semaphoretest.cpp

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//
// SemaphoreTest.cpp
//
// $Id: //poco/Main/Foundation/testsuite/src/SemaphoreTest.cpp#5 $
//
// Copyright (c) 2004, Guenter Obiltschnig/Applied Informatics.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//
// 3. Redistributions in any form must be accompanied by information on
//    how to obtain complete source code for this software and any
//    accompanying software that uses this software.  The source code
//    must either be included in the distribution or be available for no
//    more than the cost of distribution plus a nominal fee, and must be
//    freely redistributable under reasonable conditions.  For an
//    executable file, complete source code means the source code for all
//    modules it contains.  It does not include source code for modules or
//    files that typically accompany the major components of the operating
//    system on which the executable file runs.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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//


#include "SemaphoreTest.h"
#include "CppUnit/TestCaller.h"
#include "CppUnit/TestSuite.h"
#include "Foundation/Thread.h"
#include "Foundation/Runnable.h"
#include "Foundation/Semaphore.h"
#include "Foundation/Exception.h"


using Foundation::Thread;
using Foundation::Runnable;
using Foundation::Semaphore;
using Foundation::TimeoutException;


class SemaRunnable: public Runnable
{
public:
	SemaRunnable(int n, int max): _ran(false), _sema(n, max)
	{
	}
	
	void run()
	{
		_sema.wait();
		_ran = true;
	}
	
	bool ran() const
	{
		return _ran;
	}
	
	void set()
	{
		_sema.set();
	}
	
	void wait()
	{
		_sema.wait();
	}
	
	void wait(long milliseconds)
	{
		_sema.wait(milliseconds);
	}

	bool tryWait(long milliseconds)
	{
		return _sema.tryWait(milliseconds);
	}
	
private:
	bool _ran;
	Semaphore _sema;
};


SemaphoreTest::SemaphoreTest(const std::string& name): CppUnit::TestCase(name)
{
}


SemaphoreTest::~SemaphoreTest()
{
}


void SemaphoreTest::testInitZero()
{
	SemaRunnable r(0, 3);
	assert (!r.tryWait(10));
	r.set();
	r.wait();
	try
	{
		r.wait(100);
		failmsg("must timeout");
	}
	catch (TimeoutException&)
	{
	}
	catch (...)
	{
		failmsg("wrong exception");
	}
	r.set();
	r.set();
	assert (r.tryWait(0));
	r.wait();
	assert (!r.tryWait(10));
	
	Thread t;
	t.start(r);
	Thread::sleep(100);
	assert (!r.ran());
	r.set();
	t.join();
	assert (r.ran());
	assert (!r.tryWait(10));
}


void SemaphoreTest::testInitNonZero()
{
	SemaRunnable r(2, 2);
	r.wait();
	assert (r.tryWait(10));
	assert (!r.tryWait(10));
	r.set();
	assert (r.tryWait(10));
	assert (!r.tryWait(10));
}


void SemaphoreTest::setUp()
{
}


void SemaphoreTest::tearDown()
{
}


CppUnit::Test* SemaphoreTest::suite()
{
	CppUnit::TestSuite* pSuite = new CppUnit::TestSuite("SemaphoreTest");

	CppUnit_addTest(pSuite, SemaphoreTest, testInitZero);
	CppUnit_addTest(pSuite, SemaphoreTest, testInitNonZero);

	return pSuite;
}