I have been working on an android project in kotlin where I have a few packages: app, package1, package2, package3 each package has its own build.gradle like build.gradle for app, package1, package2, package3 in the respective package. There is also a top-level build.gradle. Now each package has a src and a tests folder. Now I have created a jacoco.gradle file in the package.root. and applied apply from: "$project.rootDir/jacoco.gradle" in each package's build.gradle. Here is my jacoco.gradle file for reference.
apply plugin: 'jacoco'
jacoco {
toolVersion = "0.8.6"
}
tasks.withType(Test) {
jacoco.includeNoLocationClasses = true
jacoco.excludes = ['jdk.internal.*']
}
project.afterEvaluate {
(android.hasProperty('applicationVariants')
? android.'applicationVariants'
: android.'libraryVariants').all { variant ->
def variantName = variant.name
def unitTestTask = "test${variantName.capitalize()}UnitTest"
def uiTestCoverageTask = "create${variantName.capitalize()}CoverageReport"
tasks.create(name: "${unitTestTask}Coverage", type: JacocoReport, dependsOn: [
"$unitTestTask",
"$uiTestCoverageTask"
]) {
group = "Reporting"
description = "Generate Jacoco coverage reports for the ${variantName.capitalize()} build"
reports {
html.enabled = true
xml.enabled = false
csv.enabled = false
}
def fileFilter = [
// data binding
'android/databinding/**/*.class',
'**/android/databinding/*Binding.class',
'**/android/databinding/*',
'**/androidx/databinding/*',
'**/BR.*',
// android
'**/R.class',
'**/R$*.class',
'**/BuildConfig.*',
'**/Manifest*.*',
'**/*Test*.*',
'android/**/*.*',
// kotlin
'**/*MapperImpl*.*',
'**/*$ViewInjector*.*',
'**/*$ViewBinder*.*',
'**/BuildConfig.*',
'**/*Component*.*',
'**/*BR*.*',
'**/Manifest*.*',
'**/*$Lambda$*.*',
'**/*Companion*.*',
'**/*Module*.*',
'**/*Dagger*.*',
'**/*MembersInjector*.*',
'**/*_MembersInjector.class',
'**/*_Factory*.*',
'**/*_Provide*Factory*.*',
'**/*Extensions*.*',
// sealed and data classes
'**/*$Result.*',
'**/*$Result$*.*'
]
classDirectories.setFrom(files([
fileTree(dir: "${buildDir}/tmp/kotlin-classes/${variantName}", excludes: fileFilter)
]))
def variantSourceSets = variant.sourceSets.java.srcDirs.collect { it.path }.flatten()
sourceDirectories.setFrom(project.files(variantSourceSets))
def uiTestsData = fileTree(dir: "${buildDir}/outputs/code_coverage/${variantName}AndroidTest/connected/", includes: ["**/*.ec"])
executionData(files([
"$project.buildDir/jacoco/${unitTestTask}.exec",
uiTestsData
]))
}
}
}
Now the problem is when I run the testDebugUnitTestCoverage task even though all tests present in a package pass the results show 0% code coverage and all lines are missed. Can someone help me find a solution?
Update The coverage is reported with app package and package2(without any change in any files) but jacoco still reports 0 coverage for package1 and package3
Edit added gradle file for 1 of the failing package
apply plugin: 'com.android.library'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: 'kotlin-kapt'
apply from: "$project.rootDir/jacoco.gradle"
android {
compileSdkVersion 29
buildToolsVersion "29.0.2"
defaultConfig {
minSdkVersion 19
targetSdkVersion 29
versionCode 1
versionName "1.0"
multiDexEnabled true
javaCompileOptions {
annotationProcessorOptions {
includeCompileClasspath true
}
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = JavaVersion.VERSION_1_8
}
testOptions {
unitTests {
includeAndroidResources = true
all {
forkEvery = 1
maxParallelForks = Runtime.getRuntime().availableProcessors()
testLogging {
events "passed", "skipped", "failed"
showExceptions = true
exceptionFormat = "full"
showCauses = true
showStackTraces = true
showStandardStreams = false
}
}
}
}
buildTypes {
release {
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
debug {
testCoverageEnabled true
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation(
'androidx.appcompat:appcompat:1.0.2',
'androidx.exifinterface:exifinterface:1.0.0-rc01',
'androidx.lifecycle:lifecycle-livedata-ktx:2.2.0-alpha03',
'androidx.work:work-runtime-ktx:2.4.0',
'com.google.dagger:dagger:2.24',
'com.google.firebase:firebase-analytics-ktx:17.5.0',
'com.google.firebase:firebase-crashlytics:17.0.0',
"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
)
testImplementation(
'android.arch.core:core-testing:1.1.1',
'androidx.test.espresso:espresso-core:3.2.0',
'androidx.test.ext:junit:1.1.1',
'androidx.work:work-testing:2.4.0',
'com.google.dagger:dagger:2.24',
'com.google.truth:truth:0.43',
'junit:junit:4.12',
"org.jetbrains.kotlin:kotlin-test-junit:$kotlin_version",
'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.2.2',
'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.2.2',
'org.mockito:mockito-core:2.19.0',
'org.robolectric:robolectric:4.3',
project(":package2"),
)
kapt(
'com.google.dagger:dagger-compiler:2.24',
)
kaptTest(
'com.google.dagger:dagger-compiler:2.24',
)
api project(':package1')
implementation project(':package4')
implementation project(':package3')
}
repositories {
mavenCentral()
}
configurations {
all*.exclude module: 'protobuf-java'
}
from Jacoco shows 0% coverage even though 100% tests are passing
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