Is there a good way to get code coverage for Kotlin with som

Question

Is there a good way to get code coverage for Kotlin with something like JaCoCo If I just add the source and build dirs wouldn t it just report false positives due to code generation for e g data classes

gildor · Answer

There are some Kotlin specific improvements in latest Jacoco versions that cover data classes and some other cases

gildor · Answer

See <https github com jacoco jacoco issues 552>

Davio · Answer

I got JaCoCo to report coverage in its report but still having trouble to pass it on to SonarQube sadly

gildor · Answer

Why Jacoco report should be standard

gildor · Answer

maybe some problems with rendering on SonarQube

gildor · Answer

because some cloud services that I used for coverage reports works properly with Kotlin code and jacoco reports

Davio · Answer

I keep getting Coverage information was not collected Perhaps you forget to include debug information into compiled classes

gildor · Answer

Not sure what you mean I got reports from unit tests coverage and it was with debug But I didn t use sonar qube

Davio · Answer

Well I can get a very nice Jacoco html report with coverage so that is working nicely

Davio · Answer

But somehow SonarQube is not understanding the jacoco test exec or something

gildor · Answer

For example this is coverage of one of my projects <https codecov io gh gildor kotlin coroutines retrofit>

gildor · Answer

gildor · Answer

so yeah probably there is some issue of SonarQube

Davio · Answer

Yeah it pointed to a stray java file package info java I had so maybe there s only an issue with that

Davio · Answer

As there is no package info kts or something like that and I wanted some javadoc on that level I just added that file

Davio · Answer

Maybe it confuses Sonar to have that file

Davio · Answer

I removed it and the warning is gone but still no coverage in my sonarqube dashboard

Davio · Answer

I m still stumped it looks like I ve set up everything correctly but the Sonar gradle plugin just doesn t trigger its JaCoCo report collector even though I applied the jacoco plugin and a test exec is generated Maybe it has to do with using the Kotlin DSL for Gradle I ve looked at sonar logging and all paths point correctly tried adding system properties such as sonar java coverage=jacoco we have the Kotlin plugin on our sonarqube server but no luck