one-uniform-random-variable-many-get-value-calls-test-suite.cc

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2012 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: Mitch Watrous (watrous@u.washington.edu)
 */

#include "ns3/test.h"
#include "ns3/config.h"
#include "ns3/double.h"
#include "ns3/random-variable-stream.h"
#include <vector>

using namespace ns3;


// ===========================================================================
// Test case for one uniform distribution random variable stream generator
// ===========================================================================

class OneUniformRandomVariableManyGetValueCallsTestCase : public TestCase
{
public:
  OneUniformRandomVariableManyGetValueCallsTestCase ();
  virtual ~OneUniformRandomVariableManyGetValueCallsTestCase ();

private:
  virtual void DoRun (void);
};

OneUniformRandomVariableManyGetValueCallsTestCase::OneUniformRandomVariableManyGetValueCallsTestCase ()
  : TestCase ("One Uniform Random Variable with Many GetValue() Calls")
{
}

OneUniformRandomVariableManyGetValueCallsTestCase::~OneUniformRandomVariableManyGetValueCallsTestCase ()
{
}

void
OneUniformRandomVariableManyGetValueCallsTestCase::DoRun (void)
{
  double min = 0.0;
  double max = 10.0;

  Config::SetDefault ("ns3::UniformRandomVariable::Min", DoubleValue (min));
  Config::SetDefault ("ns3::UniformRandomVariable::Max", DoubleValue (max));

  Ptr<UniformRandomVariable> uniform = CreateObject<UniformRandomVariable> ();

  // Get many values from 1 random number generator.
  double value;
  int count = 100000000;
  for (int i = 0; i < count; i++)
    {
      value = uniform->GetValue ();

      NS_TEST_ASSERT_MSG_GT (value, min, "Value less than minimum.");
      NS_TEST_ASSERT_MSG_LT (value, max, "Value greater than maximum.");
    }
}

class OneUniformRandomVariableManyGetValueCallsTestSuite : public TestSuite
{
public:
  OneUniformRandomVariableManyGetValueCallsTestSuite ();
};

OneUniformRandomVariableManyGetValueCallsTestSuite::OneUniformRandomVariableManyGetValueCallsTestSuite ()
  : TestSuite ("one-uniform-random-variable-many-get-value-calls", PERFORMANCE)
{
  AddTestCase (new OneUniformRandomVariableManyGetValueCallsTestCase, TestCase::QUICK);
}

static OneUniformRandomVariableManyGetValueCallsTestSuite oneUniformRandomVariableManyGetValueCallsTestSuite;