satellite-gse-test.cc

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2013 Magister Solutions Ltd
 *
 * 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: Jani Puttonen <jani.puttonen@magister.fi>
 */
 
#include "../model/satellite-generic-stream-encapsulator.h"
#include "../utils/satellite-env-variables.h"
 
#include "ns3/callback.h"
#include "ns3/log.h"
#include "ns3/packet.h"
#include "ns3/ptr.h"
#include "ns3/random-variable-stream.h"
#include "ns3/singleton.h"
#include "ns3/test.h"
 
#include <vector>
 
using namespace ns3;
 
class SatGseTestCase : public TestCase
{
  public:
    SatGseTestCase();
    virtual ~SatGseTestCase();
 
    void Receive(Ptr<Packet> p, Mac48Address source, Mac48Address dest);
 
  private:
    virtual void DoRun(void);
 
    std::vector<uint32_t> m_sentPacketSizes;
 
    std::vector<uint32_t> m_rcvdPacketSizes;
};
 
SatGseTestCase::SatGseTestCase()
    : TestCase("Test GSE.")
{
}
 
SatGseTestCase::~SatGseTestCase()
{
}
 
void
SatGseTestCase::DoRun(void)
{
    // Set simulation output details
    Singleton<SatEnvVariables>::Get()->DoInitialize();
    Singleton<SatEnvVariables>::Get()->SetOutputVariables("test-sat-gse", "", true);
 
    Mac48Address source = Mac48Address::Allocate();
    Mac48Address dest = Mac48Address::Allocate();
 
    uint8_t flowId(0);
    Ptr<SatQueue> queue = CreateObject<SatQueue>(flowId);
    Ptr<SatGenericStreamEncapsulator> gse =
        CreateObject<SatGenericStreamEncapsulator>(source, dest, source, dest, flowId);
    gse->SetQueue(queue);
 
    // Create a receive callback to Receive method of this class.
    gse->SetReceiveCallback(MakeCallback(&SatGseTestCase::Receive, this));
 
    // Random variable for sent packet sizes and tx opportunities
    Ptr<UniformRandomVariable> unif = CreateObject<UniformRandomVariable>();
 
    // Number of created packets. Note, that the LLC implements a maximum buffer
    // size, thus the number of enqued packets cannot be much higher than this.
    uint32_t numPackets(70);
 
    // Create packets and push them to GSE
    for (uint32_t i = 0; i < numPackets; ++i)
    {
        uint32_t packetSize = unif->GetInteger(3, 10000);
        Ptr<Packet> packet = Create<Packet>(packetSize);
        m_sentPacketSizes.push_back(packetSize);
        gse->EnquePdu(packet, dest);
    }
 
    uint32_t bytesLeft(1);
    uint32_t nextMinTxO(0);
    uint32_t numFrames(15);
    uint32_t frameBytes(50000);
    for (uint32_t b = 0; b < numFrames; ++b)
    {
        uint32_t txOpp(frameBytes);
        while (bytesLeft > 0)
        {
            Ptr<Packet> p = gse->NotifyTxOpportunity(txOpp, bytesLeft, nextMinTxO);
            if (!p)
            {
                break;
            }
            txOpp -= p->GetSize();
            gse->ReceivePdu(p);
        }
    }
    NS_TEST_ASSERT_MSG_EQ(m_sentPacketSizes.size(),
                          m_rcvdPacketSizes.size(),
                          "All sent packets are not received");
 
    Simulator::Destroy();
 
    Singleton<SatEnvVariables>::Get()->DoDispose();
}
 
void
SatGseTestCase::Receive(Ptr<Packet> p, Mac48Address source, Mac48Address dest)
{
    uint32_t rcvdPacketSize = p->GetSize();
    m_rcvdPacketSizes.push_back(rcvdPacketSize);
    uint32_t numRcvdPackets = m_rcvdPacketSizes.size();
 
    NS_TEST_ASSERT_MSG_EQ(m_sentPacketSizes[numRcvdPackets - 1],
                          m_rcvdPacketSizes[numRcvdPackets - 1],
                          "Wrong size packet received");
}
 
class SatGseTraceSuite : public TestSuite
{
  public:
    SatGseTraceSuite();
};
 
SatGseTraceSuite::SatGseTraceSuite()
    : TestSuite("sat-gse-test", Type::UNIT)
{
    AddTestCase(new SatGseTestCase, TestCase::Duration::QUICK);
}
 
// Do allocate an instance of this TestSuite
static SatGseTraceSuite SatGseTestSuite;