jacoco.gradle

apply plugin: 'jacoco'

jacoco {
    toolVersion = "0.8.8"
}

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

def androidExclusion = [
        '**/databinding/**/*.*',
        '**/android/databinding/*Binding.*',
        '**/BR.*',
        '**/R.*',
        '**/R$*.*',
        '**/BuildConfig.*',
        '**/Manifest*.*',
        '**/*_MembersInjector.*',
        '**/Dagger*Component.*',
        '**/Dagger*Component$Builder.*',
        '**/*Module_*Factory.*',
        '**/*Fragment*.*',
        '**/*Activity*.*',
        '**/*Adapter*.*',
        '**/*ViewPager*.*',
        '**/*ViewHolder*.*',
        '**/*Module*.*'
]

task jacocoTestReport(type: JacocoReport, dependsOn: 'testDebugUnitTest') {
    group = "Reporting"
    description = "Generate Jacoco coverage reports after running tests."
    reports {
        xml.enabled = true
        html.enabled = true
    }

    getClassDirectories().setFrom(fileTree(
            dir: "${buildDir}/intermediates/javac/debug/classes/",
            excludes: androidExclusion
    ))

    println("debug -- buildDir: ${buildDir}")
    println("debug -- project.projectDir: ${project.projectDir}")

    getSourceDirectories().setFrom(files((project.projectDir).toString() + "/src"))
    getExecutionData().setFrom(files("$buildDir/jacoco/testDebugUnitTest.exec"))
}
//task getCoverage(type: Exec, dependsOn: 'jacocoTestReport') {
//    group = "Reporting"
//    commandLine "open", "$buildDir/reports/jacoco/codeCoverageReport/html/index.html"
//}