tdb2: feature support.

[ccan] / ccan / tdb2 / test / run-features.c

diff --git a/ccan/tdb2/test/run-features.c b/ccan/tdb2/test/run-features.c
new file mode 100644 (file)
index 0000000..a09ddb9
--- /dev/null
+++ b/ccan/tdb2/test/run-features.c
@@ -0,0 +1,71 @@
+#include <ccan/tdb2/tdb.c>
+#include <ccan/tdb2/free.c>
+#include <ccan/tdb2/lock.c>
+#include <ccan/tdb2/io.c>
+#include <ccan/tdb2/hash.c>
+#include <ccan/tdb2/check.c>
+#include <ccan/tdb2/summary.c>
+#include <ccan/tdb2/transaction.c>
+#include <ccan/tap/tap.h>
+#include "logging.h"
+
+int main(int argc, char *argv[])
+{
+       unsigned int i, j;
+       struct tdb_context *tdb;
+       int flags[] = { TDB_DEFAULT, TDB_NOMMAP,
+                       TDB_CONVERT, TDB_NOMMAP|TDB_CONVERT };
+       struct tdb_data key = { (unsigned char *)&j, sizeof(j) };
+       struct tdb_data data = { (unsigned char *)&j, sizeof(j) };
+
+       plan_tests(sizeof(flags) / sizeof(flags[0]) * 8 + 1);
+       for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
+               uint64_t features;
+               tdb = tdb_open("run-features.tdb", flags[i],
+                              O_RDWR|O_CREAT|O_TRUNC, 0600, &tap_log_attr);
+               ok1(tdb);
+               if (!tdb)
+                       continue;
+
+               /* Put some stuff in there. */
+               for (j = 0; j < 100; j++) {
+                       if (tdb_store(tdb, key, data, TDB_REPLACE) != 0)
+                               fail("Storing in tdb");
+               }
+
+               /* Mess with features fields in hdr. */
+               features = (~TDB_FEATURE_MASK ^ 1);
+               ok1(tdb_write_convert(tdb, offsetof(struct tdb_header,
+                                                   features_used), 
+                                     &features, sizeof(features)) == 0);
+               ok1(tdb_write_convert(tdb, offsetof(struct tdb_header,
+                                                   features_offered), 
+                                     &features, sizeof(features)) == 0);
+               tdb_close(tdb);
+
+               tdb = tdb_open("run-features.tdb", flags[i], O_RDWR, 0,
+                              &tap_log_attr);
+               ok1(tdb);
+               if (!tdb)
+                       continue;
+
+               /* Should not have changed features offered. */
+               ok1(tdb_read_convert(tdb, offsetof(struct tdb_header,
+                                                  features_offered), 
+                                    &features, sizeof(features)) == 0);
+               ok1(features == (~TDB_FEATURE_MASK ^ 1));
+
+               /* Should have cleared unknown bits in features_used. */
+               ok1(tdb_read_convert(tdb, offsetof(struct tdb_header,
+                                                  features_used), 
+                                    &features, sizeof(features)) == 0);
+               ok1(features == (1 & TDB_FEATURE_MASK));
+
+               tdb_close(tdb);
+       }
+
+       ok1(tap_log_messages == 0);
+       return exit_status();
+}
+
+