face: declare face counters

refs #1280

Change-Id: Ia1c50ab2b31d6131728489b3b038dc6f7608266f
diff --git a/tests/face/face.cpp b/tests/face/face.cpp
index 3fb4ea4..5f8ab6e 100644
--- a/tests/face/face.cpp
+++ b/tests/face/face.cpp
@@ -40,6 +40,16 @@
                          LOCAL_CONTROL_HEADER_FEATURE_IN_FACEID), false);
 }
 
+BOOST_AUTO_TEST_CASE(Counters)
+{
+  DummyFace face;
+  const FaceCounters& counters = face.getCounters();
+  BOOST_CHECK_EQUAL(counters.getInInterest() , 0);
+  BOOST_CHECK_EQUAL(counters.getInData()     , 0);
+  BOOST_CHECK_EQUAL(counters.getOutInterest(), 0);
+  BOOST_CHECK_EQUAL(counters.getOutData()    , 0);
+}
+
 BOOST_AUTO_TEST_SUITE_END()
 
 } // namespace nfd