#include "clar_libgit2.h"
#include "odb.h"
void test_object_raw_convert__succeed_on_oid_to_string_conversion(void)
{
const char *exp = "16a0123456789abcdef4b775213c23a8bd74f5e0";
git_oid in;
char out[GIT_OID_HEXSZ + 1];
char *str;
int i;
cl_git_pass(git_oid_fromstr(&in, exp));
/* NULL buffer pointer, returns static empty string */
str = git_oid_tostr(NULL, sizeof(out), &in);
cl_assert(str && *str == '\0' && str != out);
/* zero buffer size, returns static empty string */
str = git_oid_tostr(out, 0, &in);
cl_assert(str && *str == '\0' && str != out);
/* NULL oid pointer, sets existing buffer to empty string */
str = git_oid_tostr(out, sizeof(out), NULL);
cl_assert(str && *str == '\0' && str == out);
/* n == 1, returns out as an empty string */
str = git_oid_tostr(out, 1, &in);
cl_assert(str && *str == '\0' && str == out);
for (i = 1; i < GIT_OID_HEXSZ; i++) {
out[i+1] = 'Z';
str = git_oid_tostr(out, i+1, &in);
/* returns out containing c-string */
cl_assert(str && str == out);
/* must be '\0' terminated */
cl_assert(*(str+i) == '\0');
/* must not touch bytes past end of string */
cl_assert(*(str+(i+1)) == 'Z');
/* i == n-1 charaters of string */
cl_git_pass(strncmp(exp, out, i));
}
/* returns out as hex formatted c-string */
str = git_oid_tostr(out, sizeof(out), &in);
cl_assert(str && str == out && *(str+GIT_OID_HEXSZ) == '\0');
cl_assert_equal_s(exp, out);
}
void test_object_raw_convert__succeed_on_oid_to_string_conversion_big(void)
{
const char *exp = "16a0123456789abcdef4b775213c23a8bd74f5e0";
git_oid in;
char big[GIT_OID_HEXSZ + 1 + 3]; /* note + 4 => big buffer */
char *str;
cl_git_pass(git_oid_fromstr(&in, exp));
/* place some tail material */
big[GIT_OID_HEXSZ+0] = 'W'; /* should be '\0' afterwards */
big[GIT_OID_HEXSZ+1] = 'X'; /* should remain untouched */
big[GIT_OID_HEXSZ+2] = 'Y'; /* ditto */
big[GIT_OID_HEXSZ+3] = 'Z'; /* ditto */
/* returns big as hex formatted c-string */
str = git_oid_tostr(big, sizeof(big), &in);
cl_assert(str && str == big && *(str+GIT_OID_HEXSZ) == '\0');
cl_assert_equal_s(exp, big);
/* check tail material is untouched */
cl_assert(str && str == big && *(str+GIT_OID_HEXSZ+1) == 'X');
cl_assert(str && str == big && *(str+GIT_OID_HEXSZ+2) == 'Y');
cl_assert(str && str == big && *(str+GIT_OID_HEXSZ+3) == 'Z');
}
static void check_partial_oid(
char *buffer, size_t count, const git_oid *oid, const char *expected)
{
git_oid_nfmt(buffer, count, oid);
buffer[count] = '\0';
cl_assert_equal_s(expected, buffer);
}
void test_object_raw_convert__convert_oid_partially(void)
{
const char *exp = "16a0123456789abcdef4b775213c23a8bd74f5e0";
git_oid in;
char big[GIT_OID_HEXSZ + 1 + 3]; /* note + 4 => big buffer */
cl_git_pass(git_oid_fromstr(&in, exp));
git_oid_nfmt(big, sizeof(big), &in);
cl_assert_equal_s(exp, big);
git_oid_nfmt(big, GIT_OID_HEXSZ + 1, &in);
cl_assert_equal_s(exp, big);
check_partial_oid(big, 1, &in, "1");
check_partial_oid(big, 2, &in, "16");
check_partial_oid(big, 3, &in, "16a");
check_partial_oid(big, 4, &in, "16a0");
check_partial_oid(big, 5, &in, "16a01");
check_partial_oid(big, GIT_OID_HEXSZ, &in, exp);
check_partial_oid(
big, GIT_OID_HEXSZ - 1, &in, "16a0123456789abcdef4b775213c23a8bd74f5e");
check_partial_oid(
big, GIT_OID_HEXSZ - 2, &in, "16a0123456789abcdef4b775213c23a8bd74f5");
check_partial_oid(
big, GIT_OID_HEXSZ - 3, &in, "16a0123456789abcdef4b775213c23a8bd74f");
}
