tests: refactor common test infrastructure and fixtures
Change-Id: I597c11130eefa2cc2846ee6655c85dc04f2f22ef
diff --git a/tests/unit/clock-fixture.hpp b/tests/unit/clock-fixture.hpp
new file mode 100644
index 0000000..68dabbf
--- /dev/null
+++ b/tests/unit/clock-fixture.hpp
@@ -0,0 +1,85 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2013-2020 Regents of the University of California.
+ *
+ * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
+ *
+ * ndn-cxx library is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * ndn-cxx library 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 Lesser General Public License for more details.
+ *
+ * You should have received copies of the GNU General Public License and GNU Lesser
+ * General Public License along with ndn-cxx, e.g., in COPYING.md file. If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
+ */
+
+#ifndef NDN_CXX_TESTS_UNIT_CLOCK_FIXTURE_HPP
+#define NDN_CXX_TESTS_UNIT_CLOCK_FIXTURE_HPP
+
+#include "ndn-cxx/util/time-unit-test-clock.hpp"
+
+namespace ndn {
+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.
+ * afterTick() is called after each tick.
+ *
+ * Exceptions thrown during I/O events are propagated to the caller.
+ * Clock advancement will stop in the event 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.
+ * afterTick() is called after each tick.
+ *
+ * Exceptions thrown during I/O events are propagated to the caller.
+ * Clock advancement will stop in the event of an exception.
+ */
+ void
+ advanceClocks(time::nanoseconds tick, time::nanoseconds total);
+
+protected:
+ ClockFixture();
+
+private:
+ /** \brief Called by advanceClocks() after each clock advancement (tick).
+ *
+ * The base class implementation is a no-op.
+ */
+ virtual void
+ afterTick()
+ {
+ }
+
+protected:
+ shared_ptr<time::UnitTestSteadyClock> m_steadyClock;
+ shared_ptr<time::UnitTestSystemClock> m_systemClock;
+};
+
+} // namespace tests
+} // namespace ndn
+
+#endif // NDN_CXX_TESTS_UNIT_CLOCK_FIXTURE_HPP