ns2-mobility-helper-test-suite.cc

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/*
 * Copyright (c) 2007 INRIA
 *               2009,2010 Contributors
 *
 * SPDX-License-Identifier: GPL-2.0-only
 *
 * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
 * Contributors: Thomas Waldecker <twaldecker@rocketmail.com>
 *               Martín Giachino <martin.giachino@gmail.com>
 *
 * Brief description: Implementation of a ns2 movement trace file reader.
 *
 * This implementation is based on the ns2 movement documentation of ns2
 * as described in http://www.isi.edu/nsnam/ns/doc/node174.html
 *
 * Valid trace files use the following ns2 statements:
 *
 * $node set X_ x1
 * $node set Y_ y1
 * $node set Z_ z1
 * $ns at $time $node setdest x2 y2 speed
 * $ns at $time $node set X_ x1
 * $ns at $time $node set Y_ Y1
 * $ns at $time $node set Z_ Z1
 *
 */
 
#include "ns3/config.h"
#include "ns3/constant-velocity-mobility-model.h"
#include "ns3/log.h"
#include "ns3/names.h"
#include "ns3/node-container.h"
#include "ns3/node-list.h"
#include "ns3/node.h"
#include "ns3/ns2-mobility-helper.h"
#include "ns3/simulator.h"
#include "ns3/test.h"
 
#include <algorithm>
 
using namespace ns3;
 
NS_LOG_COMPONENT_DEFINE("ns2-mobility-helper-test-suite");
 
// -----------------------------------------------------------------------------
// Testing
// -----------------------------------------------------------------------------
bool
AreVectorsEqual(const Vector& actual, const Vector& limit, double tol)
{
    if (actual.x > limit.x + tol || actual.x < limit.x - tol)
    {
        return false;
    }
    if (actual.y > limit.y + tol || actual.y < limit.y - tol)
    {
        return false;
    }
    if (actual.z > limit.z + tol || actual.z < limit.z - tol)
    {
        return false;
    }
    return true;
}
 
/**
 * @ingroup mobility-test
 *
 * @brief Every test case is supposed to:
 *  1. Generate short mobility trace file
 *  2. Read it back using Ns2MobilityHelper
 *  3. Check initial node positions and speeds.
 *  4. Run simulation listening for all CourseChange events and compare actual mobility with the
 * reference
 */
class Ns2MobilityHelperTest : public TestCase
{
  public:
    /// Single record in mobility reference
    struct ReferencePoint
    {
        std::string node; ///< node ID as string, e.g. "1"
        Time time;        ///< timestamp
        Vector pos;       ///< reference position
        Vector vel;       ///< reference velocity
 
        /**
         * Constructor
         *
         * @param id reference ID
         * @param t time
         * @param p position
         * @param v velocity
         */
        ReferencePoint(const std::string& id, Time t, const Vector& p, const Vector& v)
            : node(id),
              time(t),
              pos(p),
              vel(v)
        {
        }
 
        /**
         * Less-than operator - used to sort by timestamp
         * @param o object to compare to
         * @returns true if the timestamp of the 1st operand is less than the other one's
         */
        bool operator<(const ReferencePoint& o) const
        {
            return time < o.time;
        }
    };
 
    /**
     * Create new test case. To make it useful SetTrace () and AddReferencePoint () must be called
     *
     * @param name        Short description
     * @param timeLimit   Test time limit
     * @param nodes       Number of nodes used in the test trace, 1 by default
     */
    Ns2MobilityHelperTest(const std::string& name, Time timeLimit, uint32_t nodes = 1)
        : TestCase(name),
          m_timeLimit(timeLimit),
          m_nodeCount(nodes),
          m_nextRefPoint(0)
    {
    }
 
    /// Empty
    ~Ns2MobilityHelperTest() override
    {
    }
 
    /**
     * Set NS-2 trace to read as single large string (don't forget to add \\n and quote \"'s)
     * @param trace the mobility trace
     */
    void SetTrace(const std::string& trace)
    {
        m_trace = trace;
    }
 
    /**
     * Add next reference point
     * @param r reference point to add
     */
    void AddReferencePoint(const ReferencePoint& r)
    {
        m_reference.push_back(r);
    }
 
    /**
     * Add next reference point
     * @param id reference point id
     * @param sec reference point ime (in seconds)
     * @param p reference point position
     * @param v reference point velocity
     */
    void AddReferencePoint(const char* id, double sec, const Vector& p, const Vector& v)
    {
        AddReferencePoint(ReferencePoint(id, Seconds(sec), p, v));
    }
 
  private:
    /// Test time limit
    Time m_timeLimit;
    /// Number of nodes used in the test
    uint32_t m_nodeCount;
    /// Trace as string
    std::string m_trace;
    /// Reference mobility
    std::vector<ReferencePoint> m_reference;
    /// Next reference point to be checked
    size_t m_nextRefPoint;
    /// TMP trace file name
    std::string m_traceFile;
 
  private:
    /**
     * Dump NS-2 trace to tmp file
     * @return true on error.
     */
    bool WriteTrace()
    {
        m_traceFile = CreateTempDirFilename("Ns2MobilityHelperTest.tcl");
        std::ofstream of(m_traceFile);
        NS_TEST_ASSERT_MSG_EQ_RETURNS_BOOL(of.is_open(), true, "Need to write tmp. file");
        of << m_trace;
        of.close();
        return false; // no errors
    }
 
    /// Create and name nodes
    void CreateNodes() const
    {
        NodeContainer nodes;
        nodes.Create(m_nodeCount);
        for (uint32_t i = 0; i < m_nodeCount; ++i)
        {
            std::ostringstream os;
            os << i;
            Names::Add(os.str(), nodes.Get(i));
        }
    }
 
    /**
     * Check that all initial positions are correct
     * @return true on error.
     */
    bool CheckInitialPositions()
    {
        std::stable_sort(m_reference.begin(), m_reference.end());
        while (m_nextRefPoint < m_reference.size() && m_reference[m_nextRefPoint].time.IsZero())
        {
            const ReferencePoint& rp = m_reference[m_nextRefPoint];
            Ptr<Node> node = Names::Find<Node>(rp.node);
            NS_TEST_ASSERT_MSG_NE_RETURNS_BOOL(node,
                                               nullptr,
                                               "Can't find node with id " << rp.node);
            Ptr<MobilityModel> mob = node->GetObject<MobilityModel>();
            NS_TEST_ASSERT_MSG_NE_RETURNS_BOOL(mob,
                                               nullptr,
                                               "Can't find mobility for node " << rp.node);
 
            double tol = 0.001;
            NS_TEST_EXPECT_MSG_EQ(AreVectorsEqual(mob->GetPosition(), rp.pos, tol),
                                  true,
                                  "Initial position mismatch for node " << rp.node);
            NS_TEST_EXPECT_MSG_EQ(AreVectorsEqual(mob->GetVelocity(), rp.vel, tol),
                                  true,
                                  "Initial velocity mismatch for node " << rp.node);
 
            m_nextRefPoint++;
        }
        return IsStatusFailure();
    }
 
    /**
     * Listen for course change events
     * @param context event context
     * @param mobility a pointer to the mobility model
     */
    void CourseChange(std::string context, Ptr<const MobilityModel> mobility)
    {
        Time time = Simulator::Now();
        Ptr<Node> node = mobility->GetObject<Node>();
        NS_ASSERT(node);
        std::string id = Names::FindName(node);
        NS_ASSERT(!id.empty());
        Vector pos = mobility->GetPosition();
        Vector vel = mobility->GetVelocity();
 
        NS_TEST_EXPECT_MSG_LT(m_nextRefPoint, m_reference.size(), "Not enough reference points");
        if (m_nextRefPoint >= m_reference.size())
        {
            return;
        }
 
        const ReferencePoint& ref = m_reference[m_nextRefPoint++];
        NS_TEST_EXPECT_MSG_EQ(time, ref.time, "Time mismatch");
        NS_TEST_EXPECT_MSG_EQ(id,
                              ref.node,
                              "Node ID mismatch at time " << time.GetSeconds() << " s");
 
        double tol = 0.001;
        NS_TEST_EXPECT_MSG_EQ(AreVectorsEqual(pos, ref.pos, tol),
                              true,
                              "Position mismatch at time " << time.GetSeconds() << " s for node "
                                                           << id);
        NS_TEST_EXPECT_MSG_EQ(AreVectorsEqual(vel, ref.vel, tol),
                              true,
                              "Velocity mismatch at time " << time.GetSeconds() << " s for node "
                                                           << id);
    }
 
    void DoSetup() override
    {
        CreateNodes();
    }
 
    void DoTeardown() override
    {
        Names::Clear();
        Simulator::Destroy();
    }
 
    /// Go
    void DoRun() override
    {
        NS_TEST_ASSERT_MSG_EQ(m_trace.empty(), false, "Need trace");
        NS_TEST_ASSERT_MSG_EQ(m_reference.empty(), false, "Need reference");
 
        if (WriteTrace())
        {
            return;
        }
        Ns2MobilityHelper mobility(m_traceFile);
        mobility.Install();
        if (CheckInitialPositions())
        {
            return;
        }
        Config::Connect("/NodeList/*/$ns3::MobilityModel/CourseChange",
                        MakeCallback(&Ns2MobilityHelperTest::CourseChange, this));
        Simulator::Stop(m_timeLimit);
        Simulator::Run();
    }
};
 
/**
 * @ingroup mobility-test
 *
 * @brief The test suite
 */
class Ns2MobilityHelperTestSuite : public TestSuite
{
  public:
    Ns2MobilityHelperTestSuite()
        : TestSuite("mobility-ns2-trace-helper", Type::UNIT)
    {
        SetDataDir(NS_TEST_SOURCEDIR);
 
        // to be used as temporary variable for test cases.
        // Note that test suite takes care of deleting all test cases.
        Ns2MobilityHelperTest* t(nullptr);
 
        // Initial position
        t = new Ns2MobilityHelperTest("initial position", Seconds(1));
        t->SetTrace("$node_(0) set X_ 1.0\n"
                    "$node_(0) set Y_ 2.0\n"
                    "$node_(0) set Z_ 3.0\n");
        t->AddReferencePoint("0", 0, Vector(1, 2, 3), Vector(0, 0, 0));
        AddTestCase(t, TestCase::Duration::QUICK);
 
        // Check parsing comments, empty lines and no EOF at the end of file
        t = new Ns2MobilityHelperTest("comments", Seconds(1));
        t->SetTrace("# comment\n"
                    "\n\n" // empty lines
                    "$node_(0) set X_ 1.0 # comment \n"
                    "$node_(0) set Y_ 2.0 ### \n"
                    "$node_(0) set Z_ 3.0 # $node_(0) set Z_ 3.0\n"
                    "#$node_(0) set Z_ 100 #");
        t->AddReferencePoint("0", 0, Vector(1, 2, 3), Vector(0, 0, 0));
        AddTestCase(t, TestCase::Duration::QUICK);
 
        // Simple setdest. Arguments are interpreted as x, y, speed by default
        t = new Ns2MobilityHelperTest("simple setdest", Seconds(10));
        t->SetTrace("$ns_ at 1.0 \"$node_(0) setdest 25 0 5\"");
        //                     id  t  position         velocity
        t->AddReferencePoint("0", 0, Vector(0, 0, 0), Vector(0, 0, 0));
        t->AddReferencePoint("0", 1, Vector(0, 0, 0), Vector(5, 0, 0));
        t->AddReferencePoint("0", 6, Vector(25, 0, 0), Vector(0, 0, 0));
        AddTestCase(t, TestCase::Duration::QUICK);
 
        // Several set and setdest. Arguments are interpreted as x, y, speed by default
        t = new Ns2MobilityHelperTest("square setdest", Seconds(6));
        t->SetTrace("$node_(0) set X_ 0.0\n"
                    "$node_(0) set Y_ 0.0\n"
                    "$ns_ at 1.0 \"$node_(0) setdest 5  0  5\"\n"
                    "$ns_ at 2.0 \"$node_(0) setdest 5  5  5\"\n"
                    "$ns_ at 3.0 \"$node_(0) setdest 0  5  5\"\n"
                    "$ns_ at 4.0 \"$node_(0) setdest 0  0  5\"\n");
        //                     id  t  position         velocity
        t->AddReferencePoint("0", 0, Vector(0, 0, 0), Vector(0, 0, 0));
        t->AddReferencePoint("0", 1, Vector(0, 0, 0), Vector(5, 0, 0));
        t->AddReferencePoint("0", 2, Vector(5, 0, 0), Vector(0, 0, 0));
        t->AddReferencePoint("0", 2, Vector(5, 0, 0), Vector(0, 5, 0));
        t->AddReferencePoint("0", 3, Vector(5, 5, 0), Vector(0, 0, 0));
        t->AddReferencePoint("0", 3, Vector(5, 5, 0), Vector(-5, 0, 0));
        t->AddReferencePoint("0", 4, Vector(0, 5, 0), Vector(0, 0, 0));
        t->AddReferencePoint("0", 4, Vector(0, 5, 0), Vector(0, -5, 0));
        t->AddReferencePoint("0", 5, Vector(0, 0, 0), Vector(0, 0, 0));
        AddTestCase(t, TestCase::Duration::QUICK);
 
        // Copy of previous test case but with the initial positions at
        // the end of the trace rather than at the beginning.
        //
        // Several set and setdest. Arguments are interpreted as x, y, speed by default
        t = new Ns2MobilityHelperTest("square setdest (initial positions at end)", Seconds(6));
        t->SetTrace("$ns_ at 1.0 \"$node_(0) setdest 15  10  5\"\n"
                    "$ns_ at 2.0 \"$node_(0) setdest 15  15  5\"\n"
                    "$ns_ at 3.0 \"$node_(0) setdest 10  15  5\"\n"
                    "$ns_ at 4.0 \"$node_(0) setdest 10  10  5\"\n"
                    "$node_(0) set X_ 10.0\n"
                    "$node_(0) set Y_ 10.0\n");
        //                     id  t  position         velocity
        t->AddReferencePoint("0", 0, Vector(10, 10, 0), Vector(0, 0, 0));
        t->AddReferencePoint("0", 1, Vector(10, 10, 0), Vector(5, 0, 0));
        t->AddReferencePoint("0", 2, Vector(15, 10, 0), Vector(0, 0, 0));
        t->AddReferencePoint("0", 2, Vector(15, 10, 0), Vector(0, 5, 0));
        t->AddReferencePoint("0", 3, Vector(15, 15, 0), Vector(0, 0, 0));
        t->AddReferencePoint("0", 3, Vector(15, 15, 0), Vector(-5, 0, 0));
        t->AddReferencePoint("0", 4, Vector(10, 15, 0), Vector(0, 0, 0));
        t->AddReferencePoint("0", 4, Vector(10, 15, 0), Vector(0, -5, 0));
        t->AddReferencePoint("0", 5, Vector(10, 10, 0), Vector(0, 0, 0));
        AddTestCase(t, TestCase::Duration::QUICK);
 
        // Scheduled set position
        t = new Ns2MobilityHelperTest("scheduled set position", Seconds(2));
        t->SetTrace("$ns_ at 1.0 \"$node_(0) set X_ 10\"\n"
                    "$ns_ at 1.0 \"$node_(0) set Z_ 10\"\n"
                    "$ns_ at 1.0 \"$node_(0) set Y_ 10\"");
        //                     id  t  position         velocity
        t->AddReferencePoint("0", 1, Vector(10, 0, 0), Vector(0, 0, 0));
        t->AddReferencePoint("0", 1, Vector(10, 0, 10), Vector(0, 0, 0));
        t->AddReferencePoint("0", 1, Vector(10, 10, 10), Vector(0, 0, 0));
        AddTestCase(t, TestCase::Duration::QUICK);
 
        // Malformed lines
        t = new Ns2MobilityHelperTest("malformed lines", Seconds(2));
        t->SetTrace("$node() set X_ 1 # node id is not present\n"
                    "$node # incoplete line\"\n"
                    "$node this line is not correct\n"
                    "$node_(0) set X_ 1 # line OK \n"
                    "$node_(0) set Y_ 2 # line OK \n"
                    "$node_(0) set Z_ 3 # line OK \n"
                    "$ns_ at  \"$node_(0) setdest 4 4 4\" # time not present\n"
                    "$ns_ at 1 \"$node_(0) setdest 2 2 1   \" # line OK \n");
        //                     id  t  position         velocity
        t->AddReferencePoint("0", 0, Vector(1, 2, 3), Vector(0, 0, 0));
        t->AddReferencePoint("0", 1, Vector(1, 2, 3), Vector(1, 0, 0));
        t->AddReferencePoint("0", 2, Vector(2, 2, 3), Vector(0, 0, 0));
        AddTestCase(t, TestCase::Duration::QUICK);
 
        // Non possible values
        t = new Ns2MobilityHelperTest("non possible values", Seconds(2));
        t->SetTrace(
            "$node_(0) set X_ 1 # line OK \n"
            "$node_(0) set Y_ 2 # line OK \n"
            "$node_(0) set Z_ 3 # line OK \n"
            "$node_(-22) set Y_ 3 # node id not correct\n"
            "$node_(3.3) set Y_ 1111 # node id not correct\n"
            "$ns_ at sss \"$node_(0) setdest 5 5 5\" # time is not a number\n"
            "$ns_ at 1 \"$node_(0) setdest 2 2 1\" # line OK \n"
            "$ns_ at 1 \"$node_(0) setdest 2 2 -1\" # negative speed is not correct\n"
            "$ns_ at 1 \"$node_(0) setdest 2 2 sdfs\"    # speed is not a number\n"
            "$ns_ at 1 \"$node_(0) setdest 2 2 s232dfs\" # speed is not a number\n"
            "$ns_ at 1 \"$node_(0) setdest 233 2.. s232dfs\"   # more than one non numbers\n"
            "$ns_ at -12 \"$node_(0) setdest 11 22 33\" # time should not be negative\n");
        //                     id  t  position         velocity
        t->AddReferencePoint("0", 0, Vector(1, 2, 3), Vector(0, 0, 0));
        t->AddReferencePoint("0", 1, Vector(1, 2, 3), Vector(1, 0, 0));
        t->AddReferencePoint("0", 2, Vector(2, 2, 3), Vector(0, 0, 0));
        AddTestCase(t, TestCase::Duration::QUICK);
 
        // More than one node
        t = new Ns2MobilityHelperTest("few nodes, combinations of set and setdest", Seconds(10), 3);
        t->SetTrace("$node_(0) set X_ 1.0\n"
                    "$node_(0) set Y_ 2.0\n"
                    "$node_(0) set Z_ 3.0\n"
                    "$ns_ at 1.0 \"$node_(1) setdest 25 0 5\"\n"
                    "$node_(2) set X_ 0.0\n"
                    "$node_(2) set Y_ 0.0\n"
                    "$ns_ at 1.0 \"$node_(2) setdest 5  0  5\"\n"
                    "$ns_ at 2.0 \"$node_(2) setdest 5  5  5\"\n"
                    "$ns_ at 3.0 \"$node_(2) setdest 0  5  5\"\n"
                    "$ns_ at 4.0 \"$node_(2) setdest 0  0  5\"\n");
        //                     id  t  position         velocity
        t->AddReferencePoint("0", 0, Vector(1, 2, 3), Vector(0, 0, 0));
        t->AddReferencePoint("1", 0, Vector(0, 0, 0), Vector(0, 0, 0));
        t->AddReferencePoint("1", 1, Vector(0, 0, 0), Vector(5, 0, 0));
        t->AddReferencePoint("1", 6, Vector(25, 0, 0), Vector(0, 0, 0));
        t->AddReferencePoint("2", 0, Vector(0, 0, 0), Vector(0, 0, 0));
        t->AddReferencePoint("2", 1, Vector(0, 0, 0), Vector(5, 0, 0));
        t->AddReferencePoint("2", 2, Vector(5, 0, 0), Vector(0, 0, 0));
        t->AddReferencePoint("2", 2, Vector(5, 0, 0), Vector(0, 5, 0));
        t->AddReferencePoint("2", 3, Vector(5, 5, 0), Vector(0, 0, 0));
        t->AddReferencePoint("2", 3, Vector(5, 5, 0), Vector(-5, 0, 0));
        t->AddReferencePoint("2", 4, Vector(0, 5, 0), Vector(0, 0, 0));
        t->AddReferencePoint("2", 4, Vector(0, 5, 0), Vector(0, -5, 0));
        t->AddReferencePoint("2", 5, Vector(0, 0, 0), Vector(0, 0, 0));
        AddTestCase(t, TestCase::Duration::QUICK);
 
        // Test for Speed == 0, that acts as stop the node.
        t = new Ns2MobilityHelperTest("setdest with speed cero", Seconds(10));
        t->SetTrace("$ns_ at 1.0 \"$node_(0) setdest 25 0 5\"\n"
                    "$ns_ at 7.0 \"$node_(0) setdest 11  22  0\"\n");
        //                     id  t  position         velocity
        t->AddReferencePoint("0", 0, Vector(0, 0, 0), Vector(0, 0, 0));
        t->AddReferencePoint("0", 1, Vector(0, 0, 0), Vector(5, 0, 0));
        t->AddReferencePoint("0", 6, Vector(25, 0, 0), Vector(0, 0, 0));
        t->AddReferencePoint("0", 7, Vector(25, 0, 0), Vector(0, 0, 0));
        AddTestCase(t, TestCase::Duration::QUICK);
 
        // Test negative positions
        t = new Ns2MobilityHelperTest("test negative positions", Seconds(10));
        t->SetTrace("$node_(0) set X_ -1.0\n"
                    "$node_(0) set Y_ 0\n"
                    "$ns_ at 1.0 \"$node_(0) setdest 0 0 1\"\n"
                    "$ns_ at 2.0 \"$node_(0) setdest 0  -1  1\"\n");
        //                     id  t  position         velocity
        t->AddReferencePoint("0", 0, Vector(-1, 0, 0), Vector(0, 0, 0));
        t->AddReferencePoint("0", 1, Vector(-1, 0, 0), Vector(1, 0, 0));
        t->AddReferencePoint("0", 2, Vector(0, 0, 0), Vector(0, 0, 0));
        t->AddReferencePoint("0", 2, Vector(0, 0, 0), Vector(0, -1, 0));
        t->AddReferencePoint("0", 3, Vector(0, -1, 0), Vector(0, 0, 0));
        AddTestCase(t, TestCase::Duration::QUICK);
 
        // Square setdest with values in the form 1.0e+2
        t = new Ns2MobilityHelperTest("Foalt numbers in 1.0e+2 format", Seconds(6));
        t->SetTrace("$node_(0) set X_ 0.0\n"
                    "$node_(0) set Y_ 0.0\n"
                    "$ns_ at 1.0 \"$node_(0) setdest 1.0e+2  0       1.0e+2\"\n"
                    "$ns_ at 2.0 \"$node_(0) setdest 1.0e+2  1.0e+2  1.0e+2\"\n"
                    "$ns_ at 3.0 \"$node_(0) setdest 0       1.0e+2  1.0e+2\"\n"
                    "$ns_ at 4.0 \"$node_(0) setdest 0       0       1.0e+2\"\n");
        //                     id  t  position         velocity
        t->AddReferencePoint("0", 0, Vector(0, 0, 0), Vector(0, 0, 0));
        t->AddReferencePoint("0", 1, Vector(0, 0, 0), Vector(100, 0, 0));
        t->AddReferencePoint("0", 2, Vector(100, 0, 0), Vector(0, 0, 0));
        t->AddReferencePoint("0", 2, Vector(100, 0, 0), Vector(0, 100, 0));
        t->AddReferencePoint("0", 3, Vector(100, 100, 0), Vector(0, 0, 0));
        t->AddReferencePoint("0", 3, Vector(100, 100, 0), Vector(-100, 0, 0));
        t->AddReferencePoint("0", 4, Vector(0, 100, 0), Vector(0, 0, 0));
        t->AddReferencePoint("0", 4, Vector(0, 100, 0), Vector(0, -100, 0));
        t->AddReferencePoint("0", 5, Vector(0, 0, 0), Vector(0, 0, 0));
        AddTestCase(t, TestCase::Duration::QUICK);
        t = new Ns2MobilityHelperTest("Bug 1219 testcase", Seconds(16));
        t->SetTrace("$node_(0) set X_ 0.0\n"
                    "$node_(0) set Y_ 0.0\n"
                    "$ns_ at 1.0 \"$node_(0) setdest 0  10       1\"\n"
                    "$ns_ at 6.0 \"$node_(0) setdest 0  -10       1\"\n");
        //                     id  t  position         velocity
        t->AddReferencePoint("0", 0, Vector(0, 0, 0), Vector(0, 0, 0));
        t->AddReferencePoint("0", 1, Vector(0, 0, 0), Vector(0, 1, 0));
        t->AddReferencePoint("0", 6, Vector(0, 5, 0), Vector(0, -1, 0));
        t->AddReferencePoint("0", 16, Vector(0, -10, 0), Vector(0, 0, 0));
        AddTestCase(t, TestCase::Duration::QUICK);
        t = new Ns2MobilityHelperTest("Bug 1059 testcase", Seconds(16));
        t->SetTrace("$node_(0) set X_ 10.0\r\n"
                    "$node_(0) set Y_ 0.0\r\n");
        //                     id  t  position         velocity
        t->AddReferencePoint("0", 0, Vector(10, 0, 0), Vector(0, 0, 0));
        AddTestCase(t, TestCase::Duration::QUICK);
        t = new Ns2MobilityHelperTest("Bug 1301 testcase", Seconds(16));
        t->SetTrace("$node_(0) set X_ 10.0\n"
                    "$node_(0) set Y_ 0.0\n"
                    "$ns_ at 1.0 \"$node_(0) setdest 10  0       1\"\n");
        //                     id  t  position         velocity
        // Moving to the current position must change nothing. No NaN
        // speed must be.
        t->AddReferencePoint("0", 0, Vector(10, 0, 0), Vector(0, 0, 0));
        AddTestCase(t, TestCase::Duration::QUICK);
 
        t = new Ns2MobilityHelperTest("Bug 1316 testcase", Seconds(1000));
        t->SetTrace("$node_(0) set X_ 350.00000000000000\n"
                    "$node_(0) set Y_ 50.00000000000000\n"
                    "$ns_ at 50.00000000000000  \"$node_(0) setdest 400.00000000000000 "
                    "50.00000000000000 1.00000000000000\"\n"
                    "$ns_ at 150.00000000000000 \"$node_(0) setdest 400.00000000000000 "
                    "150.00000000000000 4.00000000000000\"\n"
                    "$ns_ at 300.00000000000000 \"$node_(0) setdest 250.00000000000000 "
                    "150.00000000000000 3.00000000000000\"\n"
                    "$ns_ at 350.00000000000000 \"$node_(0) setdest 250.00000000000000 "
                    "50.00000000000000 1.00000000000000\"\n"
                    "$ns_ at 600.00000000000000 \"$node_(0) setdest 250.00000000000000 "
                    "1050.00000000000000 2.00000000000000\"\n"
                    "$ns_ at 900.00000000000000 \"$node_(0) setdest 300.00000000000000 "
                    "650.00000000000000 2.50000000000000\"\n");
        t->AddReferencePoint("0",
                             0.000,
                             Vector(350.000, 50.000, 0.000),
                             Vector(0.000, 0.000, 0.000));
        t->AddReferencePoint("0",
                             50.000,
                             Vector(350.000, 50.000, 0.000),
                             Vector(1.000, 0.000, 0.000));
        t->AddReferencePoint("0",
                             100.000,
                             Vector(400.000, 50.000, 0.000),
                             Vector(0.000, 0.000, 0.000));
        t->AddReferencePoint("0",
                             150.000,
                             Vector(400.000, 50.000, 0.000),
                             Vector(0.000, 4.000, 0.000));
        t->AddReferencePoint("0",
                             175.000,
                             Vector(400.000, 150.000, 0.000),
                             Vector(0.000, 0.000, 0.000));
        t->AddReferencePoint("0",
                             300.000,
                             Vector(400.000, 150.000, 0.000),
                             Vector(-3.000, 0.000, 0.000));
        t->AddReferencePoint("0",
                             350.000,
                             Vector(250.000, 150.000, 0.000),
                             Vector(0.000, 0.000, 0.000));
        t->AddReferencePoint("0",
                             350.000,
                             Vector(250.000, 150.000, 0.000),
                             Vector(0.000, -1.000, 0.000));
        t->AddReferencePoint("0",
                             450.000,
                             Vector(250.000, 50.000, 0.000),
                             Vector(0.000, 0.000, 0.000));
        t->AddReferencePoint("0",
                             600.000,
                             Vector(250.000, 50.000, 0.000),
                             Vector(0.000, 2.000, 0.000));
        t->AddReferencePoint("0",
                             900.000,
                             Vector(250.000, 650.000, 0.000),
                             Vector(2.500, 0.000, 0.000));
        t->AddReferencePoint("0",
                             920.000,
                             Vector(300.000, 650.000, 0.000),
                             Vector(0.000, 0.000, 0.000));
        AddTestCase(t, TestCase::Duration::QUICK);
    }
} g_ns2TransmobilityHelperTestSuite; ///< the test suite