1 /* $NetBSD: t_swab.c,v 1.2 2011/07/07 08:27:36 jruoho Exp $ */
2
3 /*-
4 * Copyright (c) 2001 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code was contributed to The NetBSD Foundation by Christos Zoulas.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 */
30 #include <atf-c.h>
31
32 #include <stdio.h>
33 #include <stdlib.h>
34 #include <string.h>
35 #include <unistd.h>
36
37 #include <err.h>
38
39 #define MAXCHK 100
40
41 static void
build(char * a,char * b,size_t n)42 build(char *a, char *b, size_t n) {
43 size_t i;
44
45 n >>= 1;
46 for (i = 0; i < n; i += 2) {
47 b[i+1] = a[i] = (char)i;
48 b[i] = a[i+1] = (char)(i+1);
49 }
50 for (n <<= 1; n < MAXCHK; n++)
51 a[n] = b[n] = (char)~0;
52 }
53
54 static void
dump(const char * f,char * b,size_t l)55 dump(const char *f, char *b, size_t l)
56 {
57
58 printf("%s ", f);
59 while (l--)
60 printf("%.2x ", (unsigned char)*b++);
61 printf("\n");
62 }
63
64 ATF_TC(swab_basic);
ATF_TC_HEAD(swab_basic,tc)65 ATF_TC_HEAD(swab_basic, tc)
66 {
67
68 atf_tc_set_md_var(tc, "descr", "Test swab results");
69 }
70
ATF_TC_BODY(swab_basic,tc)71 ATF_TC_BODY(swab_basic, tc)
72 {
73 char a[MAXCHK], b[MAXCHK], r[MAXCHK];
74 size_t i;
75
76 for (i = 0; i < MAXCHK; i += 2) {
77 build(a, b, i);
78 (void)memset(r, ~0, MAXCHK);
79 swab(a, r, i);
80 if (memcmp(b, r, MAXCHK) != 0) {
81 fprintf(stderr, "pattern mismatch at %lu bytes",
82 (unsigned long)i);
83 dump("expect:", b, MAXCHK);
84 dump("result:", r, MAXCHK);
85 atf_tc_fail("Check stderr for details");
86 }
87 }
88 }
89
ATF_TP_ADD_TCS(tp)90 ATF_TP_ADD_TCS(tp)
91 {
92 ATF_TP_ADD_TC(tp, swab_basic);
93
94 return atf_no_error();
95 }
96