@Before
  public void setUp() {
    conf = HBaseConfiguration.create();
    rpcServices = Mockito.mock(RSRpcServices.class);
    when(rpcServices.getConfiguration()).thenReturn(conf);
    qosFunction = new RSAnnotationReadingPriorityFunction(rpcServices);
  }
Basic test that qos function is sort of working; i.e. a change in method naming style over in pb
doesn't break it.
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestRSQosFunction.java