public static void checkDeltaInvoked(Integer deltaSent) {
    assertTrue(
        "Delta applied :" + ((CSDeltaTestImpl) region.get(DELTA_KEY)).getDeltaApplied()
            + "\n Delta sent :" + deltaSent,
        ((CSDeltaTestImpl) region.get(DELTA_KEY)).getDeltaApplied() == 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