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|
(* hey emacs, this is OCaml code: -*- tuareg -*- *)
(* libnbd OCaml test case
* Copyright Red Hat
*
* This library 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; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*)
open Ocaml_test_config
open Printf
let expected =
let b = Bytes.create 512 in
for i = 0 to 512/8-1 do
let i64 = Int64.of_int (i*8) in
bytes_set_int64_be b (i*8) i64
done;
b
(* This can be any error, it's just used as a sentinel. *)
let test_error = Unix.ENETDOWN
let f user_data buf2 offset s err =
assert (!err = 0);
err := NBD.errno_of_unix_error test_error;
if user_data <> 42 then invalid_arg "this should be turned into NBD.Error";
assert (buf2 = expected);
assert (offset = 0_L);
assert (s = Int32.to_int NBD.read_data);
0
let () =
let nbd = NBD.create () in
NBD.connect_command nbd
[nbdkit; "-s"; "--exit-with-parent"; "-v";
"pattern"; "size=512"];
let buf = Bytes.create 512 in
NBD.pread_structured nbd buf 0_L (f 42);
assert (buf = expected);
let flags = let open NBD.CMD_FLAG in [DF] in
NBD.pread_structured nbd buf 0_L (f 42) ~flags;
assert (buf = expected);
try
NBD.pread_structured nbd buf 0_L (f 43) ~flags;
assert false
with
| NBD.Error (_, Some errno) when errno = test_error -> ()
| NBD.Error (_, _) -> assert false
let () = Gc.compact ()
|
