Merge and report-aggreate are not working on version 0.7.7

[Vara Prasad]

Hi ,

I have been fighting with this problem for a while now, please help resolve this.

I have multi module project and I have set of cucumber tests written for all modules in one test module. I am trying to get the coverage from the test module as well as from the source module.

I have tried merge and report-aggregate for this pupose, none of the worked for me,

Here is the my setup looks like

Parent module:

<plugin>
    <groupId>org.jacoco</groupId>
    <artifactId>jacoco-maven-plugin</artifactId>
    <version>0.7.7.201606060606</version>
    <configuration>
        <dataFile>${project.build.directory}/jacoco.exec</dataFile>
    </configuration>
    <executions>
        <execution>
            <id>prepare-agent</id>
            <goals>
                <goal>prepare-agent</goal>
            </goals>
            <configuration>
                <propertyName>argLine1</propertyName>
            </configuration>
        </execution>
        <execution>
            <id>merge</id>
            <goals>
                <goal>merge</goal>
            </goals>
            <configuration>
                <fileSets>
                    <fileSet implementation="org.apache.maven.shared.model.fileset.FileSet">
                        <directory>${project.build.directory}</directory>
                        <includes>
                            <include>*.exec</include>
                        </includes>
                    </fileSet>
                </fileSets>
            </configuration>
        </execution>
    </executions>
</plugin>

Child source modules does not have the plugin at all.

Child test module 

<plugin>
    <groupId>org.jacoco</groupId>
    <artifactId>jacoco-maven-plugin</artifactId>
    <version>0.7.7.201606060606</version>
    <executions>
        <execution>
            <id>report-aggregate</id>
            <phase>post-integration-test</phase>
            <goals>
                <goal>report-aggregate</goal>
            </goals>
        </execution>
    </executions>
</plugin>


And I ran the commands 

mvn jacoco:prepare-agent install
and 
jacoco:merge

The result is 

Skipping JaCoCo merge execution due to missing execution data files

and

jacoco:report-aggreagte

The result is empty report

[Evgeny Mandrikov]

Hi,

Please provide complete , minimal and verifiable example of project that demonstrates your difficulties, because partial excerpt of a pom.xml is clearly not enough to reproduce and understand your issue.

Also have a look on existing complete examples that demonstrate how to generate coverage report when tests are located in separate module, e.g. http://stackoverflow.com/a/41901853/244993

Thank you for your understanding.