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mirror of https://gitlab.nic.cz/labs/bird.git synced 2025-01-06 00:51:53 +00:00

Birdtest: filter/trie

Thanks to Santiago for reuse here his code.
bt_rand_num() -> bt_random()
This commit is contained in:
Pavel Tvrdík 2015-08-27 09:25:28 +02:00
parent 45e65e8232
commit 4fb506466c
10 changed files with 216 additions and 13 deletions

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@ -104,7 +104,7 @@ get_random_degenerated_left_tree(uint nodes_count)
{
uint selected_idx;
do {
selected_idx = bt_rand_num() % nodes_count;
selected_idx = bt_random() % nodes_count;
} while(avaible_indexes[selected_idx] != 0);
avaible_indexes[selected_idx] = 1;
@ -127,7 +127,7 @@ get_balanced_tree_with_ranged_values(uint nodes_count)
{
n->from.type = n->to.type = T_INT;
n->from.val.i = idx;
idx += (uint)bt_rand_num() / nodes_count; /* (... / nodes_count) preventing overflow an uint idx */
idx += (uint)bt_random() / nodes_count; /* (... / nodes_count) preventing overflow an uint idx */
n->to.val.i = idx++;
}
@ -250,7 +250,7 @@ t_find_ranges(void)
struct f_val looking_up_value = {
.type = T_INT
};
for(looking_up_value.val.i = 0; looking_up_value.val.i <= max_value; looking_up_value.val.i += ((uint)bt_rand_num()/nodes_count))
for(looking_up_value.val.i = 0; looking_up_value.val.i <= max_value; looking_up_value.val.i += ((uint)bt_random()/nodes_count))
{
struct f_tree *found_tree = find_tree(tree, looking_up_value);
bt_debug("searching: %u \n", looking_up_value.val.i);

187
filter/trie_test.c Normal file
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@ -0,0 +1,187 @@
/*
* Filters: Utility Functions Tests
*
* (c) 2015 CZ.NIC z.s.p.o.
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#include "test/birdtest.h"
#include "test/bt-utils.h"
#include "filter/filter.h"
#define TESTS_NUM 10
#define PREFIXES_NUM 10
#define PREFIX_TESTS_NUM 10000
#define BIG_BUFFER_SIZE 10000
struct f_extended_prefix {
node n; /* node in prefixes list */
struct f_prefix prefix;
int l;
int h;
};
static u32
xrandom(u32 max)
{
return ((u32)bt_random() % max);
}
static int
is_prefix_included(list *prefixes, struct f_prefix *needle)
{
struct f_extended_prefix *n;
WALK_LIST(n, *prefixes)
{
ip_addr cmask = ipa_mkmask(MIN(n->prefix.len, needle->len));
if ((ipa_compare(ipa_and(n->prefix.ip, cmask), ipa_and(needle->ip, cmask)) == 0) &&
(n->l <= needle->len) && (needle->len <= n->h))
{
bt_debug("FOUND\t" PRIipa "/%d %d-%d\n", ARGipa(n->prefix.ip), n->prefix.len, n->l, n->h);
return 1; /* OK */
}
}
return 0; /* FAIL */
}
static struct f_prefix
get_random_prefix(void)
{
struct f_prefix f = {
#ifdef IPV6
.ip = ipa_build6(bt_random(), bt_random(), bt_random(), bt_random()),
.len = xrandom(120)+8,
#else
.ip = ipa_build4(xrandom(256), xrandom(256), xrandom(256), xrandom(256)),
.len = xrandom(25)+8,
#endif
};
return f;
}
static void
generate_random_prefixes(list *prefixes)
{
int l, h, x, i;
for (i = 0; i < PREFIXES_NUM; i++)
{
struct f_prefix f = get_random_prefix();
#ifdef IPV6
l = xrandom(129);
h = xrandom(129);
#else
l = xrandom(33);
h = xrandom(33);
#endif
if (h < l)
{
x = l;
l = h;
h = x;
}
struct f_extended_prefix *px = calloc(1, sizeof(struct f_extended_prefix));
px->prefix = f;
px->l = l;
px->h = h;
bt_debug("ADD\t" PRIipa "/%d %d-%d\n", ARGipa(px->prefix.ip), px->prefix.len, px->l, px->h);
add_tail(prefixes, &px->n);
}
}
static int
t_match_prefix(void)
{
bt_bird_init_with_simple_configuration();
uint round;
for (round = 0; round < TESTS_NUM; round++)
{
list prefixes; /* of structs f_extended_prefix */
init_list(&prefixes);
struct f_trie *trie = f_new_trie(config->mem, sizeof(struct f_trie_node));
generate_random_prefixes(&prefixes);
struct f_extended_prefix *n;
WALK_LIST(n, prefixes)
{
trie_add_prefix(trie, n->prefix.ip, n->prefix.len, n->l, n->h);
}
int i;
for (i = 0; i < PREFIX_TESTS_NUM; i++)
{
struct f_prefix f = get_random_prefix();
bt_debug("TEST\t" PRIipa "/%d\n", ARGipa(f.ip), f.len);
int should_be = is_prefix_included(&prefixes, &f);
int is_there = trie_match_prefix(trie, f.ip, f.len);
bt_assert_msg(should_be == is_there, "Prefix " PRIipa "/%d %s", ARGipa(f.ip), f.len, (should_be ? "should be founded but was not founded in trie" : "is not inside trie but searching was false positive."));
}
struct f_extended_prefix *nxt;
WALK_LIST_DELSAFE(n, nxt, prefixes)
{
free(n);
}
}
return BT_SUCCESS;
}
static int
t_trie_same(void)
{
bt_bird_init_with_simple_configuration();
int round;
for (round = 0; round < TESTS_NUM*4; round++)
{
struct f_trie * trie1 = f_new_trie(config->mem, sizeof(struct f_trie_node));
struct f_trie * trie2 = f_new_trie(config->mem, sizeof(struct f_trie_node));
list prefixes; /* of structs f_extended_prefix */
init_list(&prefixes);
int i;
for (i = 0; i < 100; i++)
generate_random_prefixes(&prefixes);
struct f_extended_prefix *n;
WALK_LIST(n, prefixes)
{
trie_add_prefix(trie1, n->prefix.ip, n->prefix.len, n->l, n->h);
}
WALK_LIST_BACKWARDS(n, prefixes)
{
trie_add_prefix(trie2, n->prefix.ip, n->prefix.len, n->l, n->h);
}
bt_assert_msg(trie_same(trie1, trie2), "Trie1 and trie2 (backward fullfill) are not same!");
struct f_extended_prefix *nxt;
WALK_LIST_DELSAFE(n, nxt, prefixes)
{
free(n);
}
}
return BT_SUCCESS;
}
int
main(int argc, char *argv[])
{
bt_init(argc, argv);
bt_test_suite(t_match_prefix, "Testing random prefix matching");
bt_test_suite(t_trie_same, "A trie filled forward should be same with a trie filled backward.");
return bt_end();
}

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@ -75,7 +75,7 @@ t_masklen(void)
check_mask(((u32) (0xffffffff << (32-i))) & 0xffffffff);
for (i = 0; i <= MAX_NUM; i++)
check_mask(bt_rand_num());
check_mask(bt_random());
return BT_SUCCESS;
}
@ -114,7 +114,7 @@ t_log2(void)
check_log2(i);
for (i = 1; i < MAX_NUM; i++)
check_log2(bt_rand_num() % 0xffff);
check_log2(bt_random() % 0xffff);
return BT_SUCCESS;
}

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@ -36,7 +36,7 @@ fill_expected_array(void)
int i;
for (i = 0; i < MAX_NUM; i++)
expected[i] = bt_rand_num();
expected[i] = bt_random();
}
static void
@ -86,7 +86,7 @@ t_buffer_pop(void)
for (i = MAX_NUM-1; i >= MAX_NUM/2; i--)
BUFFER_POP(buffer);
for (i = MAX_NUM/2; i < MAX_NUM; i++)
BUFFER_PUSH(buffer) = expected[i] = bt_rand_num();
BUFFER_PUSH(buffer) = expected[i] = bt_random();
is_buffer_as_expected(&buffer);
/* POP all of elements */

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@ -48,7 +48,7 @@ t_calculate(void)
int i;
for (i = 0; i < MAX_NUM; i++)
a[i] = bt_rand_num();
a[i] = bt_random();
u16 sum_calculated = ipsum_calculate(a, sizeof(a), NULL);
u16 sum_calculated_2 = ipsum_calculate(&a[0], sizeof(u32)*(MAX_NUM/2), &a[MAX_NUM/2], sizeof(u32)*(MAX_NUM - MAX_NUM/2), NULL);
@ -71,7 +71,7 @@ t_verify(void)
int i;
for (i = 0; i < MAX_NUM; i++)
a[i] = bt_rand_num();
a[i] = bt_random();
u16 sum = ipsum_calculate_expected(a);

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@ -141,7 +141,7 @@ t_insert_find_random(void)
struct test_node *node;
for (i = 0; i < MAX_NUM; i++)
{
nodes[i].key = bt_rand_num();
nodes[i].key = bt_random();
node = &nodes[i];
HASH_INSERT(hash, TEST, node);
}

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@ -152,7 +152,7 @@ t_heap_insert_random(void)
for (i = 1; i <= MAX_NUM; i++)
{
heap[i] = expected[i] = bt_rand_num();
heap[i] = expected[i] = bt_random();
HEAP_INSERT(heap, ++num, int, MY_CMP, MY_HEAP_SWAP);
show_heap();
bt_assert(is_heap_valid(heap, num));

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@ -37,7 +37,7 @@ uint bt_success;
uint bt_test_suite_success;
long int
bt_rand_num(void)
bt_random(void)
{
/* Seeded in bt_init() */
long int rand_low, rand_high;

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@ -12,6 +12,7 @@
#include <stdint.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
extern uint bt_success;
extern uint bt_test_suite_success;
@ -28,7 +29,7 @@ extern const char *bt_test_id;
void bt_init(int argc, char *argv[]);
int bt_end(void);
void bt_test_suite_base(int (*test_fn)(const void *), const char *test_id, const void *test_fn_argument, int forked, int timeout, const char *dsc, ...);
long int bt_rand_num(void);
long int bt_random(void);
void bt_result(const char *result, const char *msg, ...);
#define BT_SUCCESS 0

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@ -11,6 +11,21 @@
#include "sysdep/config.h"
#define PRIip4 "%d.%d.%d.%d"
#define ARGip4(x) ((x).addr >> 24) & 0xff, ((x).addr >> 16) & 0xff, ((x).addr >> 8) & 0xff, (x).addr & 0xff
#define PRIip6 "%04X:%04X:%04X:%04X:%04X:%04X:%04X:%04X"
#define ARGip6_HIGH(x,i) (((x).addr[(i)] >> 16) & 0xffff)
#define ARGip6_LOW(x,i) ((x).addr[(i)] & 0xffff)
#define ARGip6_BOTH(x,i) ARGip6_HIGH(x,i), ARGip6_LOW(x,i)
#define ARGip6(x) ARGip6_BOTH((x), 0), ARGip6_BOTH((x), 1), ARGip6_BOTH((x), 2), ARGip6_BOTH((x), 3)
#ifdef IPV6
#define PRIipa PRIip6
#define ARGipa(x) ARGip6(x)
#else
#define PRIipa PRIip4
#define ARGipa(x) ARGip4(x)
#endif
#define BT_CONFIG_PARSE_ROUTER_ID "router id 10.0.0.1; \n"
#define BT_CONFIG_PARSE_KERNEL_DEVICE "protocol device {} \n"
#define BT_CONFIG_SIMPLE BT_CONFIG_PARSE_ROUTER_ID BT_CONFIG_PARSE_KERNEL_DEVICE