1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
(*
* ExtLib Testing Suite
* Copyright (C) 2004, 2007 Janne Hellsten
*
* 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 2.1 of the License, or (at your option) any later version,
* with the special exception on linking described in file LICENSE.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*)
(* NOTE The IO module test case was contributed by Robert Atkey on
ocaml-lib-devel@lists.sourceforge.net on Nov 26, 2007.
Thanks Rob! *)
let fail fmt = Printf.ksprintf failwith fmt
let test_write_read values invalid show write read =
let s = IO.output_string () in
List.iter begin fun x ->
if try write s x; true with IO.Overflow _ -> false then fail "write %s expected to fail, but didn't" (show x)
end invalid;
List.iter begin fun i ->
try write s i with exn -> fail "failed to write %s : %s" (show i) (Printexc.to_string exn)
end values;
let s = IO.close_out s in
let s = IO.input_string s in
List.iter begin fun expect ->
let i = read s in
if i <> expect then fail "failed to read %s : got %s" (show expect) (show i)
end values;
match IO.read_all s with
| "" -> ()
| s -> fail "expected empty input, got %S" s
let test_i8 () =
let values = [~-0x80;-1;0;1;0x7F] in
let invalid = [] in (* never fails - truncates *)
test_write_read values invalid string_of_int IO.write_byte IO.read_signed_byte;
()
let test_u8 () =
let values = [0;1;0xFF] in
let invalid = [] in (* never fails *)
test_write_read values invalid string_of_int IO.write_byte IO.read_byte;
()
let test_i16 () =
(* Bug was that write_i16 did not accept -0x8000 *)
let values = [~-0x8000;-1;0;1;0x7FFF] in
let invalid = [~-0x8001;0x8000] in
let test = test_write_read values invalid string_of_int in
test IO.write_i16 IO.read_i16;
test IO.BigEndian.write_i16 IO.BigEndian.read_i16;
()
let test_u16 () =
let values = [0;1;0xFFFF] in
let invalid = [~-1;0x10000] in
let test = test_write_read values invalid string_of_int in
test IO.write_ui16 IO.read_ui16;
test IO.BigEndian.write_ui16 IO.BigEndian.read_ui16;
()
let test_i31 () =
let values = [~-0x4000_0000;-1;0;1;0x3FFF_FFFF] in
let invalid = if Sys.word_size = 32 then [] else [~-0x4000_0001;0x4000_0000] in
let test = test_write_read values invalid string_of_int in
test IO.write_i31 IO.read_i31;
test IO.BigEndian.write_i31 IO.BigEndian.read_i31;
()
let test_i32 () =
let min_i32 = Int32.to_int Int32.min_int in
let max_i32 = Int32.to_int Int32.max_int in
let values = [~-0x4000_0000;-1;0;1;0x3FFF_FFFF] @ if Sys.word_size = 32 then [] else [min_i32;max_i32] in
let invalid = if Sys.word_size = 32 then [] else [min_i32-1;max_i32+1] in
let test = test_write_read values invalid string_of_int in
test IO.write_i32 IO.read_i32_as_int;
test IO.BigEndian.write_i32 IO.BigEndian.read_i32_as_int;
()
let test_real_i32 () =
let values = [Int32.min_int;-1l;0l;1l;Int32.max_int] in
let invalid = [] in
let test = test_write_read values invalid Int32.to_string in
test IO.write_real_i32 IO.read_real_i32;
test IO.BigEndian.write_real_i32 IO.BigEndian.read_real_i32;
()
let test_bits () =
let input = Bytes.make 4 (Char.chr 0xFF) in
let ch = IO.input_bits (IO.input_bytes input) in
let value = IO.read_bits ch 31 in
assert (value = (0b111_1111_1111_1111_1111_1111_1111_1111));
()
let register () =
Util.register1 "IO" "i32" test_i32;
Util.register1 "IO" "real_i32" test_real_i32;
Util.register1 "IO" "i31" test_i31;
Util.register1 "IO" "u16" test_u16;
Util.register1 "IO" "i16" test_i16;
Util.register1 "IO" "u8" test_u8;
Util.register1 "IO" "i8" test_i8;
Util.register1 "IO" "bits" test_bits;
()
|
