Generate Jacoco report for integration tests - gradle

Question

I've created a new test suite called integrationTest using the jvm-test-suite plugin.
Now I want to generate a jacoco report just for the integration tests.
I create a new gradle task like this:
tasks.create<JacocoReport>("jacocoIntegrationTestReport") {
group = "verification"
description = "Generates code coverage report for the integrationTest task."
executionData.setFrom(fileTree(buildDir).include("/jacoco/integrationTest.exec"))
reports {
xml.required.set(true)
html.required.set(true)
}
}
But the generated HTML/XML report is empty. I have run the integration tests before executing the task and the file integrationTest.exec exists.
Thanks

Answer 1

It seems the important part of the new JaCoCo report task configuration is to wire the execution data via the integrationTest task instead of the exec-file path. The official docs (see last example here) also imply that the source set must be wired as well.
Here is the full build script (Gradle 7.6) that produces a report with command:
./gradlew :app:integrationTest :app:jacocoIntegrationTestReport
// build.gradle.kts
plugins {
application
jacoco
}
repositories {
mavenCentral()
}
testing {
suites {
val integrationTest by creating(JvmTestSuite::class) {
dependencies {
implementation(project(":app"))
}
}
}
}
tasks.register<JacocoReport>("jacocoIntegrationTestReport") {
executionData(tasks.named("integrationTest").get())
sourceSets(sourceSets["integrationTest"])
reports {
xml.required.set(true)
html.required.set(true)
}
}