1 /* $NetBSD: t_swab.c,v 1.3 2022/12/28 15:34:19 riastradh 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 {
44 size_t i;
45
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 if (n & 1)
51 a[n - 1] = b[n - 1] = (char)~1;
52 for (; n < MAXCHK; n++)
53 a[n] = b[n] = (char)~0;
54 }
55
56 static void
dump(const char * f,char * b,size_t l)57 dump(const char *f, char *b, size_t l)
58 {
59
60 printf("%s ", f);
61 while (l--)
62 printf("%.2x ", (unsigned char)*b++);
63 printf("\n");
64 }
65
66 ATF_TC(swab_basic);
ATF_TC_HEAD(swab_basic,tc)67 ATF_TC_HEAD(swab_basic, tc)
68 {
69
70 atf_tc_set_md_var(tc, "descr", "Test swab results");
71 }
72
ATF_TC_BODY(swab_basic,tc)73 ATF_TC_BODY(swab_basic, tc)
74 {
75 char a[MAXCHK], b[MAXCHK], r[MAXCHK];
76 size_t i;
77 bool failed = false;
78
79 for (i = 0; i < MAXCHK; i++) {
80 build(a, b, i);
81 (void)memset(r, ~0, MAXCHK);
82 swab(a, r, i);
83 if (i & 1) /* last byte unspecified if odd length */
84 r[i - 1] = (char )~1;
85 if (memcmp(b, r, MAXCHK) != 0) {
86 printf("pattern mismatch at %zu bytes\n", i);
87 dump("expect:", b, MAXCHK);
88 dump("result:", r, MAXCHK);
89 failed = true;
90 }
91 }
92 if (failed)
93 atf_tc_fail_nonfatal("Check stdout for details");
94 }
95
ATF_TP_ADD_TCS(tp)96 ATF_TP_ADD_TCS(tp)
97 {
98 ATF_TP_ADD_TC(tp, swab_basic);
99
100 return atf_no_error();
101 }
102