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Fix memory leak in oid shortener tests

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This commit is contained in:
Russell Belfer 2013-05-29 09:18:21 -07:00
parent 504a4fd140
commit ca9b1702ab
1 changed files with 57 additions and 53 deletions
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110
tests-clar/object/raw/short.c
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@ -22,17 +22,55 @@ void test_object_raw_short__oid_shortener_no_duplicates(void)
git_oid_shorten_free(os);
}
static int insert_sequential_oids(
char ***out, git_oid_shorten *os, int n, int fail)
{
int i, min_len = 0;
char numbuf[16];
git_oid oid;
char **oids = git__calloc(n, sizeof(char *));
cl_assert(oids != NULL);
for (i = 0; i < n; ++i) {
p_snprintf(numbuf, sizeof(numbuf), "%u", (unsigned int)i);
git_hash_buf(&oid, numbuf, strlen(numbuf));
oids[i] = git__malloc(GIT_OID_HEXSZ + 1);
cl_assert(oids[i]);
git_oid_nfmt(oids[i], GIT_OID_HEXSZ + 1, &oid);
min_len = git_oid_shorten_add(os, oids[i]);
/* After "fail", we expect git_oid_shorten_add to fail */
if (fail >= 0 && i >= fail)
cl_assert(min_len < 0);
else
cl_assert(min_len >= 0);
}
*out = oids;
return min_len;
}
static void free_oids(int n, char **oids)
{
int i;
for (i = 0; i < n; ++i) {
git__free(oids[i]);
}
git__free(oids);
}
void test_object_raw_short__oid_shortener_stresstest_git_oid_shorten(void)
{
#define MAX_OIDS 1000
git_oid_shorten *os;
char *oids[MAX_OIDS];
char number_buffer[16];
git_oid oid;
size_t i, j;
int min_len = 0, found_collision;
char **oids;
os = git_oid_shorten_new(0);
cl_assert(os != NULL);
@ -40,21 +78,8 @@ void test_object_raw_short__oid_shortener_stresstest_git_oid_shorten(void)
/*
* Insert in the shortener 1000 unique SHA1 ids
*/
for (i = 0; i < MAX_OIDS; ++i) {
char *oid_text;
p_snprintf(number_buffer, 16, "%u", (unsigned int)i);
git_hash_buf(&oid, number_buffer, strlen(number_buffer));
oid_text = git__malloc(GIT_OID_HEXSZ + 1);
git_oid_fmt(oid_text, &oid);
oid_text[GIT_OID_HEXSZ] = 0;
min_len = git_oid_shorten_add(os, oid_text);
cl_assert(min_len >= 0);
oids[i] = oid_text;
}
min_len = insert_sequential_oids(&oids, os, MAX_OIDS, MAX_OIDS);
cl_assert(min_len > 0);
/*
* Compare the first `min_char - 1` characters of each
@ -63,12 +88,12 @@ void test_object_raw_short__oid_shortener_stresstest_git_oid_shorten(void)
*/
found_collision = 0;
for (i = 0; i < MAX_OIDS; ++i) {
for (j = 0; j < MAX_OIDS; ++j) {
if (i != j && memcmp(oids[i], oids[j], min_len - 1) == 0)
for (j = i + 1; j < MAX_OIDS; ++j) {
if (memcmp(oids[i], oids[j], min_len - 1) == 0)
found_collision = 1;
}
}
cl_assert(found_collision == 1);
cl_assert_equal_b(true, found_collision);
/*
* Compare the first `min_char` characters of each
@ -77,57 +102,36 @@ void test_object_raw_short__oid_shortener_stresstest_git_oid_shorten(void)
*/
found_collision = 0;
for (i = 0; i < MAX_OIDS; ++i) {
for (j = 0; j < MAX_OIDS; ++j) {
if (i != j && memcmp(oids[i], oids[j], min_len) == 0)
for (j = i + 1; j < MAX_OIDS; ++j) {
if (memcmp(oids[i], oids[j], min_len) == 0)
found_collision = 1;
}
}
cl_assert(found_collision == 0);
cl_assert_equal_b(false, found_collision);
/* cleanup */
for (i = 0; i < MAX_OIDS; ++i)
git__free(oids[i]);
free_oids(MAX_OIDS, oids);
git_oid_shorten_free(os);
#undef MAX_OIDS
}
void test_object_raw_short__oid_shortener_too_much_oids(void) {
void test_object_raw_short__oid_shortener_too_much_oids(void)
{
/* The magic number of oids at which an oid_shortener will fail.
* This was experimentally established. */
#define MAX_OIDS 24556
git_oid_shorten *os;
char number_buffer[16];
git_oid oid;
size_t i;
int min_len = 0;
char **oids;
os = git_oid_shorten_new(0);
cl_assert(os != NULL);
for (i = 0; i < MAX_OIDS; ++i) {
char *oid_text;
p_snprintf(number_buffer, 16, "%u", (unsigned int)i);
git_hash_buf(&oid, number_buffer, strlen(number_buffer));
oid_text = git__malloc(GIT_OID_HEXSZ + 1);
git_oid_fmt(oid_text, &oid);
oid_text[GIT_OID_HEXSZ] = 0;
min_len = git_oid_shorten_add(os, oid_text);
/* All but the last oid should give a non-negative min_len. At the
* last oid, git_oid_shorten_add should fail, returning a negative
* value */
if (i < MAX_OIDS - 1)
cl_assert(min_len >= 0);
else
cl_assert(min_len < 0);
}
cl_assert(insert_sequential_oids(&oids, os, MAX_OIDS, MAX_OIDS - 1) < 0);
free_oids(MAX_OIDS, oids);
git_oid_shorten_free(os);
#undef MAX_OIDS
}