t_clearerr.c revision 302408 
1/* $NetBSD: t_clearerr.c,v 1.1 2011/05/01 16:36:37 jruoho Exp $ */
2
3/*
4 * Copyright (c) 2009, Stathis Kamperis
5 * All rights reserved.
6
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
19 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
20 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
22 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
24 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
26 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29#include <sys/cdefs.h>
30__RCSID("$NetBSD: t_clearerr.c,v 1.1 2011/05/01 16:36:37 jruoho Exp $");
31
32#include <atf-c.h>
33#include <errno.h>
34#include <stdio.h>
35
36static const char	path[] = "/etc/passwd";
37
38ATF_TC(clearerr_basic);
39ATF_TC_HEAD(clearerr_basic, tc)
40{
41	atf_tc_set_md_var(tc, "descr", "A basic test of clearerr(3)");
42}
43
44ATF_TC_BODY(clearerr_basic, tc)
45{
46	char buf[2048];
47	FILE *fp;
48
49	fp = fopen(path, "r");
50	ATF_REQUIRE(fp != NULL);
51
52	while (feof(fp) == 0)
53		(void)fread(buf, sizeof(buf), 1, fp);
54
55	ATF_REQUIRE(feof(fp) != 0);
56
57	errno = 0;
58	clearerr(fp);
59
60	ATF_REQUIRE(errno == 0);
61	ATF_REQUIRE(feof(fp) == 0);
62	ATF_REQUIRE(fclose(fp) != EOF);
63}
64
65ATF_TC(clearerr_err);
66ATF_TC_HEAD(clearerr_err, tc)
67{
68	atf_tc_set_md_var(tc, "descr", "Test that clearerr(3) does not fail");
69}
70
71ATF_TC_BODY(clearerr_err, tc)
72{
73	FILE *fp;
74
75	fp = fopen(path, "r");
76
77	ATF_REQUIRE(fp != NULL);
78	ATF_REQUIRE(fclose(fp) == 0);
79
80	errno = 0;
81	clearerr(fp);
82
83	ATF_REQUIRE(errno == 0);
84}
85
86ATF_TP_ADD_TCS(tp)
87{
88
89	ATF_TP_ADD_TC(tp, clearerr_basic);
90	ATF_TP_ADD_TC(tp, clearerr_err);
91
92	return atf_no_error();
93}
94