Jacoco offline instrumentation Gradle script

问题

I tried looking for Jacoco offline instrumentation gradle script snippets but couldn't find one. Is it possible to do Jacoco offline instrumentation through gradle scripts ? If yes...An example of it would be greats. Thanks.

回答1:

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')
    }
  }
}

回答2:

classesDir is not available in Gradle 5 this offline instrumentation code worked for me on Gradle 5.1.1

 task instrument(dependsOn: [classes, project.configurations.jacocoAnt]) {

 inputs.files classes.outputs.files
 File outputDir = new File(project.buildDir, 'instrumentedClasses')
 outputs.dir outputDir
 doFirst {
     project.delete(outputDir)
     ant.taskdef(
             resource: 'org/jacoco/ant/antlib.xml',
             classpath: project.configurations.jacocoAnt.asPath,
             uri: 'jacoco'
     )
     def instrumented = false
     if (file(sourceSets.main.java.outputDir).exists()) {
         def instrumentedClassedDir = "${outputDir}/${sourceSets.main.java}"
         ant.'jacoco:instrument'(destdir: instrumentedClassedDir) {
             fileset(dir: sourceSets.main.java.outputDir, includes: '**/*.class')
         }
         //Replace the classes dir in the test classpath with the instrumented one
         sourceSets.test.runtimeClasspath -= files(sourceSets.main.java.outputDir)
         sourceSets.test.runtimeClasspath += files(instrumentedClassedDir)
         instrumented = true
     }
     if (instrumented) {
         test.jvmArgs += '-noverify'
     }
 }
}


test.dependsOn instrument

The above code is taken from the link https://github.com/esdk/g30l0/commit/82af4c9aad50aadc40d940471fe1b934473170c7 pease follow for more information.

回答3:

The gradle jacoco plugin doesn't support offline instrumentation, it always does online instrumentation via the java agent.

If the ant jacoco plugin supports offline instrumentation that's likely the best way to get offline instrumentation working in gradle

来源：https://stackoverflow.com/questions/41370815/jacoco-offline-instrumentation-gradle-script

标签

java

gradle

build.gradle

jacoco