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(*
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* ExtLib Testing Suite
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* Copyright (C) 2004, 2007 Janne Hellsten
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version,
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* with the special exception on linking described in file LICENSE.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*)
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(* NOTE The IO module test case was contributed by Robert Atkey on
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ocaml-lib-devel@lists.sourceforge.net on Nov 26, 2007.
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Thanks Rob! *)
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let fail fmt = Printf.ksprintf failwith fmt
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let test_write_read values invalid show write read =
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let s = IO.output_string () in
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List.iter begin fun x ->
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if try write s x; true with IO.Overflow _ -> false then fail "write %s expected to fail, but didn't" (show x)
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end invalid;
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List.iter begin fun i ->
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try write s i with exn -> fail "failed to write %s : %s" (show i) (Printexc.to_string exn)
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end values;
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let s = IO.close_out s in
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let s = IO.input_string s in
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List.iter begin fun expect ->
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let i = read s in
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if i <> expect then fail "failed to read %s : got %s" (show expect) (show i)
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end values;
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match IO.read_all s with
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| "" -> ()
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| s -> fail "expected empty input, got %S" s
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let test_i8 () =
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let values = [~-0x80;-1;0;1;0x7F] in
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let invalid = [] in (* never fails - truncates *)
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test_write_read values invalid string_of_int IO.write_byte IO.read_signed_byte;
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()
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let test_u8 () =
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let values = [0;1;0xFF] in
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let invalid = [] in (* never fails *)
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test_write_read values invalid string_of_int IO.write_byte IO.read_byte;
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()
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let test_i16 () =
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(* Bug was that write_i16 did not accept -0x8000 *)
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let values = [~-0x8000;-1;0;1;0x7FFF] in
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let invalid = [~-0x8001;0x8000] in
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let test = test_write_read values invalid string_of_int in
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test IO.write_i16 IO.read_i16;
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test IO.BigEndian.write_i16 IO.BigEndian.read_i16;
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()
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let test_u16 () =
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let values = [0;1;0xFFFF] in
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let invalid = [~-1;0x10000] in
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let test = test_write_read values invalid string_of_int in
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test IO.write_ui16 IO.read_ui16;
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test IO.BigEndian.write_ui16 IO.BigEndian.read_ui16;
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()
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let test_i31 () =
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let values = [~-0x4000_0000;-1;0;1;0x3FFF_FFFF] in
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let invalid = if Sys.word_size = 32 then [] else [~-0x4000_0001;0x4000_0000] in
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let test = test_write_read values invalid string_of_int in
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test IO.write_i31 IO.read_i31;
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test IO.BigEndian.write_i31 IO.BigEndian.read_i31;
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()
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let test_i32 () =
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let min_i32 = Int32.to_int Int32.min_int in
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let max_i32 = Int32.to_int Int32.max_int in
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let values = [~-0x4000_0000;-1;0;1;0x3FFF_FFFF] @ if Sys.word_size = 32 then [] else [min_i32;max_i32] in
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let invalid = if Sys.word_size = 32 then [] else [min_i32-1;max_i32+1] in
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let test = test_write_read values invalid string_of_int in
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test IO.write_i32 IO.read_i32_as_int;
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test IO.BigEndian.write_i32 IO.BigEndian.read_i32_as_int;
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()
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let test_real_i32 () =
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let values = [Int32.min_int;-1l;0l;1l;Int32.max_int] in
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let invalid = [] in
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let test = test_write_read values invalid Int32.to_string in
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test IO.write_real_i32 IO.read_real_i32;
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test IO.BigEndian.write_real_i32 IO.BigEndian.read_real_i32;
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()
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let () =
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Util.register1 "IO" "i32" test_i32;
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Util.register1 "IO" "real_i32" test_real_i32;
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Util.register1 "IO" "i31" test_i31;
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Util.register1 "IO" "u16" test_u16;
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Util.register1 "IO" "i16" test_i16;
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Util.register1 "IO" "u8" test_u8;
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Util.register1 "IO" "i8" test_i8;
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()
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