git.ozlabs.org Git - ccan/blob - ccan/bdelta/test/run-trivial.c

   1 #include <ccan/bdelta/bdelta.h>
   2 #include <ccan/bdelta/bdelta.c>
   3 #include <ccan/tap/tap.h>
   4
   5 static int test_trivial(const char *old, const char *new_)
   6 {
   7         void *patch;
   8         size_t patch_size;
   9         BDELTAcode rc;
  10
  11         void *new2;
  12         size_t new2_size;
  13
  14         rc = bdelta_diff(old, strlen(old), new_, strlen(new_), &patch, &patch_size);
  15         if (rc != BDELTA_OK) {
  16                 bdelta_perror("bdelta_diff", rc);
  17                 return 0;
  18         }
  19
  20         if (patch_size > strlen(new_) + 1) {
  21                 fprintf(stderr, "bdelta_diff produced a patch larger than a simple literal emitting the new string.\n");
  22                 return 0;
  23         }
  24
  25         rc = bdelta_patch(old, strlen(old), patch, patch_size, &new2, &new2_size);
  26         if (rc != BDELTA_OK) {
  27                 bdelta_perror("bdelta_patch", rc);
  28                 return 0;
  29         }
  30
  31         if (new2_size != strlen(new_) || strcmp(new2, new_) != 0) {
  32                 fprintf(stderr, "patch(old, diff(old, new)) != new\n");
  33                 return 0;
  34         }
  35
  36         /* Make sure bdelta_diff properly discards unwanted return values. */
  37         rc = bdelta_diff(old, strlen(old), new_, strlen(new_), NULL, NULL);
  38         if (rc != BDELTA_OK) {
  39                 bdelta_perror("bdelta_diff (second time)", rc);
  40                 return 0;
  41         }
  42
  43         free(new2);
  44         free(patch);
  45         return 1;
  46 }
  47
  48 int main(void)
  49 {
  50         plan_tests(13);
  51
  52         ok1(test_trivial("abcabba", "cbabac"));
  53         ok1(test_trivial("aaabbbcdaabcc", "aaabbcdaabeca"));
  54         ok1(test_trivial("aaaaaaaa", "bbbbbbbb"));
  55         ok1(test_trivial("aaaaaaaa", ""));
  56         ok1(test_trivial("", "bbbbbbbb"));
  57         ok1(test_trivial("", ""));
  58         ok1(test_trivial("aaaaaaaa", "aaaaaaaabbbbbbbb"));
  59         ok1(test_trivial("aaaaaaaa", "bbbbbbbbaaaaaaaa"));
  60         ok1(test_trivial("aaaaaaaabbbbbbbb", "aaaaaaaa"));
  61         ok1(test_trivial("aaaaaaaabbbbbbbb", "bbbbbbbb"));
  62         ok1(test_trivial("aaaaaaaabbbbbbbb", "bbbbbbbb"));
  63         ok1(test_trivial("abababababababab", "babababababababa"));
  64         ok1(test_trivial("aababcabcdabcde", "aababcabcdabcde"));
  65
  66         return exit_status();
  67 }