tests: use DummyClientFace::linkTo() instead of DummyForwarder

Change-Id: Ied69eeb1b98fd2bdf3672db21bbea7a4a559382b
diff --git a/tests/dummy-forwarder.cpp b/tests/dummy-forwarder.cpp
deleted file mode 100644
index 61526cb..0000000
--- a/tests/dummy-forwarder.cpp
+++ /dev/null
@@ -1,79 +0,0 @@
-/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
- * Copyright (c) 2014-2017,  Regents of the University of California,
- *                           Arizona Board of Regents,
- *                           Colorado State University,
- *                           University Pierre & Marie Curie, Sorbonne University,
- *                           Washington University in St. Louis,
- *                           Beijing Institute of Technology,
- *                           The University of Memphis.
- *
- * This file is part of NDNS (Named Data Networking Domain Name Service) and is
- * based on the code written as part of NFD (Named Data Networking Daemon).
- * See AUTHORS.md for complete list of NDNS authors and contributors.
- *
- * NDNS is free software: you can redistribute it and/or modify it under the terms
- * of the GNU General Public License as published by the Free Software Foundation,
- * either version 3 of the License, or (at your option) any later version.
- *
- * NDNS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
- * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE.  See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * NDNS, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "dummy-forwarder.hpp"
-
-#include <boost/asio/io_service.hpp>
-
-namespace ndn {
-namespace ndns {
-namespace tests {
-
-DummyForwarder::DummyForwarder(boost::asio::io_service& io, KeyChain& keyChain)
-  : m_io(io)
-  , m_keyChain(keyChain)
-{
-}
-
-Face&
-DummyForwarder::addFace()
-{
-  auto face = std::make_shared<util::DummyClientFace>(m_io, m_keyChain, util::
-                                                      DummyClientFace::Options{true, true});
-  face->onSendInterest.connect([this, face] (const Interest& interest) {
-      for (auto& otherFace : m_faces) {
-        if (&*face == &*otherFace) {
-          continue;
-        }
-        otherFace->receive(interest);
-      }
-    });
-
-  face->onSendData.connect([this, face] (const Data& data) {
-      for (auto& otherFace : m_faces) {
-        if (&*face == &*otherFace) {
-          continue;
-        }
-        otherFace->receive(data);
-      }
-    });
-
-  face->onSendNack.connect([this, face] (const lp::Nack& nack) {
-      for (auto& otherFace : m_faces) {
-        if (&*face == &*otherFace) {
-          continue;
-        }
-        otherFace->receive(nack);
-      }
-    });
-
-  m_faces.push_back(face);
-  return *face;
-}
-
-} // namespace tests
-} // namespace ndns
-} // namespace ndn
diff --git a/tests/dummy-forwarder.hpp b/tests/dummy-forwarder.hpp
deleted file mode 100644
index 481d257..0000000
--- a/tests/dummy-forwarder.hpp
+++ /dev/null
@@ -1,70 +0,0 @@
-/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
- * Copyright (c) 2014-2017,  Regents of the University of California,
- *                           Arizona Board of Regents,
- *                           Colorado State University,
- *                           University Pierre & Marie Curie, Sorbonne University,
- *                           Washington University in St. Louis,
- *                           Beijing Institute of Technology,
- *                           The University of Memphis.
- *
- * This file is part of NDNS (Named Data Networking Domain Name Service) and is
- * based on the code written as part of NFD (Named Data Networking Daemon).
- * See AUTHORS.md for complete list of NDNS authors and contributors.
- *
- * NDNS is free software: you can redistribute it and/or modify it under the terms
- * of the GNU General Public License as published by the Free Software Foundation,
- * either version 3 of the License, or (at your option) any later version.
- *
- * NDNS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
- * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE.  See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * NDNS, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <ndn-cxx/interest.hpp>
-#include <ndn-cxx/data.hpp>
-#include <ndn-cxx/lp/nack.hpp>
-#include <ndn-cxx/util/dummy-client-face.hpp>
-#include <ndn-cxx/security/key-chain.hpp>
-
-#ifndef NDNS_TESTS_TEST_DUMMY_FORWARDER_HPP
-#define NDNS_TESTS_TEST_DUMMY_FORWARDER_HPP
-
-namespace ndn {
-namespace ndns {
-namespace tests {
-
-/**
- * @brief Very basic implementation of the dummy forwarder
- *
- * Interests expressed by any added face, will be forwarded to all other faces.
- * Similarly, any pushed data, will be pushed to all other faces.
- */
-class DummyForwarder
-{
-public:
-  DummyForwarder(boost::asio::io_service& io, KeyChain& keyChain);
-
-  Face&
-  addFace();
-
-  Face&
-  getFace(size_t nFace)
-  {
-    return *m_faces.at(nFace);
-  }
-
-private:
-  boost::asio::io_service& m_io;
-  KeyChain& m_keyChain;
-  std::vector<shared_ptr<util::DummyClientFace>> m_faces;
-};
-
-} // namespace tests
-} // namespace ndns
-} // namespace ndn
-
-#endif // NDNS_TESTS_TEST_DUMMY_FORWARDER_HPP
diff --git a/tests/unit/validator/certificate-fetcher-ndns-app-cert.cpp b/tests/unit/validator/certificate-fetcher-ndns-app-cert.cpp
index 3f236aa..e062702 100644
--- a/tests/unit/validator/certificate-fetcher-ndns-app-cert.cpp
+++ b/tests/unit/validator/certificate-fetcher-ndns-app-cert.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2018, Regents of the University of California.
+ * Copyright (c) 2014-2019, Regents of the University of California.
  *
  * This file is part of NDNS (Named Data Networking Domain Name Service).
  * See AUTHORS.md for complete list of NDNS authors and contributors.
@@ -26,10 +26,8 @@
 #include "mgmt/management-tool.hpp"
 
 #include "test-common.hpp"
-#include "dummy-forwarder.hpp"
 #include "unit/database-test-data.hpp"
 
-#include <ndn-cxx/util/io.hpp>
 #include <ndn-cxx/security/v2/validation-policy-simple-hierarchy.hpp>
 
 namespace ndn {
@@ -38,8 +36,8 @@
 
 BOOST_AUTO_TEST_SUITE(AppCertFetcher)
 
-unique_ptr<security::v2::Validator>
-CreateValidatorAppCert(Face& face)
+static unique_ptr<security::v2::Validator>
+makeValidatorAppCert(Face& face)
 {
   return make_unique<security::v2::Validator>(make_unique<::ndn::security::v2::ValidationPolicySimpleHierarchy>(),
                                               make_unique<CertificateFetcherAppCert>(face));
@@ -49,25 +47,28 @@
 {
 public:
   AppCertFetcherFixture()
-    : m_forwarder(m_io, m_keyChain)
-    , m_face(m_forwarder.addFace())
-    , m_validator(CreateValidatorAppCert(m_face))
+    : m_validatorFace(m_io, m_keyChain, {true, true})
+    , m_validator(makeValidatorAppCert(m_validatorFace))
   {
     // build the data and certificate for this test
     buildAppCertAndData();
 
-    auto validatorOnlyForConstructServer = NdnsValidatorBuilder::create(m_face, 10, 0, TEST_CONFIG_PATH "/" "validator.conf");
-    // initlize all servers
-    auto addServer = [&] (const Name& zoneName) {
-      Face& face = m_forwarder.addFace();
+    auto serverValidator = NdnsValidatorBuilder::create(m_validatorFace, 10, 0,
+                                                        TEST_CONFIG_PATH "/validator.conf");
+    // initialize all servers
+    auto addServer = [this, &serverValidator] (const Name& zoneName) {
+      m_serverFaces.push_back(make_unique<util::DummyClientFace>(m_io, m_keyChain,
+                                                                 util::DummyClientFace::Options{true, true}));
+      m_serverFaces.back()->linkTo(m_validatorFace);
+
       // validator is used only for check update signature
       // no updates tested here, so validator will not be used
       // passing m_validator is only for construct server
       Name certName = CertHelper::getDefaultCertificateNameOfIdentity(m_keyChain,
-                                                           Name(zoneName).append("NDNS"));
-      auto server = make_shared<NameServer>(zoneName, certName, face,
-                                            m_session, m_keyChain, *validatorOnlyForConstructServer);
-      m_servers.push_back(server);
+                                                                      Name(zoneName).append("NDNS"));
+      auto server = make_shared<NameServer>(zoneName, certName, *m_serverFaces.back(),
+                                            m_session, m_keyChain, *serverValidator);
+      m_servers.push_back(std::move(server));
     };
     addServer(m_testName);
     addServer(m_netName);
@@ -75,12 +76,6 @@
     advanceClocks(time::milliseconds(10), 1);
   }
 
-  ~AppCertFetcherFixture()
-  {
-    m_face.getIoService().stop();
-    m_face.shutdown();
-  }
-
 private:
   void
   buildAppCertAndData()
@@ -109,14 +104,13 @@
   }
 
 public:
-  DummyForwarder m_forwarder;
-  ndn::Face& m_face;
+  util::DummyClientFace m_validatorFace;
   unique_ptr<security::v2::Validator> m_validator;
+  std::vector<unique_ptr<util::DummyClientFace>> m_serverFaces;
   std::vector<shared_ptr<ndns::NameServer>> m_servers;
   Data m_appCertSignedData;
 };
 
-
 BOOST_FIXTURE_TEST_CASE(Basic, AppCertFetcherFixture)
 {
   bool hasValidated = false;
diff --git a/tests/unit/validator/validator.cpp b/tests/unit/validator/validator.cpp
index 21f6d27..c9ac644 100644
--- a/tests/unit/validator/validator.cpp
+++ b/tests/unit/validator/validator.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2018, Regents of the University of California.
+ * Copyright (c) 2014-2019, Regents of the University of California.
  *
  * This file is part of NDNS (Named Data Networking Domain Name Service).
  * See AUTHORS.md for complete list of NDNS authors and contributors.
@@ -23,11 +23,8 @@
 #include "daemon/name-server.hpp"
 
 #include "test-common.hpp"
-#include "dummy-forwarder.hpp"
 #include "unit/database-test-data.hpp"
 
-#include <ndn-cxx/util/io.hpp>
-
 namespace ndn {
 namespace ndns {
 namespace tests {
@@ -38,50 +35,47 @@
 {
 public:
   ValidatorTestFixture()
-    : m_forwarder(m_io, m_keyChain)
-    , m_face(m_forwarder.addFace())
-    , m_validator(NdnsValidatorBuilder::create(m_face, 500, 0, TEST_CONFIG_PATH "/" "validator.conf"))
+    : m_validatorFace(m_io, m_keyChain, {true, true})
+    , m_validator(NdnsValidatorBuilder::create(m_validatorFace, 500, 0,
+                                               TEST_CONFIG_PATH "/validator.conf"))
   {
     // generate a random cert
     // check how does name-server test do
-    // initlize all servers
-    auto addServer = [&] (const Name& zoneName) {
-      Face& face = m_forwarder.addFace();
+    // initialize all servers
+    auto addServer = [this] (const Name& zoneName) {
+      m_serverFaces.push_back(make_unique<util::DummyClientFace>(m_io, m_keyChain,
+                                                                 util::DummyClientFace::Options{true, true}));
+      m_serverFaces.back()->linkTo(m_validatorFace);
+
       // validator is used only for check update signature
       // no updates tested here, so validator will not be used
       // passing m_validator is only for construct server
       Name certName = CertHelper::getDefaultCertificateNameOfIdentity(m_keyChain,
                                                                       Name(zoneName).append("NDNS"));
-      auto server = make_shared<NameServer>(zoneName, certName, face,
+      auto server = make_shared<NameServer>(zoneName, certName, *m_serverFaces.back(),
                                             m_session, m_keyChain, *m_validator);
-      m_servers.push_back(server);
+      m_servers.push_back(std::move(server));
     };
     addServer(m_testName);
     addServer(m_netName);
     addServer(m_ndnsimName);
+
     m_ndnsimCert = CertHelper::getDefaultCertificateNameOfIdentity(m_keyChain,
-                                                        Name(m_ndnsimName).append("NDNS"));
+                                                                   Name(m_ndnsimName).append("NDNS"));
     m_randomCert = m_keyChain.createIdentity("/random/identity").getDefaultKey()
-    .getDefaultCertificate().getName();
+                   .getDefaultCertificate().getName();
     advanceClocks(time::milliseconds(10), 1);
   }
 
-  ~ValidatorTestFixture()
-  {
-    m_face.getIoService().stop();
-    m_face.shutdown();
-  }
-
 public:
-  DummyForwarder m_forwarder;
-  ndn::Face& m_face;
+  util::DummyClientFace m_validatorFace;
   unique_ptr<security::v2::Validator> m_validator;
+  std::vector<unique_ptr<util::DummyClientFace>> m_serverFaces;
   std::vector<shared_ptr<ndns::NameServer>> m_servers;
   Name m_ndnsimCert;
   Name m_randomCert;
 };
 
-
 BOOST_FIXTURE_TEST_CASE(Basic, ValidatorTestFixture)
 {
   SignatureInfo info;