Did anyone figure out how to configure JaCoCo in a KMM project? It started with the Compose for Desktop Template (from the Wizard), but it does not seem possible to activate JaCoCo if also the "android-library" plugin is applied. So is there no way to report code coverage to sonarqube via gradle in Multiplatform projects?

FYI, jacoco is not working with kotlin 1.5

Is that a Kotlin or a JaCoCo problem? Is Kotlin producing invalid Java bytecode here?

Jacaco fixed those issues in 0.8.7: https://www.jacoco.org/jacoco/trunk/doc/changes.html

Jacoco works fine with Kotlin 1.5 & 1.5.10 if you use the latest version: https://gitlab.com/clovis-ai/formulaide/-/blob/main/server/build.gradle.kts#L41

Yeah, but that's a JVM project. My project is Kotlin Multiplatform like this: https://github.com/JetBrains/compose-jb/blob/master/templates/multiplatform-template/common/build.gradle.kts

Jacoco is a JVM analysis tool, it's not going to work on other platforms. If you want coverage in other platforms, you'll have to find an equivalent tool there.

I want coverage for "jvmMain"

Jacoco coverage works fine for multiplatform, and will work for code under commonMain and jvmMain.

val isCoverageEnabled = run {
    val isCoverageEnabled: String by project
    isCoverageEnabled.toBoolean()
}
if (isCoverageEnabled) {
    apply(plugin = "java-library")
    apply(plugin = "jacoco")

    configure<JacocoPluginExtension> {
        val jacocoVersion: String by project
        toolVersion = jacocoVersion
    }

    afterEvaluate {
        tasks.withType<JacocoReport>().configureEach {
            classDirectories.setFrom(
                fileTree("${buildDir}/classes/kotlin/jvm/") {
                    exclude("**/*Test*.*", "**/*Fixture*.*")
                }
            )

            sourceDirectories.setFrom(
                // This could be better if it dynamically got the source directories, e.g. more along the lines of
                // kotlin.sourceSets["commonMain"].kotlin.sourceDirectories,
                // kotlin.sourceSets["jvmMain"].kotlin.sourceDirectories
                listOf("src/commonMain/kotlin", "src/jvmMain/kotlin")
            )
            executionData.setFrom("${buildDir}/jacoco/jvmTest.exec")
        }
    }
}

Thanks. Do you have Android in your KMM project? Running this I get

The 'java' plugin has been applied, but it is not compatible with the Android plugins.

My project is multiplatform compose app with common, java (compose desktop), and javascript (compose web). Android has its own configuration for coverage. I’ve only configured Android independently of the other platforms.

Ah, ok, thank you.