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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* semaphoretest.cc
*
* Tue Jun 14 22:04:24 CEST 2016
* Copyright 2016 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of DrumGizmo.
*
* DrumGizmo 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.
*
* DrumGizmo 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 a copy of the GNU Lesser General Public License
* along with DrumGizmo; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include <uunit.h>
#include <cassert>
#include <chrono>
#include <iostream>
#include "../src/sem.h"
std::chrono::nanoseconds dist(const std::chrono::duration<float>& a,
const std::chrono::duration<float>& b)
{
if(a > b)
{
return std::chrono::duration_cast<std::chrono::nanoseconds>(a - b);
}
return std::chrono::duration_cast<std::chrono::nanoseconds>(b - a);
}
class SemaphoreTest
: public uUnit
{
public:
SemaphoreTest()
{
uUNIT_TEST(SemaphoreTest::timeoutTest);
}
public:
void timeoutTest()
{
Semaphore sem(0);
{ // 1000ms timeout
auto start = std::chrono::steady_clock::now();
bool res = sem.wait(std::chrono::milliseconds(1000));
uUNIT_ASSERT(!res); // false means timeout
auto stop = std::chrono::steady_clock::now();
// Allow +/-1ms skew
uUNIT_ASSERT(dist((stop - start), std::chrono::milliseconds(1000))
< std::chrono::milliseconds(60));
}
{ // 100ms timeout
auto start = std::chrono::steady_clock::now();
bool res = sem.wait(std::chrono::milliseconds(100));
uUNIT_ASSERT(!res); // false means timeout
auto stop = std::chrono::steady_clock::now();
// Allow +/-1ms skew
uUNIT_ASSERT(dist((stop - start), std::chrono::milliseconds(100))
< std::chrono::milliseconds(60));
}
}
};
// Registers the fixture into the 'registry'
static SemaphoreTest test;
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