Introduction

JaCoCo gradle plugin is used to generate code coverage reports for Android project, it creates JaCoCoReport task for the variants which buildType.testCoverageEnabled is true.

Getting Started

1. Config JaCoCo gradle plugin in build.gradle of root project.

   buildscript {
       repositories {
           ...
           jcenter()
       }
       dependencies {
           ...
           classpath 'com.sdklite.jacoco:gradle:0.1.0'
       }
   }

2. Apply JaCoCo gradle plugin in build.gradle of android project

   apply plugin: 'com.sdklite.jacoco'
   
   android {
       ...
       buildTypes {
           debug {
               ...
               testCoverageEnabled true
           }
           ...
       }
   }
   
   jacocoUnitTestReport {
       csv.enabled false
       xml.enabled false
       html.enabled true
   }

   The plugin excludes Android generated classes from report by default. You can specify custom exclusion patterns by jacocoUnitTestReport:

   jacocoUnitTestReport {
       ...
       excludes += [
           '**/AutoValue_*.*',
           ...
       ]
   }

3. Generate coverage report

   $ ./gradlew jacocoTestReport

Example

• https://github.com/sdklite/jacoco/blob/master/example