histogram-test-suite.cc

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//
// Copyright (c) 2009 INESC Porto
//
// 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: Pedro Fortuna  <pedro.fortuna@inescporto.pt> <pedro.fortuna@gmail.com>
//
 
#include "ns3/histogram.h"
#include "ns3/test.h"
 
using namespace ns3;
 
/**
 * \ingroup stats-tests
 *
 * \brief Histogram Test
 */
class HistogramTestCase : public ns3::TestCase
{
  private:
  public:
    HistogramTestCase();
    void DoRun() override;
};
 
HistogramTestCase::HistogramTestCase()
    : ns3::TestCase("Histogram")
{
}
 
void
HistogramTestCase::DoRun()
{
    Histogram h0(3.5);
    // Testing floating-point bin widths
    {
        for (int i = 1; i <= 10; i++)
        {
            h0.AddValue(3.4);
        }
 
        for (int i = 1; i <= 5; i++)
        {
            h0.AddValue(3.6);
        }
 
        NS_TEST_EXPECT_MSG_EQ_TOL(h0.GetBinWidth(0), 3.5, 1e-6, "");
        NS_TEST_EXPECT_MSG_EQ(h0.GetNBins(), 2, "");
        NS_TEST_EXPECT_MSG_EQ_TOL(h0.GetBinStart(1), 3.5, 1e-6, "");
        NS_TEST_EXPECT_MSG_EQ(h0.GetBinCount(0), 10, "");
        NS_TEST_EXPECT_MSG_EQ(h0.GetBinCount(1), 5, "");
    }
 
    {
        // Testing bin expansion
        h0.AddValue(74.3);
        NS_TEST_EXPECT_MSG_EQ(h0.GetNBins(), 22, "");
        NS_TEST_EXPECT_MSG_EQ(h0.GetBinCount(21), 1, "");
    }
}
 
/**
 * \ingroup stats-tests
 *
 * \brief Histogram TestSuite
 */
class HistogramTestSuite : public TestSuite
{
  public:
    HistogramTestSuite();
};
 
HistogramTestSuite::HistogramTestSuite()
    : TestSuite("histogram", Type::UNIT)
{
    AddTestCase(new HistogramTestCase, TestCase::Duration::QUICK);
}
 
static HistogramTestSuite g_HistogramTestSuite; //!< Static variable for test initialization