diff --git a/tests/daemon/global-io-fixture.hpp b/tests/daemon/global-io-fixture.hpp
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+/* -*- 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/>.
+ */
+
+#ifndef NFD_TESTS_DAEMON_GLOBAL_IO_FIXTURE_HPP
+#define NFD_TESTS_DAEMON_GLOBAL_IO_FIXTURE_HPP
+
+#include "tests/clock-fixture.hpp"
+
+namespace nfd {
+namespace tests {
+
+/** \brief A fixture providing proper setup and teardown of the global io_service.
+ *
+ *  Every daemon fixture or test case should inherit from this fixture,
+ *  to have per test case io_service initialization and cleanup.
+ */
+class GlobalIoFixture
+{
+protected:
+  GlobalIoFixture();
+
+  ~GlobalIoFixture();
+
+protected:
+  /** \brief Reference to the global io_service instance.
+   */
+  boost::asio::io_service& g_io;
+};
+
+/** \brief GlobalIoFixture that also overrides steady clock and system clock.
+ */
+class GlobalIoTimeFixture : public GlobalIoFixture, public ClockFixture
+{
+protected:
+  GlobalIoTimeFixture();
+};
+
+} // namespace tests
+} // namespace nfd
+
+#endif // NFD_TESTS_DAEMON_GLOBAL_IO_FIXTURE_HPP