jacoco_project.gradle

apply plugin: 'jacoco'

jacoco {
    toolVersion '0.8.7'
}

tasks.withType(Test) {
    jacoco.includeNoLocationClasses = true
    jacoco.excludes = ['jdk.internal.*']
}

project.afterEvaluate {
    def variants = ["debug", "fullDebug"]

    tasks.create(name: "jacocoAllDebugReport", type: JacocoReport) {

        group = "Reporting"
        description = "Generate overall Jacoco coverage report for the debug build."

        reports {
            html.required.set(true)
            xml.required.set(true)
        }

        def excludes = [
                '**/R.class',
                '**/R$*.class',
                '**/BuildConfig.*',
                '**/Manifest*.*',
                '**/*Test*.*',
                'android/**/*.*',
                'androidx/**/*.*',
                '**/*$ViewInjector*.*',
                '**/*Dagger*.*',
                '**/*MembersInjector*.*',
                '**/*_Factory.*',
                '**/*_Provide*Factory*.*',
                '**/*_ViewBinding*.*',
                '**/AutoValue_*.*',
                '**/R2.class',
                '**/R2$*.class',
                '**/*Directions$*',
                '**/*Directions.*',
                '**/*Binding.*'
        ]

        def jClasses = subprojects.collect { proj ->
            variants.collect { variant ->
                "${proj.buildDir}/intermediates/javac/$variant/classes"
            }
        }.flatten()
        def kClasses = subprojects.collect { proj ->
            variants.collect { variant ->
                "${proj.buildDir}/tmp/kotlin-classes/$variant"
            }
        }.flatten()

        def javaClasses = jClasses.collect { path ->
            fileTree(dir: path, excludes: excludes)
        }
        def kotlinClasses = kClasses.collect { path ->
            fileTree(dir: path, excludes: excludes)
        }

        classDirectories.from = files([javaClasses, kotlinClasses])
        def sources = subprojects.collect { proj ->
            variants.collect { variant ->
                ["${proj.projectDir}/src/main/java", "${proj.projectDir}/src/main/kotlin",
                 "${proj.projectDir}/src/$variant/java", "${proj.projectDir}/src/$variant/kotlin"]
            }.flatten()
        }.flatten()
        sourceDirectories.from = files(sources)

        def executions = subprojects.collect { proj ->
            variants.collect { variant ->
                def path = "${proj.buildDir}/jacoco/test${variant.capitalize()}UnitTest.exec"
                //printf('Collecting execution data from: %s\n', path)
                if ((new File(path)).exists()) path else null
            }
        }.flatten()
        executions.removeAll([null])

        executionData.from = files(executions)
    }
}