anchor.diff:  bad_checksum_test() ->
       Host = "localhost",
       TcpPort = 32960,
  -    DataDir = "./data",
  +    DataDir = "./data.bct",
   
       Opts = [{initial_wedged, false}],
       start_flu_package(projection_test_flu, TcpPort, DataDir, Opts),
  
positive.code:         {error, not_written} = ?FLU_C:read_chunk(Host, TcpPort,
                                                    ?DUMMY_PV1_EPOCH,
                                                    File1, Off1*983829323, Len1),
          {error, partial_read} = ?FLU_C:read_chunk(Host, TcpPort,
                                                    ?DUMMY_PV1_EPOCH,
                                                    File1, Off1, Len1*9999),
  
          {ok, {Off1b,Len1b,File1b}} = ?FLU_C:append_chunk(Host, TcpPort,
                                                           ?DUMMY_PV1_EPOCH,
  
negative.code:     _ = file:del_dir(DataDir),
      ok.
  
  start_flu_package(RegName, TcpPort, DataDir) ->
      start_flu_package(RegName, TcpPort, DataDir, []).
  
  