@Test
  public void testClientSendsFullValueToServerWhenDeltaOffAtServer() {
    initialise2(false/* clone */, new String[] {CQs[1]}, false/* CQ */, true/* RI */,
        false/* enable delta */);
    // set expected value on server
    server.invoke(() -> ClientToServerDeltaDUnitTest.setFirstSecondUpdate(putDelta[0],
        putDelta[2]));

    client.invoke(() -> ClientToServerDeltaDUnitTest.putDelta(DELTA_KEY));

    assertFalse("Delta Propagation feature used at client.",
        client.invoke(DeltaTestImpl::toDeltaFeatureUsed));
    assertFalse("Delta Propagation feature used at server.",
        server.invoke(DeltaTestImpl::fromDeltaFeatureUsed));
    assertFalse(
        "Failures at client while calculating delta. But delta-propagation is false at server.",
        client.invoke(DeltaTestImpl::isToDeltaFailure));
    assertFalse(
        "Failures at server while applying delta. But delta-propagation is false at server.",
        server.invoke(DeltaTestImpl::isFromDeltaFailure));
  }
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