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/* Apache License, Version 2.0 */
#include "testing/testing.h"
#define GHASH_INTERNAL_API
extern "C" {
#include "BLI_utildefines.h"
#include "BLI_ghash.h"
#include "BLI_rand.h"
}
#define TESTCASE_SIZE 10000
/* Only keeping this in case here, for now. */
#define PRINTF_GHASH_STATS(_gh) \
{ \
double q, lf, var, pempty, poverloaded; \
int bigb; \
q = BLI_ghash_calc_quality_ex((_gh), &lf, &var, &pempty, &poverloaded, &bigb); \
printf("GHash stats (%d entries):\n\t" \
"Quality (the lower the better): %f\n\tVariance (the lower the better): %f\n\tLoad: %f\n\t" \
"Empty buckets: %.2f%%\n\tOverloaded buckets: %.2f%% (biggest bucket: %d)\n", \
BLI_ghash_size(_gh), q, var, lf, pempty * 100.0, poverloaded * 100.0, bigb); \
} void (0)
/* Note: for pure-ghash testing, nature of the keys and data have absolutely no importance! So here we just use mere
* random integers stored in pointers. */
static void init_keys(unsigned int keys[TESTCASE_SIZE], const int seed)
{
RNG *rng = BLI_rng_new(seed);
unsigned int *k;
int i;
for (i = 0, k = keys; i < TESTCASE_SIZE; ) {
/* Risks of collision are low, but they do exist.
* And we cannot use a GSet, since we test that here! */
int j, t = BLI_rng_get_uint(rng);
for (j = i; j--; ) {
if (keys[j] == t) {
continue;
}
}
*k = t;
i++;
k++;
}
BLI_rng_free(rng);
}
/* Here we simply insert and then lookup all keys, ensuring we do get back the expected stored 'data'. */
TEST(ghash, InsertLookup)
{
GHash *ghash = BLI_ghash_new(BLI_ghashutil_inthash_p, BLI_ghashutil_intcmp, __func__);
unsigned int keys[TESTCASE_SIZE], *k;
int i;
init_keys(keys, 0);
for (i = TESTCASE_SIZE, k = keys; i--; k++) {
BLI_ghash_insert(ghash, SET_UINT_IN_POINTER(*k), SET_UINT_IN_POINTER(*k));
}
EXPECT_EQ(TESTCASE_SIZE, BLI_ghash_size(ghash));
for (i = TESTCASE_SIZE, k = keys; i--; k++) {
void *v = BLI_ghash_lookup(ghash, SET_UINT_IN_POINTER(*k));
EXPECT_EQ(*k, GET_UINT_FROM_POINTER(v));
}
BLI_ghash_free(ghash, NULL, NULL);
}
/* Here we simply insert and then remove all keys, ensuring we do get an empty, unshrinked ghash. */
TEST(ghash, InsertRemove)
{
GHash *ghash = BLI_ghash_new(BLI_ghashutil_inthash_p, BLI_ghashutil_intcmp, __func__);
unsigned int keys[TESTCASE_SIZE], *k;
int i, bkt_size;
init_keys(keys, 10);
for (i = TESTCASE_SIZE, k = keys; i--; k++) {
BLI_ghash_insert(ghash, SET_UINT_IN_POINTER(*k), SET_UINT_IN_POINTER(*k));
}
EXPECT_EQ(TESTCASE_SIZE, BLI_ghash_size(ghash));
bkt_size = BLI_ghash_buckets_size(ghash);
for (i = TESTCASE_SIZE, k = keys; i--; k++) {
void *v = BLI_ghash_popkey(ghash, SET_UINT_IN_POINTER(*k), NULL);
EXPECT_EQ(*k, GET_UINT_FROM_POINTER(v));
}
EXPECT_EQ(0, BLI_ghash_size(ghash));
EXPECT_EQ(bkt_size, BLI_ghash_buckets_size(ghash));
BLI_ghash_free(ghash, NULL, NULL);
}
/* Same as above, but this time we allow ghash to shrink. */
TEST(ghash, InsertRemoveShrink)
{
GHash *ghash = BLI_ghash_new(BLI_ghashutil_inthash_p, BLI_ghashutil_intcmp, __func__);
unsigned int keys[TESTCASE_SIZE], *k;
int i, bkt_size;
BLI_ghash_flag_set(ghash, GHASH_FLAG_ALLOW_SHRINK);
init_keys(keys, 20);
for (i = TESTCASE_SIZE, k = keys; i--; k++) {
BLI_ghash_insert(ghash, SET_UINT_IN_POINTER(*k), SET_UINT_IN_POINTER(*k));
}
EXPECT_EQ(TESTCASE_SIZE, BLI_ghash_size(ghash));
bkt_size = BLI_ghash_buckets_size(ghash);
for (i = TESTCASE_SIZE, k = keys; i--; k++) {
void *v = BLI_ghash_popkey(ghash, SET_UINT_IN_POINTER(*k), NULL);
EXPECT_EQ(*k, GET_UINT_FROM_POINTER(v));
}
EXPECT_EQ(0, BLI_ghash_size(ghash));
EXPECT_LT(BLI_ghash_buckets_size(ghash), bkt_size);
BLI_ghash_free(ghash, NULL, NULL);
}
/* Check copy. */
TEST(ghash, Copy)
{
GHash *ghash = BLI_ghash_new(BLI_ghashutil_inthash_p, BLI_ghashutil_intcmp, __func__);
GHash *ghash_copy;
unsigned int keys[TESTCASE_SIZE], *k;
int i;
init_keys(keys, 30);
for (i = TESTCASE_SIZE, k = keys; i--; k++) {
BLI_ghash_insert(ghash, SET_UINT_IN_POINTER(*k), SET_UINT_IN_POINTER(*k));
}
EXPECT_EQ(TESTCASE_SIZE, BLI_ghash_size(ghash));
ghash_copy = BLI_ghash_copy(ghash, NULL, NULL);
EXPECT_EQ(TESTCASE_SIZE, BLI_ghash_size(ghash_copy));
EXPECT_EQ(BLI_ghash_buckets_size(ghash), BLI_ghash_buckets_size(ghash_copy));
for (i = TESTCASE_SIZE, k = keys; i--; k++) {
void *v = BLI_ghash_lookup(ghash_copy, SET_UINT_IN_POINTER(*k));
EXPECT_EQ(*k, GET_UINT_FROM_POINTER(v));
}
BLI_ghash_free(ghash, NULL, NULL);
BLI_ghash_free(ghash_copy, NULL, NULL);
}
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