1 /*-
2 * Copyright (c) 2016 Jilles Tjoelker <[email protected]>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29
30 #include <assert.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <string.h>
34
35 #include <atf-c.h>
36
37 ATF_TC_WITHOUT_HEAD(zero);
ATF_TC_BODY(zero,tc)38 ATF_TC_BODY(zero, tc)
39 {
40
41 assert(memcmp("a", "b", 0) == 0);
42 assert(memcmp("", "", 0) == 0);
43 }
44
45 ATF_TC_WITHOUT_HEAD(eq);
ATF_TC_BODY(eq,tc)46 ATF_TC_BODY(eq, tc)
47 {
48 unsigned char data1[256], data2[256];
49 int i;
50
51 for (i = 0; i < 256; i++)
52 data1[i] = data2[i] = i ^ 0x55;
53 for (i = 1; i < 256; i++)
54 assert(memcmp(data1, data2, i) == 0);
55 for (i = 1; i < 256; i++)
56 assert(memcmp(data1 + i, data2 + i, 256 - i) == 0);
57 }
58
59 ATF_TC_WITHOUT_HEAD(neq);
ATF_TC_BODY(neq,tc)60 ATF_TC_BODY(neq, tc)
61 {
62 unsigned char data1[256], data2[256];
63 int i;
64
65 for (i = 0; i < 256; i++) {
66 data1[i] = i;
67 data2[i] = i ^ 0x55;
68 }
69 for (i = 1; i < 256; i++)
70 assert(memcmp(data1, data2, i) != 0);
71 for (i = 1; i < 256; i++)
72 assert(memcmp(data1 + i, data2 + i, 256 - i) != 0);
73 }
74
75 ATF_TC_WITHOUT_HEAD(diff);
ATF_TC_BODY(diff,tc)76 ATF_TC_BODY(diff, tc)
77 {
78 unsigned char data1[256], data2[256];
79 int i;
80
81 memset(data1, 'a', sizeof(data1));
82 memset(data2, 'a', sizeof(data2));
83 data1[128] = 255;
84 data2[128] = 0;
85 for (i = 1; i < 66; i++) {
86 assert(memcmp(data1 + 128, data2 + 128, i) == 255);
87 assert(memcmp(data2 + 128, data1 + 128, i) == -255);
88 assert(memcmp(data1 + 129 - i, data2 + 129 - i, i) == 255);
89 assert(memcmp(data2 + 129 - i, data1 + 129 - i, i) == -255);
90 assert(memcmp(data1 + 129 - i, data2 + 129 - i, i * 2) == 255);
91 assert(memcmp(data2 + 129 - i, data1 + 129 - i, i * 2) == -255);
92 }
93 data1[128] = 'c';
94 data2[128] = 'e';
95 for (i = 1; i < 66; i++) {
96 assert(memcmp(data1 + 128, data2 + 128, i) == -2);
97 assert(memcmp(data2 + 128, data1 + 128, i) == 2);
98 assert(memcmp(data1 + 129 - i, data2 + 129 - i, i) == -2);
99 assert(memcmp(data2 + 129 - i, data1 + 129 - i, i) == 2);
100 assert(memcmp(data1 + 129 - i, data2 + 129 - i, i * 2) == -2);
101 assert(memcmp(data2 + 129 - i, data1 + 129 - i, i * 2) == 2);
102 }
103 memset(data1 + 129, 'A', sizeof(data1) - 129);
104 memset(data2 + 129, 'Z', sizeof(data2) - 129);
105 for (i = 1; i < 66; i++) {
106 assert(memcmp(data1 + 128, data2 + 128, i) == -2);
107 assert(memcmp(data2 + 128, data1 + 128, i) == 2);
108 assert(memcmp(data1 + 129 - i, data2 + 129 - i, i) == -2);
109 assert(memcmp(data2 + 129 - i, data1 + 129 - i, i) == 2);
110 assert(memcmp(data1 + 129 - i, data2 + 129 - i, i * 2) == -2);
111 assert(memcmp(data2 + 129 - i, data1 + 129 - i, i * 2) == 2);
112 }
113 }
114
ATF_TP_ADD_TCS(tp)115 ATF_TP_ADD_TCS(tp)
116 {
117
118 ATF_TP_ADD_TC(tp, zero);
119 ATF_TP_ADD_TC(tp, eq);
120 ATF_TP_ADD_TC(tp, neq);
121 ATF_TP_ADD_TC(tp, diff);
122
123 return (atf_no_error());
124 }
125