How to run JaCoCo in other Android Studio sub modules?

Question

I have an Android Studio Project with an app module and several modules as lib (see my settings.gradle):

rootProject.name = "MyApp"

include ":app"
include ":lib1"
include ":lib2"
include ":lib3"

I run gradle createAppDebugCoverageReport which only creates a code coverage report for app level app module. Going through the app\build\reports\coverage\androidTest\app\debug folders show me only sources in app module were considered.

I tried to apply the jacoco plugin to the lib level build.gradle files - in vain. How can I run JaCoCo for the lib level modules?

Prying

Without further details about your project, it’s not clear how to solve this. Are your library modules traditional Java libraries (→ producing JARs) or Android libraries (→ producing AARs)? Where does the createAppDebugCoverageReport task come from, or how have you applied JaCoCo to the app module? – Bedsore

Answer 1

I applied the solution from https://thsaravana.github.io/blog/jacoco-single-coverage-for-multi-module/

In the first step for each module reports were generated and in the second step these reports were merged ino one report.

I was not dependant on other libraries than Jacoco.

Prying

Could you please elaborate or quote the most relevant part of that solution, in case that resource is unreachable or goes offline? – Bedsore