tv-helper-distribution-test.cc

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/*
 * Copyright (c) 2014 University of Washington
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Benjamin Cizdziel <ben.cizdziel@gmail.com>
 */
 
#include <ns3/log.h>
#include <ns3/test.h>
#include <ns3/tv-spectrum-transmitter-helper.h>
 
NS_LOG_COMPONENT_DEFINE("TvHelperDistributionTest");
 
using namespace ns3;
 
class TvHelperDistributionTestCase : public TestCase
{
  public:
    TvHelperDistributionTestCase(uint32_t maxNumTransmitters);
    ~TvHelperDistributionTestCase() override;
 
  private:
    void DoRun() override;
    static std::string Name(uint32_t maxNumTransmitters);
    uint32_t m_maxNumTransmitters; 
};
 
std::string
TvHelperDistributionTestCase::Name(uint32_t maxNumTransmitters)
{
    std::ostringstream oss;
    oss << "Max Number of Transmitters = " << maxNumTransmitters;
    return oss.str();
}
 
TvHelperDistributionTestCase::TvHelperDistributionTestCase(uint32_t maxNumTransmitters)
    : TestCase(Name(maxNumTransmitters)),
      m_maxNumTransmitters(maxNumTransmitters)
{
}
 
TvHelperDistributionTestCase::~TvHelperDistributionTestCase()
{
}
 
void
TvHelperDistributionTestCase::DoRun()
{
    NS_LOG_FUNCTION(m_maxNumTransmitters);
    TvSpectrumTransmitterHelper tvTransHelper;
    uint32_t rand;
    uint32_t maxLow = 0;
    uint32_t minMid = m_maxNumTransmitters;
    uint32_t maxMid = 0;
    uint32_t minHigh = m_maxNumTransmitters;
    for (int i = 0; i < 30; i++)
    {
        rand = tvTransHelper.GetRandomNumTransmitters(TvSpectrumTransmitterHelper::DENSITY_LOW,
                                                      m_maxNumTransmitters);
        NS_TEST_ASSERT_MSG_GT(rand, 0, "lower bound exceeded");
        if (rand > maxLow)
        {
            maxLow = rand;
        }
    }
    for (int i = 0; i < 30; i++)
    {
        rand = tvTransHelper.GetRandomNumTransmitters(TvSpectrumTransmitterHelper::DENSITY_MEDIUM,
                                                      m_maxNumTransmitters);
        if (rand < minMid)
        {
            minMid = rand;
        }
        if (rand > maxMid)
        {
            maxMid = rand;
        }
    }
    for (int i = 0; i < 30; i++)
    {
        rand = tvTransHelper.GetRandomNumTransmitters(TvSpectrumTransmitterHelper::DENSITY_HIGH,
                                                      m_maxNumTransmitters);
        NS_TEST_ASSERT_MSG_LT(rand, m_maxNumTransmitters + 1, "upper bound exceeded");
        if (rand < minHigh)
        {
            minHigh = rand;
        }
    }
    NS_TEST_ASSERT_MSG_LT(maxLow, minMid, "low density overlaps with medium density");
    NS_TEST_ASSERT_MSG_LT(maxMid, minHigh, "medium density overlaps with high density");
}
 
class TvHelperDistributionTestSuite : public TestSuite
{
  public:
    TvHelperDistributionTestSuite();
};
 
TvHelperDistributionTestSuite::TvHelperDistributionTestSuite()
    : TestSuite("tv-helper-distribution", UNIT)
{
    NS_LOG_INFO("creating TvHelperDistributionTestSuite");
    for (uint32_t maxNumTransmitters = 3; maxNumTransmitters <= 203; maxNumTransmitters += 10)
    {
        AddTestCase(new TvHelperDistributionTestCase(maxNumTransmitters), TestCase::QUICK);
    }
}
 
static TvHelperDistributionTestSuite g_TvHelperDistributionTestSuite;