tests: introduce ClockFixture
Identical to UnitTestTimeFixture, except that it does not derive
from BaseFixture, and thus does not depend on a global io_service.
Refs: #4528
Change-Id: Ia2e6c4835a1e461c73281e103109d5cc85be355e
diff --git a/tests/clock-fixture.hpp b/tests/clock-fixture.hpp
new file mode 100644
index 0000000..5c69334
--- /dev/null
+++ b/tests/clock-fixture.hpp
@@ -0,0 +1,91 @@
+/* -*- 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_CLOCK_FIXTURE_HPP
+#define NFD_TESTS_CLOCK_FIXTURE_HPP
+
+#include "core/common.hpp"
+
+#include <ndn-cxx/util/time-unit-test-clock.hpp>
+
+namespace nfd {
+namespace tests {
+
+/** \brief A test fixture that overrides steady clock and system clock.
+ */
+class ClockFixture
+{
+public:
+ virtual
+ ~ClockFixture();
+
+ /** \brief Advance steady and system clocks.
+ *
+ * Clocks are advanced in increments of \p tick for \p nTicks ticks.
+ * After each tick, global io_service is polled to process pending I/O events.
+ *
+ * Exceptions thrown during I/O events are propagated to the caller.
+ * Clock advancing would stop in case of an exception.
+ */
+ void
+ advanceClocks(time::nanoseconds tick, size_t nTicks = 1)
+ {
+ advanceClocks(tick, tick * nTicks);
+ }
+
+ /** \brief Advance steady and system clocks.
+ *
+ * Clocks are advanced in increments of \p tick for \p total time.
+ * The last increment might be shorter than \p tick.
+ * After each tick, global io_service is polled to process pending I/O events.
+ *
+ * Exceptions thrown during I/O events are propagated to the caller.
+ * Clock advancing would stop in case of an exception.
+ */
+ void
+ advanceClocks(time::nanoseconds tick, time::nanoseconds total);
+
+protected:
+ explicit
+ ClockFixture(boost::asio::io_service& io);
+
+private:
+ /** \brief Called by advanceClocks() after each clock advancement (tick).
+ */
+ virtual void
+ pollAfterClockTick();
+
+protected:
+ shared_ptr<time::UnitTestSteadyClock> m_steadyClock;
+ shared_ptr<time::UnitTestSystemClock> m_systemClock;
+
+private:
+ boost::asio::io_service& m_io;
+};
+
+} // namespace tests
+} // namespace nfd
+
+#endif // NFD_TESTS_CLOCK_FIXTURE_HPP