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|
(* Js_of_ocaml tests
* http://www.ocsigen.org/js_of_ocaml/
* Copyright (C) 2019 Hugo Heuzard
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, with linking exception;
* either version 2.1 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*)
(* https://github.com/ocsigen/js_of_ocaml/issues/777 *)
let%expect_test _ =
let tmp = Filename.temp_file "b" "txt" in
let oc = open_out_bin tmp in
let () = print_int (out_channel_length oc) in
let () = output_string oc "test" in
let () = print_int (out_channel_length oc) in
let () = flush oc in
let () = print_int (out_channel_length oc) in
let () = output_string oc "test" in
let () = print_int (out_channel_length oc) in
let () = seek_out oc 0 in
let () = print_int (out_channel_length oc) in
[%expect {| 00448 |}]
let%expect_test _ =
let module M = struct
let marshal_out ch v =
Marshal.to_channel ch v [];
flush ch
let marshal_out_segment f ch v =
let start = pos_out ch in
let start' = LargeFile.pos_out ch in
seek_out ch 0;
seek_out ch start;
Format.printf "start=%d %Ld\n%!" start start';
output_binary_int ch 0;
(* dummy value for stop *)
marshal_out ch v;
let stop = pos_out ch in
let stop' = LargeFile.pos_out ch in
Format.printf "stop=%d %Ld\n%!" stop stop';
seek_out ch start;
output_binary_int ch stop;
seek_out ch stop;
Digest.output ch (Digest.file f)
let read_segment _f ch =
let start = pos_in ch in
let start' = LargeFile.pos_in ch in
seek_in ch 0;
seek_in ch start;
Format.printf "start=%d %Ld\n%!" start start';
let stop = input_binary_int ch in
let _ = input_value ch in
let stop2 = pos_in ch in
let stop2' = LargeFile.pos_in ch in
Format.printf "stop=%d %d %Ld\n%!" stop stop2 stop2';
let _ = Digest.input ch in
()
let _ =
let tmp = Filename.temp_file "out" "txt" in
let filename = tmp in
let chan = open_out_bin filename in
output_binary_int chan 8900;
marshal_out_segment filename chan [ "output"; "data" ];
marshal_out_segment filename chan [ "more"; "stuff" ];
close_out chan;
let chan = open_in_bin filename in
let _ = input_binary_int chan in
read_segment filename chan;
read_segment filename chan;
close_in chan
end in
let open! M in
[%expect
{|
start=4 4
stop=43 43
start=59 59
stop=97 97
start=4 4
stop=43 43 43
start=59 59
stop=97 97 97
|}]
|
