2 * testcode/unitecs.c - unit test for ecs routines.
4 * Copyright (c) 2013, NLnet Labs. All rights reserved.
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39 * Calls ecs related unit tests. Exits with code 1 on a failure.
47 #include "util/module.h"
48 #include "testcode/unitmain.h"
49 #include "edns-subnet/addrtree.h"
50 #include "edns-subnet/subnetmod.h"
53 void printkey(addrkey_t *k, addrlen_t bits)
56 int bytes = bits/8 + ((bits%8)>0);
58 for (byte = 0; byte < bytes; byte++) {
59 //~ if (byte+1 == bytes)
60 //~ msk = 0xFF<<(8-bits%8);
61 printf("%02x ", k[byte]&msk);
65 void print_tree(struct addrnode* node, int indent, int maxdepth)
67 struct addredge* edge;
69 if (indent == 0) printf("-----Tree-----\n");
70 if (indent > maxdepth) {
74 printf("[node elem:%d] (%d)\n", node->elem != NULL, node);
75 for (i = 0; i<2; i++) {
77 for (s = 0; s < indent; s++) printf(" ");
78 printkey(node->edge[i]->str, node->edge[i]->len);
79 printf("(len %d bits, %d bytes) ", node->edge[i]->len,
80 node->edge[i]->len/8 + ((node->edge[i]->len%8)>0));
81 print_tree(node->edge[i]->node, indent+1, maxdepth);
84 if (indent == 0) printf("-----Tree-----");
88 /* what should we check?
89 * X - is it balanced? (a node with 1 child should not have
90 * a node with 1 child MUST have elem
91 * child must be sub of parent
92 * edge must be longer than parent edge
94 static int addrtree_inconsistent_subtree(struct addrtree* tree,
95 struct addredge* parent_edge, addrlen_t depth)
97 struct addredge* edge;
98 struct addrnode* node = parent_edge->node;
100 if (depth > tree->max_depth) return 15;
101 childcount = (node->edge[0] != NULL) + (node->edge[1] != NULL);
102 /* Only nodes with 2 children should possibly have no element. */
103 if (childcount < 2 && !node->elem) return 10;
104 for (i = 0; i<2; i++) {
105 edge = node->edge[i];
107 if (!edge->node) return 11;
108 if (!edge->str) return 12;
109 if (edge->len <= parent_edge->len) return 13;
110 if (!unittest_wrapper_addrtree_issub(parent_edge->str,
111 parent_edge->len, edge->str, edge->len, 0))
113 if ((r = addrtree_inconsistent_subtree(tree, edge, depth+1)) != 0)
119 static int addrtree_inconsistent(struct addrtree* tree)
121 struct addredge* edge;
125 if (!tree->root) return 1;
127 for (i = 0; i<2; i++) {
128 edge = tree->root->edge[i];
130 if (!edge->node) return 3;
131 if (!edge->str) return 4;
132 if ((r = addrtree_inconsistent_subtree(tree, edge, 1)) != 0)
138 static addrlen_t randomkey(addrkey_t **k, int maxlen)
141 int bits = rand() % maxlen;
142 int bytes = bits/8 + (bits%8>0); /*ceil*/
143 *k = (addrkey_t *) malloc(bytes * sizeof(addrkey_t));
144 for (byte = 0; byte < bytes; byte++) {
145 (*k)[byte] = (addrkey_t)(rand() & 0xFF);
147 return (addrlen_t)bits;
150 static void elemfree(void *envptr, void *elemptr)
152 struct reply_info *elem = (struct reply_info *)elemptr;
157 static void consistency_test(void)
164 struct module_env env;
165 struct reply_info *elem;
167 unit_show_func("edns-subnet/addrtree.h", "Tree consistency check");
168 srand(9195); /* just some value for reproducibility */
170 t = addrtree_create(100, &elemfree, &unittest_wrapper_subnetmod_sizefunc, &env, 0);
171 count = t->node_count;
172 unit_assert(count == 0);
173 for (i = 0; i < 1000; i++) {
174 l = randomkey(&k, 128);
175 elem = (struct reply_info *) calloc(1, sizeof(struct reply_info));
176 addrtree_insert(t, k, l, 64, elem, timenow + 10, timenow);
177 /* This should always hold because no items ever expire. They
178 * could be overwritten, though. */
179 unit_assert( count <= t->node_count );
180 count = t->node_count;
182 unit_assert( !addrtree_inconsistent(t) );
186 unit_show_func("edns-subnet/addrtree.h", "Tree consistency with purge");
187 t = addrtree_create(8, &elemfree, &unittest_wrapper_subnetmod_sizefunc, &env, 0);
188 unit_assert(t->node_count == 0);
189 for (i = 0; i < 1000; i++) {
190 l = randomkey(&k, 128);
191 elem = (struct reply_info *) calloc(1, sizeof(struct reply_info));
192 addrtree_insert(t, k, l, 64, elem, i + 10, i);
194 unit_assert( !addrtree_inconsistent(t) );
198 unit_show_func("edns-subnet/addrtree.h", "Tree consistency with limit");
199 t = addrtree_create(8, &elemfree, &unittest_wrapper_subnetmod_sizefunc, &env, 27);
200 unit_assert(t->node_count == 0);
201 for (i = 0; i < 1000; i++) {
202 l = randomkey(&k, 128);
203 elem = (struct reply_info *) calloc(1, sizeof(struct reply_info));
204 addrtree_insert(t, k, l, 64, elem, i + 10, i);
205 unit_assert( t->node_count <= 27);
207 unit_assert( !addrtree_inconsistent(t) );
212 static void issub_test(void)
214 addrkey_t k1[] = {0x55, 0x55, 0x5A};
215 addrkey_t k2[] = {0x55, 0x5D, 0x5A};
216 unit_show_func("edns-subnet/addrtree.h", "issub");
217 unit_assert( !unittest_wrapper_addrtree_issub(k1, 24, k2, 24, 0) );
218 unit_assert( unittest_wrapper_addrtree_issub(k1, 8, k2, 16, 0) );
219 unit_assert( unittest_wrapper_addrtree_issub(k2, 12, k1, 13, 0) );
220 unit_assert( !unittest_wrapper_addrtree_issub(k1, 16, k2, 12, 0) );
221 unit_assert( unittest_wrapper_addrtree_issub(k1, 12, k2, 12, 0) );
222 unit_assert( !unittest_wrapper_addrtree_issub(k1, 13, k2, 13, 0) );
223 unit_assert( unittest_wrapper_addrtree_issub(k1, 24, k2, 24, 13) );
224 unit_assert( !unittest_wrapper_addrtree_issub(k1, 24, k2, 20, 13) );
225 unit_assert( unittest_wrapper_addrtree_issub(k1, 20, k2, 24, 13) );
228 static void getbit_test(void)
230 addrkey_t k1[] = {0x55, 0x55, 0x5A};
232 unit_show_func("edns-subnet/addrtree.h", "getbit");
233 for(i = 0; i<20; i++) {
234 unit_assert( unittest_wrapper_addrtree_getbit(k1, 20, (addrlen_t)i) == (i&1) );
238 static void bits_common_test(void)
240 addrkey_t k1[] = {0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC, 0xDE, 0xF0};
241 addrkey_t k2[] = {0,0,0,0,0,0,0,0};
244 unit_show_func("edns-subnet/addrtree.h", "bits_common");
245 for(i = 0; i<64; i++) {
246 unit_assert( unittest_wrapper_addrtree_bits_common(k1, 64, k1, 64, i) == 64 );
248 for(i = 0; i<8; i++) {
249 k2[i] = k1[i]^(1<<i);
251 unit_assert( unittest_wrapper_addrtree_bits_common(k1, 64, k2, 64, 0) == 0*8+7 );
252 unit_assert( unittest_wrapper_addrtree_bits_common(k1, 64, k2, 64, 8) == 1*8+6 );
253 unit_assert( unittest_wrapper_addrtree_bits_common(k1, 64, k2, 64, 16) == 2*8+5 );
254 unit_assert( unittest_wrapper_addrtree_bits_common(k1, 64, k2, 64, 24) == 3*8+4 );
255 unit_assert( unittest_wrapper_addrtree_bits_common(k1, 64, k2, 64, 32) == 4*8+3 );
256 unit_assert( unittest_wrapper_addrtree_bits_common(k1, 64, k2, 64, 40) == 5*8+2 );
257 unit_assert( unittest_wrapper_addrtree_bits_common(k1, 64, k2, 64, 48) == 6*8+1 );
258 unit_assert( unittest_wrapper_addrtree_bits_common(k1, 64, k2, 64, 56) == 7*8+0 );
261 static void cmpbit_test(void)
263 addrkey_t k1[] = {0xA5, 0x0F};
264 addrkey_t k2[] = {0x5A, 0xF0};
267 unit_show_func("edns-subnet/addrtree.h", "cmpbit");
268 for(i = 0; i<16; i++) {
269 unit_assert( !unittest_wrapper_addrtree_cmpbit(k1,k1,i) );
270 unit_assert( unittest_wrapper_addrtree_cmpbit(k1,k2,i) );
276 unit_show_feature("ecs");
283 #endif /* CLIENT_SUBNET */