xref: /freebsd/lib/libc/tests/sys/queue_test.c (revision a0ee8cc6)
1 /*-
2  * Copyright (c) 2015 EMC Corp.
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 <sys/queue.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 
34 #include <atf-c.h>
35 
36 ATF_TC(slist_test);
37 ATF_TC_HEAD(slist_test, tc)
38 {
39 
40 	atf_tc_set_md_var(tc, "descr", "SLIST macro feature tests");
41 }
42 
43 ATF_TC_BODY(slist_test, tc)
44 {
45 	SLIST_HEAD(stailhead, entry) head = SLIST_HEAD_INITIALIZER(head);
46 	struct entry {
47 		SLIST_ENTRY(entry) entries;
48 		int i;
49 	} *n1, *n2, *n3, *np;
50 	int i, j, length;
51 
52 	SLIST_INIT(&head);
53 
54 	printf("Ensuring SLIST_EMPTY works\n");
55 
56 	ATF_REQUIRE(SLIST_EMPTY(&head));
57 
58 	i = length = 0;
59 
60 	SLIST_FOREACH(np, &head, entries) {
61 		length++;
62 	}
63 	ATF_REQUIRE_EQ(length, 0);
64 
65 	printf("Ensuring SLIST_INSERT_HEAD works\n");
66 
67 	n1 = malloc(sizeof(struct entry));
68 	ATF_REQUIRE(n1 != NULL);
69 	n1->i = i++;
70 
71 	SLIST_INSERT_HEAD(&head, n1, entries);
72 
73 	printf("Ensuring SLIST_FIRST returns element 1\n");
74 	ATF_REQUIRE_EQ(SLIST_FIRST(&head), n1);
75 
76 	j = length = 0;
77 	SLIST_FOREACH(np, &head, entries) {
78 		ATF_REQUIRE_EQ_MSG(np->i, j,
79 		    "%d (entry counter) != %d (counter)", np->i, j);
80 		j++;
81 		length++;
82 	}
83 	ATF_REQUIRE_EQ(length, 1);
84 
85 	printf("Ensuring SLIST_INSERT_AFTER works\n");
86 
87 	n2 = malloc(sizeof(struct entry));
88 	ATF_REQUIRE(n2 != NULL);
89 	n2->i = i++;
90 
91 	SLIST_INSERT_AFTER(n1, n2, entries);
92 
93 	n3 = malloc(sizeof(struct entry));
94 	ATF_REQUIRE(n3 != NULL);
95 	n3->i = i++;
96 
97 	SLIST_INSERT_AFTER(n2, n3, entries);
98 
99 	j = length = 0;
100 	SLIST_FOREACH(np, &head, entries) {
101 		ATF_REQUIRE_EQ_MSG(np->i, j,
102 		    "%d (entry counter) != %d (counter)", np->i, j);
103 		j++;
104 		length++;
105 	}
106 	ATF_REQUIRE_EQ(length, 3);
107 
108 	printf("Ensuring SLIST_REMOVE_HEAD works\n");
109 
110 	printf("Ensuring SLIST_FIRST returns element 1\n");
111 	ATF_REQUIRE_EQ(SLIST_FIRST(&head), n1);
112 
113 	SLIST_REMOVE_HEAD(&head, entries);
114 
115 	printf("Ensuring SLIST_FIRST now returns element 2\n");
116 	ATF_REQUIRE_EQ(SLIST_FIRST(&head), n2);
117 
118 	j = 1; /* Starting point's 1 this time */
119 	length = 0;
120 	SLIST_FOREACH(np, &head, entries) {
121 		ATF_REQUIRE_EQ_MSG(np->i, j,
122 		    "%d (entry counter) != %d (counter)", np->i, j);
123 		j++;
124 		length++;
125 	}
126 	ATF_REQUIRE_EQ(length, 2);
127 
128 	printf("Ensuring SLIST_REMOVE_AFTER works by removing the tail\n");
129 
130 	SLIST_REMOVE_AFTER(n2, entries);
131 
132 	j = 1; /* Starting point's 1 this time */
133 	length = 0;
134 	SLIST_FOREACH(np, &head, entries) {
135 		ATF_REQUIRE_EQ_MSG(np->i, j,
136 		    "%d (entry counter) != %d (counter)", np->i, j);
137 		j++;
138 		length++;
139 	}
140 	ATF_REQUIRE_EQ(length, 1);
141 
142 	printf("Ensuring SLIST_FIRST returns element 2\n");
143 	ATF_REQUIRE_EQ(SLIST_FIRST(&head), n2);
144 
145 }
146 
147 ATF_TC(stailq_test);
148 ATF_TC_HEAD(stailq_test, tc)
149 {
150 
151 	atf_tc_set_md_var(tc, "descr", "STAILQ macro feature tests");
152 }
153 
154 ATF_TC_BODY(stailq_test, tc)
155 {
156 	STAILQ_HEAD(stailhead, entry) head = STAILQ_HEAD_INITIALIZER(head);
157 	struct entry {
158 		STAILQ_ENTRY(entry) entries;
159 		int i;
160 	} *n1, *n2, *n3, *np;
161 	int i, j, length;
162 
163 	printf("Ensuring empty STAILQs are treated properly\n");
164 	STAILQ_INIT(&head);
165 	ATF_REQUIRE(STAILQ_EMPTY(&head));
166 
167 	i = length = 0;
168 
169 	STAILQ_FOREACH(np, &head, entries) {
170 		length++;
171 	}
172 	ATF_REQUIRE_EQ(length, 0);
173 
174 	printf("Ensuring STAILQ_INSERT_HEAD works\n");
175 
176 	n1 = malloc(sizeof(struct entry));
177 	ATF_REQUIRE(n1 != NULL);
178 	n1->i = i++;
179 
180 	STAILQ_INSERT_HEAD(&head, n1, entries);
181 
182 	j = length = 0;
183 	STAILQ_FOREACH(np, &head, entries) {
184 		ATF_REQUIRE_EQ_MSG(np->i, j,
185 		    "%d (entry counter) != %d (counter)", np->i, j);
186 		j++;
187 		length++;
188 	}
189 	ATF_REQUIRE_EQ(length, 1);
190 
191 	printf("Ensuring STAILQ_INSERT_TAIL works\n");
192 
193 	n2 = malloc(sizeof(struct entry));
194 	ATF_REQUIRE(n2 != NULL);
195 	n2->i = i++;
196 
197 	STAILQ_INSERT_TAIL(&head, n2, entries);
198 
199 	n3 = malloc(sizeof(struct entry));
200 	ATF_REQUIRE(n3 != NULL);
201 	n3->i = i++;
202 
203 	STAILQ_INSERT_TAIL(&head, n3, entries);
204 
205 	j = length = 0;
206 	STAILQ_FOREACH(np, &head, entries) {
207 		ATF_REQUIRE_EQ_MSG(np->i, j,
208 		    "%d (entry counter) != %d (counter)", np->i, j);
209 		j++;
210 		length++;
211 	}
212 	ATF_REQUIRE_EQ(length, 3);
213 
214 	printf("Ensuring STAILQ_REMOVE_HEAD works\n");
215 
216 	STAILQ_REMOVE_HEAD(&head, entries);
217 
218 	j = 1; /* Starting point's 1 this time */
219 	length = 0;
220 	STAILQ_FOREACH(np, &head, entries) {
221 		ATF_REQUIRE_EQ_MSG(np->i, j,
222 		    "%d (entry counter) != %d (counter)", np->i, j);
223 		j++;
224 		length++;
225 	}
226 	ATF_REQUIRE_EQ(length, 2);
227 
228 }
229 
230 ATF_TP_ADD_TCS(tp)
231 {
232 
233 	ATF_TP_ADD_TC(tp, slist_test);
234 	ATF_TP_ADD_TC(tp, stailq_test);
235 
236 	return (atf_no_error());
237 }
238