public static int putsWhichReturnsDeltaSent() throws Exception {
    csDelta = new CSDeltaTestImpl();
    region.put(DELTA_KEY, csDelta);
    for (int i = 0; i < NO_PUT_OPERATION; i++) {
      csDelta.setIntVar(i);
      region.put(DELTA_KEY, csDelta);
    }
    region.put(LAST_KEY, "");

    return csDelta.deltaSent;
  }
This test ensures that a server sends delta bytes to a client even if that client is not
interested in that event but is getting the event only because the event satisfies a CQ which
the client has registered with the server.
geode-cq/src/distributedTest/java/org/apache/geode/internal/cache/tier/sockets/ClientToServerDeltaDUnitTest.java