Code Coverage not reported for instrumented tests (Android library module) on AGP 7.0

Hi I’m trying this on my test multi-module project before trying this on the other project I’m working on. I’ve followed the steps and run ./gradlew rootCoveragePlugin but got this report:

– com.raquezha.heograpiya.splash is 0% but when I run it in Android Studio local coverage it recognize the tests:

–

here’s the file structure as you can see Android Studio recognizes the local code coverage of splash module and says its 100% lines covered

here’s my top-level build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    apply from: rootProject.file('dependencies.gradle')

    repositories {
        google()
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:7.0.0-alpha15'
        classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:1.5.0'
        classpath 'com.google.gms:google-services:4.3.5'
        classpath 'nl.neotech.plugin:android-root-coverage-plugin:1.4.0'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

plugins {
    id "nl.neotech.plugin.rootcoverage" version "1.4.0"
}

apply plugin: 'nl.neotech.plugin.rootcoverage'

jacoco {
    toolVersion = "0.8.7"
}

tasks.withType(Test) {
    useJUnitPlatform()
    testLogging {
        exceptionFormat "full"
        events "started", "skipped", "passed", "failed"
        showStandardStreams true
    }
}

subprojects {
    afterEvaluate { project ->
        if (project.hasProperty('android')) {
            android {
                compileSdk 30
                buildToolsVersion "30.0.3"

                defaultConfig {
                    minSdk 26
                    targetSdk 30
                    versionCode 1
                    versionName "1.0"

                    testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
                }

                buildTypes {
                    release {
                        minifyEnabled false
                        proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
                    }

                    debug {
                        testCoverageEnabled true
                    }
                }

                compileOptions {
                    sourceCompatibility JavaVersion.VERSION_1_8
                    targetCompatibility JavaVersion.VERSION_1_8
                }

                kotlinOptions {
                    jvmTarget = '1.8'
                }

                buildFeatures {
                    viewBinding true
                }

                sourceSets {
                    main {
                        java.srcDirs = ['src/main/kotlin']
                    }
                    androidTest {
                        java.srcDirs = ['src/androidTest/kotlin']
                    }
                    test {
                        java.srcDirs = ['src/test/kotlin']
                    }
                }
            }
        }
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

here’s the splash module build.gradle:

plugins {
    id 'com.android.library'
    id 'kotlin-android'
}

dependencies {
    implementation _libs.lottie

    implementation project(':shared')

    testImplementation project(path: ':shared', configuration: 'testDependencies')
    androidTestImplementation project(path: ':shared', configuration: 'androidTestDependencies')
}

tasks.withType(Test) {
    useJUnitPlatform()
    testLogging {
        exceptionFormat "full"
        events "started", "skipped", "passed", "failed"
        showStandardStreams true
    }
}

I’m using:

1. Android Studio Arctic Fox | 2020.3.1 Canary 15
2. Gradle JDK: AdoptOpenj9-11
3. gradle-wrapper: distributionUrl=https://services.gradle.org/distributions/gradle-7.0-bin.zip

I’m using canary because this is only a test project I want to test new stuff

[Rolf-Smit]

Update:

It seems Google finally stepped in and fixed the issue in AGP version 7.2.0: https://issuetracker.google.com/issues/195860510#comment12

Unfortunately the fix will not be released this month, they expect to release a beta version of AGP 7.2.0 that includes this fix around December 13th.

[Rolf-Smit]

Hi @raquezha took me a while to take a look at this, but I found a few things:

Looking at the report that is generated, it is missing all execution data, which is needed to calculate coverage. You can check this for your self by going to the sessions part of the report:

This can have multiple causes, but in this case this happens because the Android Gradle Plugin updated where these files are located since version 7.0. This means the Plugin needs a small update.

However I also spotted this, which will also prevent coverage (even if I update the plugin):

In the root project build.gradle file you have this line:

getExecutionData().setFrom(fileTree(buildDir).include("/jacoco/*.exec"))

This basically overrides any of the default set execution data location’s with the location you provided. Your location only looks at the buildDir of the root project, but normally execution data is generated in all the different module buildDir’s, so this will definitely not work if you ask me.

TLDR: This plugin needs an update due to changes in the Android Gradle Plugin 7.0. I’m going to take care of this. (see update this is no longer something I can fix)