <execution>
            <id>agent-for-it</id>
            <goals>
                <goal>prepare-agent-integration</goal>
            </goals>
            <configuration>
                <append>true</append>
                <destFile>${sonar.jacoco.itReportPath}</destFile>
            </configuration>
        </execution>
        <execution>
            <id>default-check</id>
            <goals>
                <goal>check</goal>
            </goals>
            <phase>verify</phase>
            <configuration>
                <dataFile>${sonar.jacoco.itReportPath}</dataFile>
                <rules>
                    <rule>
                        <element>BUNDLE</element>
                        <limits>
                            <limit>
                                <counter>LINE</counter>
                                <value>COVEREDRATIO</value>
                                <minimum>0.9800</minimum>
                            </limit>
                        </limits>
                    </rule>
                </rules>
            </configuration>
        </execution>
    </executions>
</plugin>

integration-test pom.xml

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-failsafe-plugin</artifactId>
    <version>2.19.1</version>
    <executions>
        <execution>
            <goals>
                <goal>integration-test</goal>
                <goal>verify</goal>
            </goals>
            <configuration>
                <skipTests>${skipTests}</skipTests>
                <argLine>${argLine} -Duser.timezone=UTC -Xms256m -Xmx256m</argLine>
                <reuseForks>false</reuseForks>
            </configuration>
        </execution>
    </executions>
</plugin>