encoding: replace the route origin selflearning with prefixann

refs: #4280

Change-Id: I9db6b92f681650c21e82251f17f03f4ae2834b24
diff --git a/tests/unit-tests/encoding/nfd-constants.t.cpp b/tests/unit-tests/encoding/nfd-constants.t.cpp
index c2149a1..af9997b 100644
--- a/tests/unit-tests/encoding/nfd-constants.t.cpp
+++ b/tests/unit-tests/encoding/nfd-constants.t.cpp
@@ -96,7 +96,7 @@
   expectSuccess("Client", ROUTE_ORIGIN_CLIENT);
   expectSuccess("AutoConf", ROUTE_ORIGIN_AUTOCONF);
   expectSuccess("NLSR", ROUTE_ORIGIN_NLSR);
-  expectSuccess("SelfLearning", ROUTE_ORIGIN_SELFLEARNING);
+  expectSuccess("PrefixAnn", ROUTE_ORIGIN_PREFIXANN);
   expectSuccess("static", ROUTE_ORIGIN_STATIC);
   expectSuccess("27", static_cast<RouteOrigin>(27));
 
@@ -119,7 +119,7 @@
   BOOST_CHECK_EQUAL(boost::lexical_cast<std::string>(ROUTE_ORIGIN_CLIENT), "client");
   BOOST_CHECK_EQUAL(boost::lexical_cast<std::string>(ROUTE_ORIGIN_AUTOCONF), "autoconf");
   BOOST_CHECK_EQUAL(boost::lexical_cast<std::string>(ROUTE_ORIGIN_NLSR), "nlsr");
-  BOOST_CHECK_EQUAL(boost::lexical_cast<std::string>(ROUTE_ORIGIN_SELFLEARNING), "selflearning");
+  BOOST_CHECK_EQUAL(boost::lexical_cast<std::string>(ROUTE_ORIGIN_PREFIXANN), "prefixann");
   BOOST_CHECK_EQUAL(boost::lexical_cast<std::string>(ROUTE_ORIGIN_STATIC), "static");
   BOOST_CHECK_EQUAL(boost::lexical_cast<std::string>(static_cast<RouteOrigin>(27)), "27");
 }