Replace ndnsType with NdnsContentType

Change-Id: I74afe92d31e78d80404816113063d7f996d666c5
diff --git a/tests/unit/database-test-data.hpp b/tests/unit/database-test-data.hpp
index 26e092f..82410fe 100644
--- a/tests/unit/database-test-data.hpp
+++ b/tests/unit/database-test-data.hpp
@@ -46,7 +46,7 @@
   void
   addRrset(Zone& zone, const Name& label, const name::Component& type,
            const time::seconds& ttl, const name::Component& version,
-           const name::Component& qType, NdnsType ndnsType, const std::string& msg);
+           const name::Component& qType, NdnsContentType contentType, const std::string& msg);
 public:
   class PreviousStateCleaner
   {