jacoco-config.gradle

/**
 * Apply it in the module build.script.
 */

apply plugin: 'jacoco'

project.afterEvaluate {
    def flavors = android.productFlavors.collect { flavor -> flavor.name }

    // If there are no flavors defined, add empty flavor.
    if (!flavors) flavors.add('')

    def buildType = "Debug"
    flavors.each { productFlavorName ->
        def taskNameWithFlavor, pathNameWithFlavor
        if (!productFlavorName) {
            //empty flavors
            taskNameWithFlavor = pathNameWithFlavor = "${buildType}"
        } else {
            taskNameWithFlavor = "${productFlavorName}${buildType}"
            pathNameWithFlavor = "${productFlavorName}/${buildType}"
        }
        def unitTestsTaskName = "test${taskNameWithFlavor.capitalize()}UnitTest"
        def uiTestsTaskName = "connected${taskNameWithFlavor.capitalize()}AndroidTest"

        // Create coverage task ex: 'jacocoTestReport<Flavor>' depending on
        // 'testFlavorDebugUnitTest - unit tests' & connectedFlavorDebugAndroidTest - integration tests.
        task "jacocoTestReport${productFlavorName.capitalize()}"(type: JacocoReport, dependsOn: [unitTestsTaskName, uiTestsTaskName]) {
            group = "Reporting"
            description = "Generate Jacoco coverage reports on the ${taskNameWithFlavor.capitalize()} build."

            classDirectories = fileTree(
                    dir: "${project.buildDir}/intermediates/classes/${pathNameWithFlavor}",
                    excludes: ['**/R.class',
                               '**/R$*.class',
                               '**/BuildConfig.class',
                               '**/Manifest.class',
                               '**/Manifest$*.class',
                               '**/*$InjectAdapter.class',
                               '**/*$ModuleAdapter.class',
                               '**/*$ViewInjector*.class',
                               '**/*_MembersInjector.class',
                               '**/Dagger*Component.class',
                               '**/Dagger*Component$Builder.class',
                               '**/*Module_*Factory.class',
                               '**/*$ViewInjector*.*',
                               '**/*$ViewBinder*.*'
                    ])

            def coverageSourceDirs = [
                    "src/main/java",
                    "src/$productFlavorName/java",
                    "src/$buildType/java"
            ]
            additionalSourceDirs = files(coverageSourceDirs)
            sourceDirectories = files(coverageSourceDirs)
            executionData = fileTree(dir: project.projectDir, includes: ["**/*.exec", "**/*.ec"])

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