java.lang.IllegalStateException: System services not available to Activities before onCreate()

[Binapani Beria]

I have a inner class which extends AsyncTask. In the inner class, I have a method to check whether a particular service is running or not. I want to unit test this function "isMobiControlRunning()". I am not able to do it as I do not know how to shadow the inner class and it's method. 

Regards,

Binapani

Code:

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protected boolean isMobiControlRunning() {
    String collectNamesOfAllRunningServicesRelatedToMobiControl = "";
    ActivityManager activityManager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
    for (ActivityManager.RunningServiceInfo runningService : activityManager.getRunningServices(Integer.MAX_VALUE)) {
        String runningServiceName = runningService.service.getClassName();
        if (runningServiceName.contains("mobicontrol")) {
            collectNamesOfAllRunningServicesRelatedToMobiControl = collectNamesOfAllRunningServicesRelatedToMobiControl+runningServiceName;
        }
    }
    if(collectNamesOfAllRunningServicesRelatedToMobiControl == "")
        return false;
    return true;
}

Error: 

__________________________________________________________________________

java.lang.IllegalStateException: System services not available to Activities before onCreate()

at android.app.Activity.getSystemService(Activity.java:5915)

at com.tesco.monitoringapplication.StartApplication$MonitorMobiControl.isMobiControlRunning(StartApplication.java:135)

at com.tesco.monitoringapplication.StartApplicationUnitTest.checkOutputOfFunctionIsMobiControlRunningWhenItIsNotRunning(StartApplicationUnitTest.java:126)

at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)

at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)

at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)

at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)

at org.robolectric.RobolectricTestRunner$HelperTestRunner$1.evaluate(RobolectricTestRunner.java:570)

at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)

at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)

at org.robolectric.internal.SandboxTestRunner$2.evaluate(SandboxTestRunner.java:253)

at org.robolectric.internal.SandboxTestRunner.runChild(SandboxTestRunner.java:130)

at org.robolectric.internal.SandboxTestRunner.runChild(SandboxTestRunner.java:42)

at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)

at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)

at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)

at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)

at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)

at org.robolectric.internal.SandboxTestRunner$1.evaluate(SandboxTestRunner.java:84)

at org.junit.runners.ParentRunner.run(ParentRunner.java:363)

at org.junit.runner.JUnitCore.run(JUnitCore.java:137)

at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)

at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)

at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)

at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

at com.intellij.rt.execution.application.AppMainV2.main(AppMainV2.java:131)