@Test
  public void testPriority() {
    // Set method name in pb style with the method name capitalized.
    checkMethod(conf, "ReplicateWALEntry", HConstants.REPLICATION_QOS, qosFunction);
    // Set method name in pb style with the method name capitalized.
    checkMethod(conf, "OpenRegion", HConstants.ADMIN_QOS, qosFunction);
    // Check multi works.
    checkMethod(conf, "Multi", HConstants.NORMAL_QOS, qosFunction,
      MultiRequest.getDefaultInstance());
  }
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