Davide Pesavento
116 lines
3.2 KiB
C++
116 lines
3.2 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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/**
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* Copyright (c) 2014-2015, Regents of the University of California,
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* Arizona Board of Regents,
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* Colorado State University,
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* University Pierre & Marie Curie, Sorbonne University,
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* Washington University in St. Louis,
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* Beijing Institute of Technology,
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* The University of Memphis.
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*
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* This file is part of NFD (Named Data Networking Forwarding Daemon).
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* See AUTHORS.md for complete list of NFD authors and contributors.
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*
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* NFD is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Foundation,
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* either version 3 of the License, or (at your option) any later version.
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*
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* NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* NFD, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef NFD_TESTS_LIMITED_IO_HPP
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#define NFD_TESTS_LIMITED_IO_HPP
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#include "test-common.hpp"
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#include "core/scheduler.hpp"
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#include <exception>
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namespace nfd {
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namespace tests {
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/** \brief provides IO operations limit and/or time limit for unit testing
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*/
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class LimitedIo : noncopyable
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{
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public:
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/** \brief construct with UnitTestTimeFixture
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*/
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explicit
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LimitedIo(UnitTestTimeFixture* uttf = nullptr);
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/// indicates why .run returns
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enum StopReason {
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/// g_io.run() returns normally because there's no work to do
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NO_WORK,
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/// .afterOp() has been invoked nOpsLimit times
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EXCEED_OPS,
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/// nTimeLimit has elapsed
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EXCEED_TIME,
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/// an exception is thrown
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EXCEPTION
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};
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/** \brief g_io.run() with operation count and/or time limit
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* \param nOpsLimit operation count limit, pass UNLIMITED_OPS for no limit
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* \param timeLimit time limit, pass UNLIMITED_TIME for no limit
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* \param tick if this LimitedIo is constructed with UnitTestTimeFixture,
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* this is passed to .advanceClocks(), otherwise ignored
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*/
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StopReason
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run(int nOpsLimit, const time::nanoseconds& timeLimit,
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const time::nanoseconds& tick = time::milliseconds(1));
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/// count an operation
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void
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afterOp();
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/** \brief defer for specified duration
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*
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* equivalent to .run(UNLIMITED_OPS, d)
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*/
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void
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defer(const time::nanoseconds& d)
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{
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this->run(UNLIMITED_OPS, d);
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}
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std::exception_ptr
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getLastException() const
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{
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return m_lastException;
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}
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private:
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/** \brief an exception to stop IO operation
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*/
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class StopException : public std::exception
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{
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};
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void
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afterTimeout();
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public:
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static const int UNLIMITED_OPS;
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static const time::nanoseconds UNLIMITED_TIME;
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private:
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UnitTestTimeFixture* m_uttf;
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StopReason m_reason;
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int m_nOpsRemaining;
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scheduler::EventId m_timeout;
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std::exception_ptr m_lastException;
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bool m_isRunning;
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};
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} // namespace tests
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} // namespace nfd
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#endif // NFD_TESTS_LIMITED_IO_HPP
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