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t_clearerr.c revision 1.1 
      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 }
     94