Add initial unit tests

Signed-off-by: Lei YU <yulei.sh@bytedance.com>
Change-Id: Id4850e52073ea6780a978c6cd5a5c439aa8ed846
diff --git a/src/sdbus_wrapper.hpp b/src/sdbus_wrapper.hpp
new file mode 100644
index 0000000..d6273d1
--- /dev/null
+++ b/src/sdbus_wrapper.hpp
@@ -0,0 +1,5 @@
+#pragma once
+
+#include <sdbusplus/bus.hpp>
+
+sdbusplus::bus::bus& getBus();