diff --git a/tests/moebius/drd/drd_info_test.cpp b/tests/moebius/drd/drd_info_test.cpp
new file mode 100644
index 0000000..009c362
--- /dev/null
+++ b/tests/moebius/drd/drd_info_test.cpp
@@ -0,0 +1,27 @@
+/** \file drd_info_test.cpp
+ *  \copyright GPLv3
+ *  \details Unitests for drd data structure
+ *  \author jingkaimori
+ *  \date   2024
+ */
+
+#include "moe_doctests.hpp"
+#include "moebius\drd\drd_info.hpp"
+#include "tree_helper.hpp"
+
+using namespace moebius;
+
+using moebius::drd::drd_info;
+
+TEST_CASE ("drd initialize macro") {
+  drd_info test_drd ("test");
+  test_drd->heuristic_init_macro (
+      "test-macro",
+      tree (MACRO, "arg1", "arg2",
+            tree (CONCAT, tree (ARG, "arg1"), " text ", tree (ARG, "arg2"))));
+  tree_label test_macro_label= make_tree_label ("test-macro");
+  CHECK_EQ (test_drd->get_arity_base (test_macro_label), 2);
+  CHECK_EQ (test_drd->get_arity_extra (test_macro_label), 0);
+  CHECK_EQ (test_drd->get_arity_mode (test_macro_label), ARITY_NORMAL);
+  CHECK_EQ (test_drd->get_nr_indices (test_macro_label), 2);
+}
\ No newline at end of file