This problem keeps haunting me for a few times, every time the keyword android jacocoTestCoverageVerification leads me to this page and gets no answer. Finally, I succeeded make the jacoco work and I'd like to share my solution here.
The reason gradle can't find jacocoTestCoverageVerification and jacocoTestReport is because For projects that also apply the Java Plugin, the JaCoCo plugin automatically adds the following tasks jacocoTestReport and jacocoTestCoverageVerification.
It means for projects that not appling the java Plugin, it will not add jacocoTestReport and jacocoTestCoverageVerification.
So we have to add them yourself.
Follow the link: Code Coverage for Android Testing, we can add the task jacocoTestReport.
And the same way, we also can add the task jacocoTestCoverageVerification.
Full function goes like
// https://engineering.rallyhealth.com/android/code-coverage/testing/2018/06/04/android-code-coverage.html
ext.enableJacoco = { Project project, String variant ->
project.plugins.apply('jacoco')
final capVariant = variant.capitalize()
StringBuilder folderSb = new StringBuilder(variant.length() + 1)
for (int i = 0; i < variant.length(); i++) {
char c = variant.charAt(i)
if (Character.isUpperCase(c)) {
folderSb.append('/')
folderSb.append(Character.toLowerCase(c))
} else {
folderSb.append(c)
}
}
final folder = folderSb.toString()
project.android {
buildTypes {
debug {
testCoverageEnabled true
}
}
testOptions {
unitTests.all {
jacoco {
//You may encounter an issue while getting test coverage for Robolectric tests.
//To include Robolectric tests in the Jacoco report, one will need to set the includeNolocationClasses flag to true.
// This can no longer be configured using the android DSL block, thus we search all tasks of Test type and enable it
includeNoLocationClasses = true
}
}
}
jacoco {
version = '0.8.1'
}
}
project.jacoco {
toolVersion = '0.8.1'
}
project.tasks.create(
name: 'jacocoTestCoverageVerification',
type: JacocoCoverageVerification,
dependsOn: ["test${capVariant}UnitTest",
"create${capVariant}CoverageReport"
]
) {
onlyIf = {
true
}
violationRules {
rule {
limit {
minimum = 0.5
}
}
rule {
enabled = false
element = 'CLASS'
includes = ['org.gradle.*']
limit {
counter = 'LINE'
value = 'TOTALCOUNT'
maximum = 0.3
}
}
}
def coverageSourceDirs = [
"src/main/java",
"src/main/kotlin"
]
def fileFilter = [
'**/R.class',
'**/R$*.class',
'**/*$ViewInjector*.*',
'**/*$ViewBinder*.*',
'**/BuildConfig.*',
'**/*_MembersInjector.class',
'**/Dagger*Component.class',
'**/Dagger*Component$Builder.class',
'**/*Module_*Factory.class',
'**/*_MembersInjector.class',
'**/Dagger*Subcomponent*.class',
'**/*Subcomponent$Builder.class',
'**/Manifest*.*'
]
def javaClasses = fileTree(
dir: "${project.buildDir}/intermediates/javac/$folder",
excludes: fileFilter
)
def kotlinClasses = fileTree(
dir: "${project.buildDir}/tmp/kotlin-classes/$variant",
excludes: fileFilter
)
group = "Reporting"
description = "Applying Jacoco coverage verification for the ${project.name} with the " +
"$variant variant."
classDirectories = files([javaClasses], [kotlinClasses])
additionalSourceDirs = files(coverageSourceDirs)
sourceDirectories = files(coverageSourceDirs)
executionData = fileTree(dir: "${project.buildDir}", includes: [
"jacoco/testDebugUnitTest.exec",
"outputs/code_coverage/debugAndroidTest/connected/*.ec",
"outputs/code_coverage/connected/*.ec" //Check this path or update to relevant path
])
}
project.tasks.create(
name: 'jacocoTestReport',
type: JacocoReport,
dependsOn: ["test${capVariant}UnitTest",
"create${capVariant}CoverageReport"
]
) {
def coverageSourceDirs = [
"src/main/java",
"src/main/kotlin"
]
def fileFilter = [
'**/R.class',
'**/R$*.class',
'**/*$ViewInjector*.*',
'**/*$ViewBinder*.*',
'**/BuildConfig.*',
'**/*_MembersInjector.class',
'**/Dagger*Component.class',
'**/Dagger*Component$Builder.class',
'**/*Module_*Factory.class',
'**/*_MembersInjector.class',
'**/Dagger*Subcomponent*.class',
'**/*Subcomponent$Builder.class',
'**/Manifest*.*'
]
def javaClasses = fileTree(
dir: "${project.buildDir}/intermediates/javac/$folder",
excludes: fileFilter
)
def kotlinClasses = fileTree(
dir: "${project.buildDir}/tmp/kotlin-classes/$variant",
excludes: fileFilter
)
group = "Reporting"
description = "Generate Jacoco coverage reports for the ${project.name} with the " +
"$variant variant."
classDirectories = files([javaClasses], [kotlinClasses])
additionalSourceDirs = files(coverageSourceDirs)
sourceDirectories = files(coverageSourceDirs)
executionData = fileTree(dir: "${project.buildDir}", includes: [
"jacoco/testDebugUnitTest.exec",
"outputs/code_coverage/debugAndroidTest/connected/*.ec",
"outputs/code_coverage/connected/*.ec" //Check this path or update to relevant path
])
onlyIf = {
true
}
println project
println "current $project buildDir: $buildDir project buildDir: ${project.buildDir}"
System.out.flush()
reports {
html.enabled = true
html.destination file("reporting/jacocohtml")
}
}
}
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