Add initial unit tests

Signed-off-by: Lei YU <yulei.sh@bytedance.com>
Change-Id: Id4850e52073ea6780a978c6cd5a5c439aa8ed846
diff --git a/test/mocked_sdbus.hpp b/test/mocked_sdbus.hpp
new file mode 100644
index 0000000..5d4fcd5
--- /dev/null
+++ b/test/mocked_sdbus.hpp
@@ -0,0 +1,3 @@
+#pragma once
+
+void clearMockedBus();