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#include <ccan/bdelta/bdelta.h>
#include <ccan/bdelta/bdelta.c>
#include <ccan/tap/tap.h>
static int test_trivial(const char *old, const char *new_)
{
void *patch;
size_t patch_size;
BDELTAcode rc;
void *new2;
size_t new2_size;
rc = bdelta_diff(old, strlen(old), new_, strlen(new_), &patch, &patch_size);
if (rc != BDELTA_OK) {
bdelta_perror("bdelta_diff", rc);
return 0;
}
if (patch_size > strlen(new_) + 1) {
fprintf(stderr, "bdelta_diff produced a patch larger than a simple literal emitting the new string.\n");
return 0;
}
rc = bdelta_patch(old, strlen(old), patch, patch_size, &new2, &new2_size);
if (rc != BDELTA_OK) {
bdelta_perror("bdelta_patch", rc);
return 0;
}
if (new2_size != strlen(new_) || strcmp(new2, new_) != 0) {
fprintf(stderr, "patch(old, diff(old, new)) != new\n");
return 0;
}
/* Make sure bdelta_diff properly discards unwanted return values. */
rc = bdelta_diff(old, strlen(old), new_, strlen(new_), NULL, NULL);
if (rc != BDELTA_OK) {
bdelta_perror("bdelta_diff (second time)", rc);
return 0;
}
free(new2);
free(patch);
return 1;
}
int main(void)
{
plan_tests(13);
ok1(test_trivial("abcabba", "cbabac"));
ok1(test_trivial("aaabbbcdaabcc", "aaabbcdaabeca"));
ok1(test_trivial("aaaaaaaa", "bbbbbbbb"));
ok1(test_trivial("aaaaaaaa", ""));
ok1(test_trivial("", "bbbbbbbb"));
ok1(test_trivial("", ""));
ok1(test_trivial("aaaaaaaa", "aaaaaaaabbbbbbbb"));
ok1(test_trivial("aaaaaaaa", "bbbbbbbbaaaaaaaa"));
ok1(test_trivial("aaaaaaaabbbbbbbb", "aaaaaaaa"));
ok1(test_trivial("aaaaaaaabbbbbbbb", "bbbbbbbb"));
ok1(test_trivial("aaaaaaaabbbbbbbb", "bbbbbbbb"));
ok1(test_trivial("abababababababab", "babababababababa"));
ok1(test_trivial("aababcabcdabcde", "aababcabcdabcde"));
return exit_status();
}
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