String appMsg = "success";
AppFinalStatus finalStatus =
new AppFinalStatus(FinalApplicationStatus.SUCCEEDED, appMsg, appUrl);
when(mockApp.getFinalAppStatus()).thenReturn(finalStatus);
scheduler.stop();
drainableAppCallback.drain();
verify(mockRMClient).
unregisterApplicationMaster(FinalApplicationStatus.SUCCEEDED,
appMsg, appUrl);
verify(mockRMClient).stop();