1 files changed, 79 insertions, 0 deletions
diff --git a/lib/tdb/test/run-nested-transactions.c b/lib/tdb/test/run-nested-transactions.c
new file mode 100644
index 0000000..864adf2
--- /dev/null
+++ b/lib/tdb/test/run-nested-transactions.c
@@ -0,0 +1,79 @@
+#include "../common/tdb_private.h"
+#include "../common/io.c"
+#include "../common/tdb.c"
+#include "../common/lock.c"
+#include "../common/freelist.c"
+#include "../common/traverse.c"
+#include "../common/transaction.c"
+#include "../common/error.c"
+#include "../common/open.c"
+#include "../common/check.c"
+#include "../common/hash.c"
+#include "../common/mutex.c"
+#include "tap-interface.h"
+#include <stdlib.h>
+#include <stdbool.h>
+#include "logging.h"
+
+int main(int argc, char *argv[])
+{
+	struct tdb_context *tdb;
+	TDB_DATA key, data;
+
+	plan_tests(27);
+	key.dsize = strlen("hi");
+	key.dptr = discard_const_p(uint8_t, "hi");
+
+	tdb = tdb_open_ex("run-nested-transactions.tdb",
+			  1024, TDB_CLEAR_IF_FIRST|TDB_DISALLOW_NESTING,
+			  O_CREAT|O_TRUNC|O_RDWR, 0600, &taplogctx, NULL);
+	ok1(tdb);
+
+	/* Nesting disallowed. */
+	ok1(tdb_transaction_start(tdb) == 0);
+	data.dptr = discard_const_p(uint8_t, "world");
+	data.dsize = strlen("world");
+	ok1(tdb_store(tdb, key, data, TDB_INSERT) == 0);
+	data = tdb_fetch(tdb, key);
+	ok1(data.dsize == strlen("world"));
+	ok1(memcmp(data.dptr, "world", strlen("world")) == 0);
+	free(data.dptr);
+	ok1(tdb_transaction_start(tdb) != 0);
+	ok1(tdb_error(tdb) == TDB_ERR_NESTING);
+
+	data = tdb_fetch(tdb, key);
+	ok1(data.dsize == strlen("world"));
+	ok1(memcmp(data.dptr, "world", strlen("world")) == 0);
+	free(data.dptr);
+	ok1(tdb_transaction_commit(tdb) == 0);
+	data = tdb_fetch(tdb, key);
+	ok1(data.dsize == strlen("world"));
+	ok1(memcmp(data.dptr, "world", strlen("world")) == 0);
+	free(data.dptr);
+	tdb_close(tdb);
+
+	/* Nesting allowed by default */
+	tdb = tdb_open_ex("run-nested-transactions.tdb",
+			  1024, TDB_DEFAULT, O_RDWR, 0, &taplogctx, NULL);
+	ok1(tdb);
+
+	ok1(tdb_transaction_start(tdb) == 0);
+	ok1(tdb_transaction_start(tdb) == 0);
+	ok1(tdb_delete(tdb, key) == 0);
+	ok1(tdb_transaction_commit(tdb) == 0);
+	ok1(!tdb_exists(tdb, key));
+	ok1(tdb_transaction_cancel(tdb) == 0);
+	/* Surprise! Kills inner "committed" transaction. */
+	ok1(tdb_exists(tdb, key));
+
+	ok1(tdb_transaction_start(tdb) == 0);
+	ok1(tdb_transaction_start(tdb) == 0);
+	ok1(tdb_delete(tdb, key) == 0);
+	ok1(tdb_transaction_commit(tdb) == 0);
+	ok1(!tdb_exists(tdb, key));
+	ok1(tdb_transaction_commit(tdb) == 0);
+	ok1(!tdb_exists(tdb, key));
+	tdb_close(tdb);
+
+	return exit_status();
+}