diff --git a/tests/daemon/rib-io-fixture.cpp b/tests/daemon/rib-io-fixture.cpp
new file mode 100644
index 0000000..251d6e9
--- /dev/null
+++ b/tests/daemon/rib-io-fixture.cpp
@@ -0,0 +1,148 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2014-2019,  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 NFD (Named Data Networking Forwarding Daemon).
+ * See AUTHORS.md for complete list of NFD authors and contributors.
+ *
+ * NFD 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.
+ *
+ * NFD 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
+ * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "rib-io-fixture.hpp"
+#include "daemon/global.hpp"
+
+#include <boost/exception/diagnostic_information.hpp>
+
+namespace nfd {
+namespace tests {
+
+RibIoFixture::RibIoFixture()
+{
+  std::mutex m;
+  std::condition_variable cv;
+
+  g_mainIo = &getGlobalIoService();
+  setMainIoService(g_mainIo);
+
+  g_ribThread = std::thread([&] {
+    {
+      std::lock_guard<std::mutex> lock(m);
+      g_ribIo = &getGlobalIoService();
+      setRibIoService(g_ribIo);
+      BOOST_ASSERT(&g_io != g_ribIo);
+      BOOST_ASSERT(g_ribIo == &getRibIoService());
+    }
+    cv.notify_all();
+
+    try {
+      while (true) {
+        {
+          std::unique_lock<std::mutex> lock(m_ribPollMutex);
+          m_ribPollStartCv.wait(lock, [this] { return m_shouldStopRibIo || m_shouldPollRibIo; });
+          if (m_shouldStopRibIo) {
+            break;
+          }
+          BOOST_ASSERT(m_shouldPollRibIo);
+        }
+
+        if (g_ribIo->stopped()) {
+          g_ribIo->reset();
+        }
+        while (g_ribIo->poll() > 0)
+          ;
+
+        {
+          std::lock_guard<std::mutex> lock(m_ribPollMutex);
+          m_shouldPollRibIo = false;
+        }
+        m_ribPollEndCv.notify_all();
+      }
+    }
+    catch (...) {
+      BOOST_WARN_MESSAGE(false, boost::current_exception_diagnostic_information());
+      NDN_THROW_NESTED(std::runtime_error("Fatal exception in RIB thread"));
+    }
+  });
+
+  {
+    std::unique_lock<std::mutex> lock(m);
+    cv.wait(lock, [this] { return g_ribIo != nullptr; });
+  }
+}
+
+RibIoFixture::~RibIoFixture()
+{
+  {
+    std::lock_guard<std::mutex> lock(m_ribPollMutex);
+    m_shouldStopRibIo = true;
+  }
+  m_ribPollStartCv.notify_all();
+  g_ribThread.join();
+}
+
+void
+RibIoFixture::poll()
+{
+  BOOST_ASSERT(&getGlobalIoService() == &g_io);
+
+  size_t nHandlersRun = 0;
+  do {
+    {
+      std::lock_guard<std::mutex> lock(m_ribPollMutex);
+      m_shouldPollRibIo = true;
+    }
+    m_ribPollStartCv.notify_all();
+
+    if (g_io.stopped()) {
+      g_io.reset();
+    }
+
+    nHandlersRun = g_io.poll();
+
+    {
+      std::unique_lock<std::mutex> lock(m_ribPollMutex);
+      m_ribPollEndCv.wait(lock, [this] { return !m_shouldPollRibIo; });
+    }
+  } while (nHandlersRun > 0);
+}
+
+void
+RibIoTimeFixture::advanceClocks(time::nanoseconds tick, time::nanoseconds total)
+{
+  BOOST_ASSERT(tick > time::nanoseconds::zero());
+  BOOST_ASSERT(total >= time::nanoseconds::zero());
+
+  time::nanoseconds remaining = total;
+  while (remaining > time::nanoseconds::zero()) {
+    if (remaining >= tick) {
+      steadyClock->advance(tick);
+      systemClock->advance(tick);
+      remaining -= tick;
+    }
+    else {
+      steadyClock->advance(remaining);
+      systemClock->advance(remaining);
+      remaining = time::nanoseconds::zero();
+    }
+
+    poll();
+  }
+}
+
+} // namespace tests
+} // namespace nfd