Gradle: android plugin does not generate jacoco.exe when used testDebugCoverage = true

[tvijay]

I enabled jacoco code coverage using following code to build file

buildTypes {

debug { testCoverageEnabled true }

}

test are running and reports are generated "buildDir/ouptuts/reports/coverage/".

But I require the path to generated jacoco.exe so that i can sync the reports to SONARQUBE server.

Configurations:

Gradle version: 1.11

Android Gradle plugin:0.11.+

Emulator: Android-19

App Target SDK :19

my logcat gives me below information when i run "connectedCheck" 

java.io.FileNotFoundException: /jacoco.exec: open failed: EROFS (Read-only file system)

  at libcore.io.IoBridge.open(IoBridge.java:409)

  at java.io.FileOutputStream.<init>(FileOutputStream.java:88)

  at org.jacoco.agent.rt.internal_932a715.output.FileOutput.openFile(FileOutput.java:67)

  at org.jacoco.agent.rt.internal_932a715.output.FileOutput.startup(FileOutput.java:49)

  at org.jacoco.agent.rt.internal_932a715.Agent.startup(Agent.java:122)

  at org.jacoco.agent.rt.internal_932a715.Agent.getInstance(Agent.java:50)

  at org.jacoco.agent.rt.internal_932a715.Offline.<clinit>(Offline.java:31)

  at com.example.myandroid.SampleObject.$jacocoInit(SampleObject.java)

  at com.example.myandroid.SampleObject.<init>(SampleObject.java)

  at com.example.myandroid.tests.MyAndroidAppActivityTest.testRunIt(MyAndroidAppActivityTest.java:20)

  at java.lang.reflect.Method.invokeNative(Native Method)

  at java.lang.reflect.Method.invoke(Method.java:515)

  at junit.framework.TestCase.runTest(TestCase.java:168)

  at junit.framework.TestCase.runBare(TestCase.java:134)

  at junit.framework.TestResult$1.protect(TestResult.java:115)

  at junit.framework.TestResult.runProtected(TestResult.java:133)

  at junit.framework.TestResult.run(TestResult.java:118)

  at junit.framework.TestCase.run(TestCase.java:124)

  at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:191)

  at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:176)

  at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:554)

  at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1701)

    Caused by: libcore.io.ErrnoException: open failed: EROFS (Read-only file system)

  at libcore.io.Posix.open(Native Method)

at libcore.io.BlockGuardOs.open(BlockGuardOs.java:110)

  at libcore.io.IoBridge.open(IoBridge.java:393)

  ... 21 more

[Xavier Ducrohet]

This error is happening on the device. This is probably not where you want to do any syncing with a CI server.

The Gradle plugin manually grabs the code coverage data, and you should plug yourself there (through a custom plugin) to send that somewhere if you need to.

TBH I'm not sure we have the proper hooks for that, but if we can figure out what you need, we can add it easily.

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Please do not send me questions directly. Thanks!

[tvijay]

Thanks Xavier.

JFYI, 

My objective is to setup build-job at jenkins to build, test, generate test reports and code-coverage reports through gradle build and then sync the generated reports/data with SONARQUBE.

I am running tests on emulator (target: android-19).

-- I have setup build job at jenkins-CI server. 

-- I have also setup SONARQUBE with Android plugin. 

-- I have also enabled test coverage in build files

-- Build files is configured with all required sonar properties.

        sonarRunner {

                sonarProperties {

                    //...

                    property 'sonar.language', 'java'

                    property 'sonar.sources', 'src'

                    property 'sonar.binaries', 'build/intermediates/classes/debug/'

                    property 'sonar.junit.reportsPath', 'build/outputs/androidTest-results/connected/'

                    property 'sonar.java.codeCoveragePlugin', 'jacoco'

                    property 'sonar.jacoco.reportPath' , 'build/outputs/code-coverage/connected/'

                    property 'sonar.profile', 'Android Lint'

                }

        }

On running 'connectedCheck'

-- HTML formatted reports for both test results and code coverage get generated but to sync the reports-data with sonarQube I do require the location to generated 'jacoco.exe' (coverage data)

   which I do not see at 'build/outputs/code-coverage/connected/', though I am able to see html reports.

[Xavier Ducrohet]

We don't generate jacoco.exe

[tvijay]

'jacoco.exe' is just the name.
I am actually asking about the file containing the coverage data (or raw coverage data) that can be used to 

 -- Parse and generage HTML/XML based reports (I know gradle already does it)

But one another use of the coverage file is that it is been expected by SONAR RUNNER, so that sonar runner parses the file and push the report data to server server.

Sorry, If i am confusing you but I just want to sync those coverage reports with sonar server. Is it possible.

[narayanan swaminathan]

Hi I am facing the exact same problem.You got any solution?

I have created coverage.ec file using jacoco.I want to sync the report to sonar server.

Thanks

Narayanan