Here is an example of Gradle script that performs offline instrumentation using JaCoCo Ant Task:
apply plugin: 'java'
configurations {
jacoco
jacocoRuntime
}
dependencies {
jacoco group: 'org.jacoco', name: 'org.jacoco.ant', version: '0.7.9', classifier: 'nodeps'
jacocoRuntime group: 'org.jacoco', name: 'org.jacoco.agent', version: '0.7.9', classifier: 'runtime'
testCompile 'junit:junit:4.12'
}
repositories {
mavenCentral()
}
task instrument(dependsOn: ['classes']) {
ext.outputDir = buildDir.path + '/classes-instrumented'
doLast {
ant.taskdef(name: 'instrument',
classname: 'org.jacoco.ant.InstrumentTask',
classpath: configurations.jacoco.asPath)
ant.instrument(destdir: outputDir) {
fileset(dir: sourceSets.main.output.classesDir)
}
}
}
gradle.taskGraph.whenReady { graph ->
if (graph.hasTask(instrument)) {
tasks.withType(Test) {
doFirst {
systemProperty 'jacoco-agent.destfile', buildDir.path + '/jacoco/tests.exec'
classpath = files(instrument.outputDir) + classpath + configurations.jacocoRuntime
}
}
}
}
task report(dependsOn: ['instrument', 'test']) {
doLast {
ant.taskdef(name: 'report',
classname: 'org.jacoco.ant.ReportTask',
classpath: configurations.jacoco.asPath)
ant.report() {
executiondata {
ant.file(file: buildDir.path + '/jacoco/tests.exec')
}
structure(name: 'Example') {
classfiles {
fileset(dir: sourceSets.main.output.classesDir)
}
sourcefiles {
fileset(dir: 'src/main/java')
}
}
html(destdir: buildDir.path + '/reports/jacoco')
}
}
}
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