1 files changed, 71 insertions, 0 deletions
diff --git a/lib/ntdb/test/run-30-exhaust-before-expand.c b/lib/ntdb/test/run-30-exhaust-before-expand.c
new file mode 100644
index 0000000000..b94bc01bff
--- /dev/null
+++ b/lib/ntdb/test/run-30-exhaust-before-expand.c
@@ -0,0 +1,71 @@
+#include "ntdb-source.h"
+#include "tap-interface.h"
+#include "logging.h"
+
+static bool empty_freetable(struct ntdb_context *ntdb)
+{
+	struct ntdb_freetable ftab;
+	unsigned int i;
+
+	/* Now, free table should be completely exhausted in zone 0 */
+	if (ntdb_read_convert(ntdb, ntdb->ftable_off, &ftab, sizeof(ftab)) != 0)
+		abort();
+
+	for (i = 0; i < sizeof(ftab.buckets)/sizeof(ftab.buckets[0]); i++) {
+		if (ftab.buckets[i])
+			return false;
+	}
+	return true;
+}
+
+
+int main(int argc, char *argv[])
+{
+	unsigned int i, j;
+	struct ntdb_context *ntdb;
+	int flags[] = { NTDB_INTERNAL, NTDB_DEFAULT, NTDB_NOMMAP,
+			NTDB_INTERNAL|NTDB_CONVERT, NTDB_CONVERT,
+			NTDB_NOMMAP|NTDB_CONVERT };
+
+	plan_tests(sizeof(flags) / sizeof(flags[0]) * 9 + 1);
+
+	for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
+		NTDB_DATA k;
+		uint64_t size;
+		bool was_empty = false;
+
+		k.dptr = (void *)&j;
+		k.dsize = sizeof(j);
+
+		ntdb = ntdb_open("run-30-exhaust-before-expand.ntdb", flags[i],
+			       O_RDWR|O_CREAT|O_TRUNC, 0600, &tap_log_attr);
+		ok1(ntdb);
+		if (!ntdb)
+			continue;
+
+		ok1(empty_freetable(ntdb));
+		/* Need some hash lock for expand. */
+		ok1(ntdb_lock_hashes(ntdb, 0, 1, F_WRLCK, NTDB_LOCK_WAIT) == 0);
+		/* Create some free space. */
+		ok1(ntdb_expand(ntdb, 1) == 0);
+		ok1(ntdb_unlock_hashes(ntdb, 0, 1, F_WRLCK) == 0);
+		ok1(ntdb_check(ntdb, NULL, NULL) == 0);
+		ok1(!empty_freetable(ntdb));
+
+		size = ntdb->file->map_size;
+		/* Insert minimal-length records until we expand. */
+		for (j = 0; ntdb->file->map_size == size; j++) {
+			was_empty = empty_freetable(ntdb);
+			if (ntdb_store(ntdb, k, k, NTDB_INSERT) != 0)
+				err(1, "Failed to store record %i", j);
+		}
+
+		/* Would have been empty before expansion, but no longer. */
+		ok1(was_empty);
+		ok1(!empty_freetable(ntdb));
+		ntdb_close(ntdb);
+	}
+
+	ok1(tap_log_messages == 0);
+	return exit_status();
+}