Fix eunit test failures related to min file position

include/machi.hrl

@@ -21,7 +21,7 @@
 %% @doc Now 4GiBytes, could be up to 64bit due to PB message limit of
 %% chunk size
 -define(DEFAULT_MAX_FILE_SIZE, ((1 bsl 32) - 1)).
--define(MINIMUM_OFFSET, 0).
+-define(MINIMUM_OFFSET, 1024).
 
 %% 0th draft of checksum typing with 1st byte.
 -define(CSUM_TAG_NONE, 0).                   % No csum provided by client

src/machi_file_proxy.erl

@@ -239,7 +239,7 @@ init({FluName, Filename, DataDir}) ->
         data_filehandle = FHd,
         csum_table      = CsumTable,
         tref            = Tref,
-        eof_position    = Eof,
+        eof_position    = erlang:max(Eof, ?MINIMUM_OFFSET),
         max_file_size   = machi_config:max_file_size()},
     lager:debug("Starting file proxy ~p for filename ~p, state = ~p, Eof = ~p",
                 [self(), Filename, St, Eof]),