jacoco.gradle

apply plugin: "jacoco"

task jacocoReport(type: JacocoReport, dependsOn: ['test']) {
    group = 'Reporting'
    description = 'Generate Jacoco coverage reports after running tests.'

    reports {
        xml.enabled = true
        html.enabled = true
    }

    // "gradle dependencies" - shows configurations
    // "jacocoAgent/jacocoAnt" and "androidJacocoAgent/androidJacocoAnt"
    // The Android version is a newer version
    // Use hidden configuration, for details look into JacocoPlugin.groovy
//    jacocoClasspath = configurations['androidJacocoAnt']

    // exclude auto-generated classes and tests
//    def fileFilter = ['**/R.class', '**/R$*.class', '**/BuildConfig.*', '**/Manifest*.*', '**/*Test*.*', 'android/**/*.*']
    def debugTree = fileTree(dir: "${buildDir}/classes/main")
    def javaSrc = "${projectDir}/src/main/java"
    def groovySrc = "${projectDir}/src/main/groovy"

    sourceDirectories = files([javaSrc, groovySrc])
    classDirectories = files([debugTree])
    executionData = fileTree(dir: projectDir, includes: ['**/*.exec'])

    // Bit hacky but fixes https://code.google.com/p/android/issues/detail?id=69174.
    // We iterate through the compiled .class tree and rename $$ to $.
    doFirst {
        new File("$buildDir/classes/").eachFileRecurse { file ->
            if (file.name.contains('$$')) {
                file.renameTo(file.path.replace('$$', '$'))
            }
        }
    }
}