Gradle jacoco覆盖报告包含多个子模块？

Question

有谁知道如何为Java Jacoco报告配置一个gradle文件，其中包含多个gradle子模块的代码覆盖率？

我当前的方法仅显示当前子模块的代码覆盖率，而不显示兄弟子模块的代码覆盖率。

我有这个项目结构

- build.gradle (1)
- corelib/
    - build.gradle (2)
    - src/main/java/package/Core.java
- extlib/
    - build.gradle (3)
    - src/main/java/package/Ext.java
    - src/test/java/package/Integrationtest.java

当我执行gradlew :extlib:check :extlib:jacocoTestReportjunit-test“
Integrationtest.java”并执行代码生成报告时，该报告不包含Corelib类（如Core.java）的代码覆盖

结果应包括Ext.java和Core.java的代码覆盖率

我已经看过

• https://docs.gradle.org/current/userguide/jacoco_plugin.html

但没有发现任何线索

这是gradle文件的内容

// root build.gradle (1)
// Top-level build file where you can add configuration options 
// common to all sub-projects/modules.
buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.1.0'
    }
}
allprojects {
    repositories {
        jcenter()
    }
}

// build.gradle (2) subproject build file for corelib.
apply plugin: 'java'
apply plugin: 'jacoco'

dependencies {
}

jacocoTestReport {
    reports {
        xml.enabled true
        html.enabled true
    }
}

// build.gradle (3) subproject build file for extlib.
apply plugin: 'java'
apply plugin: 'jacoco'

dependencies {
    compile project(':corelib')
    testCompile 'junit:junit:4.11'

    // this does not compile
    // jacocoTestReport project(':pixymeta-core-lib')
}

jacocoTestReport {
    reports {
        xml.enabled true
        html.enabled true
    }
}

// workaround because android-studio does not make the test resources available
// see https://code.google.com/p/android/issues/detail?id=64887#c13
task copyTestResources(type: Copy) {
    from sourceSets.test.resources
    into sourceSets.test.output.classesDir
}
processTestResources.dependsOn copyTestResources

[更新2016-08-01]

感谢@Benjamin Muschko我也尝试了根gradle文件

// https://discuss.gradle.org/t/merge-jacoco-coverage-reports-for-multiproject-setups/12100/6
// https://docs.gradle.org/current/dsl/org.gradle.testing.jacoco.tasks.JacocoMerge.html
task jacocoMerge(type: JacocoMerge) {
   subprojects.each { subproject ->
      executionData subproject.tasks.withType(Test)
   }

}

但收到错误消息（使用gradle-2.14）

* What went wrong:
Some problems were found with the configuration of task ':jacocoMerge'.
> No value has been specified for property 'jacocoClasspath'.
> No value has been specified for property 'executionData'.
> No value has been specified for property 'destinationFile'.

还有gradle插件https://github.com/paveldudka/JacocoEverywhere，我在这里要求多子模块支持https://github.com/paveldudka/JacocoEverywhere/issues/16

[更新2016-08-01]我找到了一个基于https://github.com/palantir/gradle-jacoco-
coverage的可行
解决方案

见下面我自己的答案

Answer 1

最后，我找到了这个插件：https :
//github.com/palantir/gradle-jacoco-
coverage为我完成了这项工作：

根gradle.build

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        // see https://jcenter.bintray.com/com/android/tools/build/gradle/
        classpath 'com.android.tools.build:gradle:2.1.0'
        // classpath 'com.android.tools.build:gradle:2.2.0-alpha1'

        // https://github.com/palantir/gradle-jacoco-coverage
        classpath 'com.palantir:jacoco-coverage:0.4.0'      
    }
}

// https://github.com/palantir/gradle-jacoco-coverage
apply plugin: 'com.palantir.jacoco-full-report'

所有具有

apply plugin: 'jacoco'

包含在报告中。