encoders as namespaces

Change-Id: I992fae12d89e4e156015bb5660d02932b32c57b6
diff --git a/tests/unit-tests/ca-module.t.cpp b/tests/unit-tests/ca-module.t.cpp
index 64dcfa4..15c7532 100644
--- a/tests/unit-tests/ca-module.t.cpp
+++ b/tests/unit-tests/ca-module.t.cpp
@@ -83,7 +83,7 @@
       BOOST_CHECK(security::verifySignature(response, cert));
       auto contentBlock = response.getContent();
       contentBlock.parse();
-      auto caItem = InfoEncoder::decodeDataContent(contentBlock);
+      auto caItem = infoEncoder::decodeDataContent(contentBlock);
       BOOST_CHECK_EQUAL(caItem.m_caPrefix, "/ndn");
       BOOST_CHECK_EQUAL(caItem.m_probeParameterKeys.size(), 1);
       BOOST_CHECK_EQUAL(caItem.m_probeParameterKeys.front(), "full name");