Take merged jacoco report into consideration for multimodule project

[Bojan_Vukasovic]

I have multi module maven project with 3 modules A,B and C.

When I generate jacoco coverage, I create one merged “jacoco.exec” file containing coverage for all the projects.

Project A uses projects B and C. It has all the tests. Project B and C have no tests. Since project A uses classes from B and C, merged “jacoco.exec” when loaded in intellij shows all classes to have 100% coverage.

The problem is with sonarqube - it seems that it requires to get one “jacoco.exec” report per project. So it shows coverage of 0% for B and C. Only project A has coverage of 100%.

Is it possible somehow to fix this, and use project A as source of coverage data for projects B and C?

[Colin]

What version of SonarQube are you using?

[Bojan_Vukasovic]

• Enterprise Edition
• Version 9.4 (build 54424)

[Colin]

I would suggest checking the Multi-module builds section of this Guide:

[Coverage & Test Data] Importing JaCoCo coverage report in XML format

Importing JaCoCo coverage report in XML format Version 5.12 of our SonarJava analyzer deprecated uses JaCoCo’s binary format (.exec files) to import coverage. This binary format is internal to the JaCoCo project, and as such there are no guarantees for backward compatibility, so it should not be used for integration purposes. As a replacement, when you scan a project with Sonar scanner, we use a special Jacoco report analyzer, which imports your JaCoCo’s XML coverage report, and this is the pr…

Keep in mind that SonarQube no longer pays attention to the .exec files – it is only capable of importing JaCoCo XML Reports.

[Bojan_Vukasovic]

I think I tried this also. It aggregates the report, but does not use it for coverage report stat inside separate projects.

[Bojan_Vukasovic]

I didn’t try to copy aggregated report to every single project though. But that seems like not proper thing to do.

[Colin]

Scrolling down a bit…

@saberduck

However, the JaCoCo plugin imports coverage reports module by module, so we need to import the same report multiple times (once for every module) to have coverage for all modules. To achieve this we set the property sonar.coverage.jacoco.xmlReportPaths in every module

<properties>
  <sonar.coverage.jacoco.xmlReportPaths>${project.basedir}/../path_to_module_with_report/target/site/jacoco-aggregate/jacoco.xml</sonar.coverage.jacoco.xmlReportPaths>
</properties>

Did you do this as well?