/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
 * Copyright (C) 2014 Named Data Networking Project
 * See COPYING for copyright and distribution information.
 */

#include "core/scheduler.hpp"

#include <boost/test/unit_test.hpp>

namespace nfd {

BOOST_AUTO_TEST_SUITE(CoreScheduler)

struct SchedulerFixture
{
  SchedulerFixture()
    : count1(0)
    , count2(0)
    , count3(0)
    , count4(0)
  {
  }
    
  void
  event1()
  {
    BOOST_CHECK_EQUAL(count3, 1);
    ++count1;
  }

  void
  event2()
  {
    ++count2;
  }

  void
  event3()
  {
    BOOST_CHECK_EQUAL(count1, 0);
    ++count3;
  }

  void
  event4()
  {
    ++count4;
  }
  
  int count1;
  int count2;
  int count3;
  int count4;
};

BOOST_FIXTURE_TEST_CASE(Events, SchedulerFixture)
{
  boost::asio::io_service io; 

  Scheduler scheduler(io);
  scheduler.scheduleEvent(time::seconds(0.1), bind(&SchedulerFixture::event1, this));
  
  EventId i = scheduler.scheduleEvent(time::seconds(0.2), bind(&SchedulerFixture::event2, this));
  scheduler.cancelEvent(i);

  scheduler.scheduleEvent(time::seconds(0.05), bind(&SchedulerFixture::event3, this));

  i = scheduler.scheduleEvent(time::seconds(0.01), bind(&SchedulerFixture::event2, this));
  scheduler.cancelEvent(i);

  i = scheduler.schedulePeriodicEvent(time::seconds(0.3), time::seconds(0.1), bind(&SchedulerFixture::event4, this));
  scheduler.scheduleEvent(time::seconds(0.69), bind(&Scheduler::cancelEvent, &scheduler, i));
  
  io.run();

  BOOST_CHECK_EQUAL(count1, 1);
  BOOST_CHECK_EQUAL(count2, 0);
  BOOST_CHECK_EQUAL(count3, 1);
  BOOST_CHECK_EQUAL(count4, 4);
}

BOOST_AUTO_TEST_CASE(CancelEmptyEvent)
{
  boost::asio::io_service io; 
  Scheduler scheduler(io);
  
  EventId i;
  scheduler.cancelEvent(i);
}

struct SelfCancelFixture
{
  SelfCancelFixture()
    : m_scheduler(m_io)
  {
  }
  
  void
  cancelSelf()
  {
    m_scheduler.cancelEvent(m_selfEventId);
  }
  
  boost::asio::io_service m_io; 
  Scheduler m_scheduler;
  EventId m_selfEventId;
};

BOOST_FIXTURE_TEST_CASE(SelfCancel, SelfCancelFixture)
{
  m_selfEventId = m_scheduler.scheduleEvent(time::seconds(0.1),
                                            bind(&SelfCancelFixture::cancelSelf, this));
  
  BOOST_REQUIRE_NO_THROW(m_io.run());
}

BOOST_AUTO_TEST_SUITE_END()

} // namespace nfd