tests/lib/libc/stdio/t_clearerr.c

   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
  36 static const char       path[] = "/etc/passwd";
  37
  38 ATF_TC(clearerr_basic);
  39 ATF_TC_HEAD(clearerr_basic, tc)
  40 {
  41         atf_tc_set_md_var(tc, "descr", "A basic test of clearerr(3)");
  42 }
  43
  44 ATF_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
  65 ATF_TC(clearerr_err);
  66 ATF_TC_HEAD(clearerr_err, tc)
  67 {
  68         atf_tc_set_md_var(tc, "descr", "Test that clearerr(3) does not fail");
  69 }
  70
  71 ATF_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
  86 ATF_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 }