face: Implementing Face::getUri() method

Change-Id: I9a9f774b95784e5b7ec75472f1cc6cf64c4e5d7b
Refs: #1319
diff --git a/tests/face/dummy-face.hpp b/tests/face/dummy-face.hpp
index 969053a..e64a162 100644
--- a/tests/face/dummy-face.hpp
+++ b/tests/face/dummy-face.hpp
@@ -20,6 +20,11 @@
 class DummyFaceImpl : public FaceBase
 {
 public:
+  DummyFaceImpl()
+    : FaceBase(FaceUri("dummy://"))
+  {
+  }
+
   virtual void
   sendInterest(const Interest& interest)
   {