bdelta: new module for binary diff/patch

[ccan] / ccan / bdelta / test / run-trivial.c

diff --git a/ccan/bdelta/test/run-trivial.c b/ccan/bdelta/test/run-trivial.c
new file mode 100644 (file)
index 0000000..8dd06c1
--- /dev/null
+++ b/ccan/bdelta/test/run-trivial.c
@@ -0,0 +1,67 @@
+#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();
+}