jacoco.gradle

apply plugin: 'jacoco'

jacoco {
    toolVersion = "$jacoco_version"
}

tasks.withType(Test) {
    jacoco.includeNoLocationClasses = true
}

task jacocoTestReport(type: JacocoReport, dependsOn: ['testDebugUnitTest', 'createDebugCoverageReport']) {

    group "Reporting"
    description "Generate Jacoco coverage reports."

    reports {
        xml.enabled = true
        html.enabled = true
        html.destination file("${rootProject.buildDir}/coverage-report")
    }

    def javaClasses = []
    def kotlinClasses = []
    def javaSrc = []
    def kotlinSrc = []
    def execution = []

    def fileFilter = ['**/R.class', '**/R$*.class', '**/BuildConfig.*', '**/Manifest*.*', '**/*Test*.*', 'android/**/*.*']

    rootProject.subprojects.each { proj ->
        javaClasses   << fileTree(dir: "$proj.buildDir/intermediates/javac/debug", excludes: fileFilter)
        kotlinClasses << fileTree(dir: "$proj.buildDir/tmp/kotlin-classes/debug", excludes: fileFilter)
        javaSrc       << "$proj.projectDir/src/main/java"
        kotlinSrc     << "$proj.projectDir/src/main/kotlin"
        execution     << fileTree(dir: proj.buildDir,
                includes: ['jacoco/testDebugUnitTest.exec',
                           'outputs/code_coverage/debugAndroidTest/connected/**/*.ec'])
    }

    getSourceDirectories().setFrom(javaSrc, kotlinSrc)
    getClassDirectories().setFrom(javaClasses, kotlinClasses)

    getExecutionData().setFrom(execution)

    doLast() {
        print execution
        print "file://${reports.html.destination}/index.html"
    }
}