A minimalistic Gradle configuration for JaCoCo with JUnit 5.

junit5-jacoco-build.gradle

apply plugin: 'jacoco'

jacoco {
    toolVersion = '0.7.9'
    applyTo junitPlatformTest
}

jacocoTestReport {
    afterEvaluate {
        classDirectories = files(classDirectories.files.collect {
            fileTree(dir: it, exclude: ['**/Main*'])
        })
    }
}

junitPlatformTest {
    jacoco {
        destinationFile = file("${buildDir}/jacoco/test.exec")
    }
}

Lines 8 thru 14 are not required, when using the latest JUnit5