tdb2: use immobile free buckets, rename tests to show some ordering.

[ccan] / ccan / tdb2 / test / run-02-expand.c

diff --git a/ccan/tdb2/test/run-02-expand.c b/ccan/tdb2/test/run-02-expand.c
new file mode 100644 (file)
index 0000000..b303f5b
--- /dev/null
+++ b/ccan/tdb2/test/run-02-expand.c
@@ -0,0 +1,62 @@
+#include <ccan/tdb2/tdb.c>
+#include <ccan/tdb2/free.c>
+#include <ccan/tdb2/lock.c>
+#include <ccan/tdb2/io.c>
+#include <ccan/tdb2/check.c>
+#include <ccan/tap/tap.h>
+#include "logging.h"
+
+int main(int argc, char *argv[])
+{
+       unsigned int i;
+       uint64_t val;
+       struct tdb_context *tdb;
+       int flags[] = { TDB_INTERNAL, TDB_DEFAULT, TDB_NOMMAP,
+                       TDB_INTERNAL|TDB_CONVERT, TDB_CONVERT,
+                       TDB_NOMMAP|TDB_CONVERT };
+
+       plan_tests(sizeof(flags) / sizeof(flags[0]) * 18 + 1);
+
+       for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
+               tdb = tdb_open("run-expand.tdb", flags[i],
+                              O_RDWR|O_CREAT|O_TRUNC, 0600, &tap_log_attr);
+               ok1(tdb);
+               if (!tdb)
+                       continue;
+
+               /* First expand. Should add a zone, doubling file size.. */
+               val = tdb->map_size - 1 - sizeof(struct tdb_header);
+               ok1(tdb_expand(tdb, 1, 1, false) == 0);
+               ok1(tdb->map_size == 2 * val + 1 + sizeof(struct tdb_header));
+               ok1(tdb_check(tdb, NULL, NULL) == 0);
+
+               /* Second expand, add another zone of same size. */
+               ok1(tdb_expand(tdb, 1, 1, false) == 0);
+               ok1(tdb->map_size == 3 * val + 1 + sizeof(struct tdb_header));
+               ok1(tdb_check(tdb, NULL, NULL) == 0);
+
+               /* Large expand, but can only add 4th zone of same size. */
+               ok1(tdb_expand(tdb, 0, 4*val, false) == 0);
+               ok1(tdb->map_size == 4 * val + 1 + sizeof(struct tdb_header));
+               ok1(tdb_check(tdb, NULL, NULL) == 0);
+
+               /* Large expand now will double file. */
+               ok1(tdb_expand(tdb, 0, 4*val, false) == 0);
+               ok1(tdb->map_size == 8 * val + 1 + sizeof(struct tdb_header));
+               ok1(tdb_check(tdb, NULL, NULL) == 0);
+
+               /* And again? */
+               ok1(tdb_expand(tdb, 0, 4*val, false) == 0);
+               ok1(tdb->map_size == 16 * val + 1 + sizeof(struct tdb_header));
+               ok1(tdb_check(tdb, NULL, NULL) == 0);
+
+               /* Below comfort level, will add a single 8*val zone. */
+               ok1(tdb_expand(tdb, 0, ((8*val) >> TDB_COMFORT_FACTOR_BITS)
+                              - sizeof(struct tdb_used_record), false) == 0);
+               ok1(tdb->map_size == 24 * val + 1 + sizeof(struct tdb_header));
+               tdb_close(tdb);
+       }
+
+       ok1(tap_log_messages == 0);
+       return exit_status();
+}