1/* $NetBSD: t_strcmp.c,v 1.4 2012/03/25 08:17:54 joerg Exp $ */
2
3/*
4 * Written by J.T. Conklin <jtc@acorntoolworks.com>
5 * Public domain.
6 */
7
8#include <atf-c.h>
9#include <string.h>
10#include <unistd.h>
11#include <stdio.h>
12#include <stdlib.h>
13
14ATF_TC(strcmp_basic);
15ATF_TC_HEAD(strcmp_basic, tc)
16{
17        atf_tc_set_md_var(tc, "descr", "Test strcmp(3) results, #1");
18}
19
20ATF_TC_BODY(strcmp_basic, tc)
21{
22	/* try to trick the compiler */
23	int (*f)(const char *, const char *s) = strcmp;
24
25	unsigned int a0, a1, t;
26	char buf0[64];
27	char buf1[64];
28	int ret;
29
30	struct tab {
31		const char*	val0;
32		const char*	val1;
33		int		ret;
34	};
35
36	const struct tab tab[] = {
37		{ "",			"",			0 },
38
39		{ "a",			"a",			0 },
40		{ "a",			"b",			-1 },
41		{ "b",			"a",			+1 },
42		{ "",			"a",			-1 },
43		{ "a",			"",			+1 },
44
45		{ "aa",			"aa",			0 },
46		{ "aa",			"ab",			-1 },
47		{ "ab",			"aa",			+1 },
48		{ "a",			"aa",			-1 },
49		{ "aa",			"a",			+1 },
50
51		{ "aaa",		"aaa",			0 },
52		{ "aaa",		"aab",			-1 },
53		{ "aab",		"aaa",			+1 },
54		{ "aa",			"aaa",			-1 },
55		{ "aaa",		"aa",			+1 },
56
57		{ "aaaa",		"aaaa",			0 },
58		{ "aaaa",		"aaab",			-1 },
59		{ "aaab",		"aaaa",			+1 },
60		{ "aaa",		"aaaa",			-1 },
61		{ "aaaa",		"aaa",			+1 },
62
63		{ "aaaaa",		"aaaaa",		0 },
64		{ "aaaaa",		"aaaab",		-1 },
65		{ "aaaab",		"aaaaa",		+1 },
66		{ "aaaa",		"aaaaa",		-1 },
67		{ "aaaaa",		"aaaa",			+1 },
68
69		{ "aaaaaa",		"aaaaaa",		0 },
70		{ "aaaaaa",		"aaaaab",		-1 },
71		{ "aaaaab",		"aaaaaa",		+1 },
72		{ "aaaaa",		"aaaaaa",		-1 },
73		{ "aaaaaa",		"aaaaa",		+1 },
74	};
75
76	for (a0 = 0; a0 < sizeof(long); ++a0) {
77		for (a1 = 0; a1 < sizeof(long); ++a1) {
78			for (t = 0; t < __arraycount(tab); ++t) {
79				memcpy(&buf0[a0], tab[t].val0,
80				       strlen(tab[t].val0) + 1);
81				memcpy(&buf1[a1], tab[t].val1,
82				       strlen(tab[t].val1) + 1);
83
84				ret = f(&buf0[a0], &buf1[a1]);
85
86				if ((ret == 0 && tab[t].ret != 0) ||
87				    (ret <  0 && tab[t].ret >= 0) ||
88				    (ret >  0 && tab[t].ret <= 0)) {
89					fprintf(stderr, "a0 %d, a1 %d, t %d\n",
90					    a0, a1, t);
91					fprintf(stderr, "\"%s\" \"%s\" %d\n",
92					    &buf0[a0], &buf1[a1], ret);
93					atf_tc_fail("Check stderr for details");
94				}
95			}
96		}
97	}
98}
99
100ATF_TC(strcmp_simple);
101ATF_TC_HEAD(strcmp_simple, tc)
102{
103        atf_tc_set_md_var(tc, "descr", "Test strcmp(3) results, #2");
104}
105
106ATF_TC_BODY(strcmp_simple, tc)
107{
108	char buf1[10] = "xxx";
109	char buf2[10] = "xxy";
110
111	ATF_CHECK(strcmp(buf1, buf1) == 0);
112	ATF_CHECK(strcmp(buf2, buf2) == 0);
113
114	ATF_CHECK(strcmp("x\xf6x", "xox") > 0);
115	ATF_CHECK(strcmp("xxx", "xxxyyy") < 0);
116	ATF_CHECK(strcmp("xxxyyy", "xxx") > 0);
117
118	ATF_CHECK(strcmp(buf1 + 0, buf2 + 0) < 0);
119	ATF_CHECK(strcmp(buf1 + 1, buf2 + 1) < 0);
120	ATF_CHECK(strcmp(buf1 + 2, buf2 + 2) < 0);
121	ATF_CHECK(strcmp(buf1 + 3, buf2 + 3) == 0);
122
123	ATF_CHECK(strcmp(buf2 + 0, buf1 + 0) > 0);
124	ATF_CHECK(strcmp(buf2 + 1, buf1 + 1) > 0);
125	ATF_CHECK(strcmp(buf2 + 2, buf1 + 2) > 0);
126	ATF_CHECK(strcmp(buf2 + 3, buf1 + 3) == 0);
127}
128
129ATF_TP_ADD_TCS(tp)
130{
131
132	ATF_TP_ADD_TC(tp, strcmp_basic);
133	ATF_TP_ADD_TC(tp, strcmp_simple);
134
135	return atf_no_error();
136}
137