tdb: put example hashes into header, so we notice incorrect hash_fn.

[ccan] / ccan / tdb / test / run-oldhash.c

diff --git a/ccan/tdb/test/run-oldhash.c b/ccan/tdb/test/run-oldhash.c
new file mode 100644 (file)
index 0000000..8e5a76f
--- /dev/null
+++ b/ccan/tdb/test/run-oldhash.c
@@ -0,0 +1,56 @@
+#define _XOPEN_SOURCE 500
+#include <ccan/tdb/tdb.h>
+#include <ccan/tdb/io.c>
+#include <ccan/tdb/tdb.c>
+#include <ccan/tdb/lock.c>
+#include <ccan/tdb/freelist.c>
+#include <ccan/tdb/traverse.c>
+#include <ccan/tdb/transaction.c>
+#include <ccan/tdb/error.c>
+#include <ccan/tdb/open.c>
+#include <ccan/tdb/check.c>
+#include <ccan/hash/hash.h>
+#include <ccan/tap/tap.h>
+#include <stdlib.h>
+#include <err.h>
+#include "logging.h"
+
+static unsigned int jenkins_hash(TDB_DATA *key)
+{
+       return hash_stable(key->dptr, key->dsize, 0);
+}
+
+int main(int argc, char *argv[])
+{
+       struct tdb_context *tdb;
+
+       plan_tests(8);
+
+       /* Old format (with zeroes in the hash magic fields) should
+        * open with any hash (since we don't know what hash they used). */
+       tdb = tdb_open_ex("test/old-nohash-le.tdb", 0, 0, O_RDWR, 0,
+                         &taplogctx, NULL);
+       ok1(tdb);
+       ok1(tdb_check(tdb, NULL, NULL) == 0);
+       tdb_close(tdb);
+
+       tdb = tdb_open_ex("test/old-nohash-be.tdb", 0, 0, O_RDWR, 0,
+                         &taplogctx, NULL);
+       ok1(tdb);
+       ok1(tdb_check(tdb, NULL, NULL) == 0);
+       tdb_close(tdb);
+
+       tdb = tdb_open_ex("test/old-nohash-le.tdb", 0, 0, O_RDWR, 0,
+                         &taplogctx, jenkins_hash);
+       ok1(tdb);
+       ok1(tdb_check(tdb, NULL, NULL) == 0);
+       tdb_close(tdb);
+
+       tdb = tdb_open_ex("test/old-nohash-be.tdb", 0, 0, O_RDWR, 0,
+                         &taplogctx, jenkins_hash);
+       ok1(tdb);
+       ok1(tdb_check(tdb, NULL, NULL) == 0);
+       tdb_close(tdb);
+
+       return exit_status();
+}