Change namespace of DummyClientFace, Signal, Segmenter

refs #3940

Change-Id: I67ca0ecb8c916aab411a2f90454e0d25925978cd
diff --git a/tests/ping/client/ping.t.cpp b/tests/ping/client/ping.t.cpp
index a008271..b414fa0 100644
--- a/tests/ping/client/ping.t.cpp
+++ b/tests/ping/client/ping.t.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2022,  Arizona Board of Regents.
+ * Copyright (c) 2014-2023,  Arizona Board of Regents.
  *
  * This file is part of ndn-tools (Named Data Networking Essential Tools).
  * See AUTHORS.md for complete list of ndn-tools authors and contributors.
@@ -35,7 +35,7 @@
 
 BOOST_FIXTURE_TEST_CASE(Basic, IoFixture)
 {
-  util::DummyClientFace face(m_io, {true, true});
+  DummyClientFace face(m_io, {true, true});
   Options pingOptions;
   pingOptions.prefix = "/test-prefix";
   pingOptions.shouldAllowStaleData = false;
diff --git a/tests/ping/client/statistics-collector.t.cpp b/tests/ping/client/statistics-collector.t.cpp
index 9d5423a..5d3e0d3 100644
--- a/tests/ping/client/statistics-collector.t.cpp
+++ b/tests/ping/client/statistics-collector.t.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2022,  Arizona Board of Regents.
+ * Copyright (c) 2014-2023,  Arizona Board of Regents.
  *
  * This file is part of ndn-tools (Named Data Networking Essential Tools).
  * See AUTHORS.md for complete list of ndn-tools authors and contributors.
@@ -44,7 +44,7 @@
   }
 
 protected:
-  util::DummyClientFace face;
+  DummyClientFace face;
   Options pingOptions{makeOptions()};
   Ping pingProgram{face, pingOptions};
   StatisticsCollector sc{pingProgram, pingOptions};
diff --git a/tests/ping/integrated.t.cpp b/tests/ping/integrated.t.cpp
index 0b95ba3..6994beb 100644
--- a/tests/ping/integrated.t.cpp
+++ b/tests/ping/integrated.t.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2015-2022,  Arizona Board of Regents.
+ * Copyright (c) 2015-2023,  Arizona Board of Regents.
  *
  * This file is part of ndn-tools (Named Data Networking Essential Tools).
  * See AUTHORS.md for complete list of ndn-tools authors and contributors.
@@ -51,7 +51,7 @@
 
   template<typename Packet>
   void
-  receive(util::DummyClientFace& face, const Packet& pkt)
+  receive(DummyClientFace& face, const Packet& pkt)
   {
     m_io.post([=, &face] {
       if (!wantLoss) {
@@ -69,8 +69,8 @@
   }
 
 protected:
-  util::DummyClientFace serverFace{m_io, m_keyChain, {false, true}};
-  util::DummyClientFace clientFace{m_io, m_keyChain, {false, true}};
+  DummyClientFace serverFace{m_io, m_keyChain, {false, true}};
+  DummyClientFace clientFace{m_io, m_keyChain, {false, true}};
   std::unique_ptr<server::PingServer> server;
   std::unique_ptr<client::Ping> client;
   bool wantLoss = false;
diff --git a/tests/ping/server/ping-server.t.cpp b/tests/ping/server/ping-server.t.cpp
index b5c9948..05a7d84 100644
--- a/tests/ping/server/ping-server.t.cpp
+++ b/tests/ping/server/ping-server.t.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2022,  Arizona Board of Regents.
+ * Copyright (c) 2014-2023,  Arizona Board of Regents.
  *
  * This file is part of ndn-tools (Named Data Networking Essential Tools).
  * See AUTHORS.md for complete list of ndn-tools authors and contributors.
@@ -59,7 +59,7 @@
   }
 
 protected:
-  util::DummyClientFace face{m_io, m_keyChain, {false, true}};
+  DummyClientFace face{m_io, m_keyChain, {false, true}};
   Options pingOptions{makeOptions()};
   PingServer pingServer{face, m_keyChain, pingOptions};
 };