X-Git-Url: http://git.ozlabs.org/?a=blobdiff_plain;f=ccan%2Ftdb2%2Ftest%2Frun-02-expand.c;fp=ccan%2Ftdb2%2Ftest%2Frun-02-expand.c;h=b303f5b23b3e0c5871aa41ccccd133300dffd690;hb=1a24a8708494668c07e5c02284bfc2ef3b09603b;hp=0000000000000000000000000000000000000000;hpb=95458bafc9dc99ac8fcd68aa8f48a9fc564e6a31;p=ccan

diff --git a/ccan/tdb2/test/run-02-expand.c b/ccan/tdb2/test/run-02-expand.c
new file mode 100644
index 00000000..b303f5b2
--- /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();
+}