How to exclude Fragment from Jacoco code coverage

Question

I have used below code to exclude fragment but I unable to exlcude fragment from jacoco code coverage kindly help me on this.

task jacocoTestReport(type: JacocoReport) {

def coverageSourceDirs = [
        'src/main/java'
]

group = "Reporting"
description = "Generates Jacoco coverage reports"
reports {
    xml {
        enabled = true
        destination "${buildDir}/reports/jacoco/jacoco.xml"
    }
    csv.enabled false
    html {
        enabled true
        destination "${buildDir}/jacocoHtml"
    }
}

classDirectories = fileTree(
        dir: 'build/intermediates/classes/debug',
        excludes: ['**/R.class',
                   '**/R$*.class',
                   '**/BuildConfig.*',
                   '**/Manifest*.*',
                   '**/*Fragment*.*'
        ]
)

sourceDirectories = files(coverageSourceDirs)
additionalSourceDirs = files(coverageSourceDirs)
executionData = files('build/outputs/code - coverage/connected/flavors/smartcompanion/coverage.ec')
}

We used command below :-

gradlew connectedCheck
gradlew connectedAndroidTest
gradlew connectedDubugAndroidTest

Everytime in coverage report we able to see fragment.

Answer 1

There is another way to exclude files, you can filter them out:

classDirectories = fileTree(
    dir: 'build/intermediates/classes/debug',
    excludes: ['**/R.class',
               '**/R$*.class',
               '**/BuildConfig.*',
               '**/Manifest*.*',
               '**/*Fragment*.*'
    ]
).filter ({file -> !file.name.contains('Fragment')})

For some reason I was also unable to exclude fragments. I couldn't find out what went wrong. Filtering them out by name worked though. So it kinda feels like a workaround, but at least I could move on and get my work done.

I also noticed that on Android, the different versions of Gradle and the jacoco plugin are not always very compatible. So it might help to experiment with downgrading (or upgrading) too.