strerror_test.c revision 108045 
1/*-
2 * Copyright (c) 2001 Wes Peters <wes@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/tools/regression/lib/libc/string/test-strerror.c 108045 2002-12-18 16:59:08Z mike $
27 */
28
29#include <assert.h>
30#include <errno.h>
31#include <limits.h>
32#include <stdio.h>
33#include <stdlib.h>
34#include <string.h>
35
36int
37main(void)
38{
39	char buf[64];
40	char *sret;
41	int iret;
42
43	/*
44	 * strerror() failure tests.
45	 */
46	errno = 0;
47	sret = strerror(0);
48	assert(strcmp(sret, "Unknown error: 0") == 0);
49	assert(errno == EINVAL);
50
51	errno = 0;
52	sret = strerror(INT_MAX);
53	snprintf(buf, sizeof(buf), "Unknown error: %d", INT_MAX);
54	assert(strcmp(sret, buf) == 0);
55	assert(errno == EINVAL);
56
57	/*
58	 * strerror() success tests.
59	 */
60	errno = 0;
61	sret = strerror(EPERM);
62	assert(strcmp(sret, "Operation not permitted") == 0);
63	assert(errno == 0);
64
65	errno = 0;
66	sret = strerror(EPFNOSUPPORT);
67	assert(strcmp(sret, "Protocol family not supported") == 0);
68	assert(errno == 0);
69
70	errno = 0;
71	sret = strerror(ELAST);
72	assert(errno == 0);
73
74	printf("PASS strerror()\n");
75
76	/*
77	 * strerror_r() failure tests.
78	 */
79	memset(buf, '*', sizeof(buf));
80	iret = strerror_r(0, buf, sizeof(buf));
81	assert(strcmp(buf, "Unknown error: 0") == 0);
82	assert(iret == EINVAL);
83
84	memset(buf, '*', sizeof(buf));
85	/* One byte too short. */
86	iret = strerror_r(EPERM, buf, strlen("Operation not permitted"));
87	assert(strcmp(buf, "Operation not permitte") == 0);
88	assert(iret == ERANGE);
89
90	memset(buf, '*', sizeof(buf));
91	/* One byte too short. */
92	iret = strerror_r(-1, buf, strlen("Unknown error: -1"));
93	assert(strcmp(buf, "Unknown error: -") == 0);
94	assert(iret == EINVAL);
95
96	memset(buf, '*', sizeof(buf));
97	/* Two bytes too short. */
98	iret = strerror_r(-2, buf, strlen("Unknown error: -2") - 1);
99	assert(strcmp(buf, "Unknown error: ") == 0);
100	assert(iret == EINVAL);
101
102	memset(buf, '*', sizeof(buf));
103	/* Three bytes too short. */
104	iret = strerror_r(-2, buf, strlen("Unknown error: -2") - 2);
105	assert(strcmp(buf, "Unknown error:") == 0);
106	assert(iret == EINVAL);
107
108	memset(buf, '*', sizeof(buf));
109	/* One byte too short. */
110	iret = strerror_r(12345, buf, strlen("Unknown error: 12345"));
111	assert(strcmp(buf, "Unknown error: 1234") == 0);
112	assert(iret == EINVAL);
113
114	/*
115	 * strerror_r() success tests.
116	 */
117	memset(buf, '*', sizeof(buf));
118	iret = strerror_r(EDEADLK, buf, sizeof(buf));
119	assert(strcmp(buf, "Resource deadlock avoided") == 0);
120	assert(iret == 0);
121
122	memset(buf, '*', sizeof(buf));
123	iret = strerror_r(EPROCLIM, buf, sizeof(buf));
124	assert(strcmp(buf, "Too many processes") == 0);
125	assert(iret == 0);
126
127	printf("PASS strerror_r()\n");
128
129	exit(0);
130}
131