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Tests for module 'snprintf'.
author Bruno Haible <bruno@clisp.org>
date Sun, 04 Mar 2007 18:03:19 +0000
parents
children 1f57552cdb11
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8326:f5958c21416d 8327:ce1d4fb435ff
1 /* Test of snprintf() function.
2 Copyright (C) 2007 Free Software Foundation, Inc.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
7 any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
17
18 /* Written by Bruno Haible <bruno@clisp.org>, 2007. */
19
20 #ifdef HAVE_CONFIG_H
21 # include <config.h>
22 #endif
23
24 #include <stdio.h>
25
26 #include <stdlib.h>
27 #include <string.h>
28
29 #define ASSERT(expr) if (!(expr)) abort ();
30
31 int
32 main (int argc, char *argv[])
33 {
34 char buf[8];
35 int size;
36 int retval;
37
38 for (size = 0; size <= 8; size++)
39 {
40 memcpy (buf, "DEADBEEF", 8);
41 retval = snprintf (buf, size, "%d", 12345);
42 if (size < 6)
43 {
44 ASSERT (retval < 0 || retval >= size);
45 if (size > 0)
46 {
47 ASSERT (memcmp (buf, "12345", size - 1) == 0);
48 ASSERT (buf[size - 1] == '\0' || buf[size - 1] == '0' + size);
49 }
50 ASSERT (memcmp (buf + size, "DEADBEEF" + size, 8 - size) == 0);
51 }
52 else
53 {
54 ASSERT (retval == 5);
55 ASSERT (memcmp (buf, "12345\0EF", 8) == 0);
56 }
57 }
58
59 return 0;
60 }