re-organize files and remove DbMgr

Change-Id: I6667dad558994f1ebcdfb54ab0ec0ed61e2cccb6
diff --git a/tests/unit/ndns-enum.cpp b/tests/unit/ndns-enum.cpp
index c396b6b..7559448 100644
--- a/tests/unit/ndns-enum.cpp
+++ b/tests/unit/ndns-enum.cpp
@@ -31,7 +31,7 @@
   BOOST_CHECK_EQUAL(toString(NDNS_RESP), "NDNS-Resp");
   BOOST_CHECK_EQUAL(toString(NDNS_AUTH), "NDNS-Auth");
   BOOST_CHECK_EQUAL(toString(NDNS_NACK), "NDNS-Nack");
-  BOOST_CHECK_EQUAL(toString(NDNS_NULL), "NDNS-Null");
+  BOOST_CHECK_EQUAL(toString(NDNS_RAW), "NDNS-Raw");
 
   BOOST_CHECK_EQUAL(toString(static_cast<NdnsType>(254)), "UNKNOWN");
   BOOST_CHECK_EQUAL(toString(static_cast<NdnsType>(255)), "UNKNOWN");