/* -*- 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

 */

#include "ns3/ipv6-address-helper.h"

#include "ns3/ipv4-address-helper.h"

#include "ns3/simple-net-device.h"

#include "ns3/net-device-container.h"

#include "ns3/node-container.h"

#include "ns3/internet-stack-helper.h"

#include "ns3/test.h"

#include "ns3/log.h"

using namespace ns3;

class IpAddressHelperTestCasev6 : public TestCase

{

public:

  IpAddressHelperTestCasev6 ();

  virtual ~IpAddressHelperTestCasev6 ();

private:

  virtual void DoRun (void);

};

IpAddressHelperTestCasev6::IpAddressHelperTestCasev6 ()

  : TestCase ("IpAddressHelper Ipv6 test case")

{

}

IpAddressHelperTestCasev6::~IpAddressHelperTestCasev6 ()

{

}

void

IpAddressHelperTestCasev6::DoRun (void)

{

  Ipv6AddressHelper ip1;

  Ipv6Address ipAddr1;

  ipAddr1 = ip1.NewAddress ();

  // Ipv6AddressHelper that is unconfigured

  NS_TEST_ASSERT_MSG_EQ (ipAddr1, Ipv6Address ("2001:db8::1"), "Ipv6AddressHelper failure");

  ipAddr1 = ip1.NewAddress ();

  NS_TEST_ASSERT_MSG_EQ (ipAddr1, Ipv6Address ("2001:db8::2"), "Ipv6AddressHelper failure");

  ip1.NewNetwork ();

  ipAddr1 = ip1.NewAddress ();

  NS_TEST_ASSERT_MSG_EQ (ipAddr1, Ipv6Address ("2001:db8:0:1:0:0:0:1"), "Ipv6AddressHelper failure");

  // Reset

  ip1.SetBase (Ipv6Address ("2001:db81::"), Ipv6Prefix (32), Ipv6Address ("::1"));

  ipAddr1 = ip1.NewAddress ();

  NS_TEST_ASSERT_MSG_EQ (ipAddr1, Ipv6Address ("2001:db81::1"), "Ipv6AddressHelper failure");

  // Skip a few addresses

  ip1.SetBase (Ipv6Address ("2001:db81::"), Ipv6Prefix (32), Ipv6Address ("::15"));

  ipAddr1 = ip1.NewAddress ();

  NS_TEST_ASSERT_MSG_EQ (ipAddr1, Ipv6Address ("2001:db81::15"), "Ipv6AddressHelper failure");

  ipAddr1 = ip1.NewAddress ();

  NS_TEST_ASSERT_MSG_EQ (ipAddr1, Ipv6Address ("2001:db81::16"), "Ipv6AddressHelper failure");

  // Increment network

  ip1.NewNetwork ();

  ipAddr1 = ip1.NewAddress ();

  NS_TEST_ASSERT_MSG_EQ (ipAddr1, Ipv6Address ("2001:db81:0:1::15"), "Ipv6AddressHelper failure");

  // Reset

  ip1.SetBase (Ipv6Address ("2001:dddd::"), Ipv6Prefix (32), Ipv6Address ("::1"));

  ipAddr1 = ip1.NewAddress (); // ::1

  ipAddr1 = ip1.NewAddress (); // ::2

  ipAddr1 = ip1.NewAddress (); // ::3

  ip1.NewNetwork (); // 0:1

  ip1.NewNetwork (); // 0:2

  ipAddr1 = ip1.NewAddress (); // ::1 again

  NS_TEST_ASSERT_MSG_EQ (ipAddr1, Ipv6Address ("2001:dddd:0:2::1"), "Ipv6AddressHelper failure");

  // Set again

  ip1.SetBase (Ipv6Address ("2001:db82::1"), Ipv6Prefix (32));

  ipAddr1 = ip1.NewAddress ();

  NS_TEST_ASSERT_MSG_EQ (ipAddr1, Ipv6Address ("2001:db82::1"), "Ipv6AddressHelper failure");

  // Test container assignment

  NodeContainer n;

  n.Create (2);

  /* Install IPv4/IPv6 stack */

  InternetStackHelper internetv6;

  internetv6.SetIpv4StackInstall (false);

  internetv6.Install (n);

  NetDeviceContainer d;

  Ptr<SimpleNetDevice> s1 = CreateObject<SimpleNetDevice> ();

  s1->SetAddress (Mac48Address::Allocate ());

  n.Get (0)->AddDevice (s1);

  Ptr<SimpleNetDevice> s2 = CreateObject<SimpleNetDevice> ();

  s2->SetAddress (Mac48Address::Allocate ());

  n.Get (1)->AddDevice (s2);

  d.Add (s1);

  d.Add (s2);

  ip1.SetBase (Ipv6Address ("2001:00aa::"), Ipv6Prefix (56));

  Ipv6InterfaceContainer ic;

  ic = ip1.Assign (d);

  // Check that d got intended addresses

  Ipv6InterfaceAddress d1addr;

  Ipv6InterfaceAddress d2addr;

  // Interface 0 is loopback, interface 1 is s1, and the 0th addr is linklocal 

  // so we look at address (1,1)

  d1addr = n.Get (0)->GetObject <Ipv6> ()->GetAddress (1, 1); 

  NS_TEST_ASSERT_MSG_EQ (d1addr.GetAddress (), Ipv6Address ("2001:00aa:0000:0000:0200:00ff:fe00:0001"), "Ipv6AddressHelper failure");

  // Look also at the interface container (device 0, address 1)

  NS_TEST_ASSERT_MSG_EQ (ic.GetAddress (0,1), Ipv6Address ("2001:00aa:0000:0000:0200:00ff:fe00:0001"), "Ipv6AddressHelper failure");

  d2addr = n.Get (1)->GetObject <Ipv6> ()->GetAddress (1, 1); 

  // Look at second container

  NS_TEST_ASSERT_MSG_EQ (d2addr.GetAddress (), Ipv6Address ("2001:00aa:0000:0000:0200:00ff:fe00:0002"), "Ipv6AddressHelper failure");

  // Look also at the interface container (device 0, address 1)

  NS_TEST_ASSERT_MSG_EQ (ic.GetAddress (1,1), Ipv6Address ("2001:00aa:0000:0000:0200:00ff:fe00:0002"), "Ipv6AddressHelper failure");

}

class Ipv6AddressHelperTestSuite : public TestSuite

{

public:

  Ipv6AddressHelperTestSuite ();

};

Ipv6AddressHelperTestSuite::Ipv6AddressHelperTestSuite ()

  : TestSuite ("ipv6-address-helper", UNIT)

{

  AddTestCase (new IpAddressHelperTestCasev6);

}

// Do not forget to allocate an instance of this TestSuite

static Ipv6AddressHelperTestSuite ipv6AddressHelperTestSuite;