/*
 * Copyright (c) 2010 Remko Tronçon
 * Licensed under the GNU General Public License v3.
 * See Documentation/Licenses/GPLv3.txt for more information.
 */

#include <cppunit/extensions/HelperMacros.h>
#include <cppunit/extensions/TestFactoryRegistry.h>
#include <boost/thread.hpp>
#include <boost/bind.hpp>

#include <Swiften/EventLoop/EventOwner.h>
#include <Swiften/EventLoop/SimpleEventLoop.h>
#include <Swiften/EventLoop/DummyEventLoop.h>
#include <Swiften/Base/sleep.h>

using namespace Swift;

class EventLoopTest : public CppUnit::TestFixture {
		CPPUNIT_TEST_SUITE(EventLoopTest);
		CPPUNIT_TEST(testPost);
		CPPUNIT_TEST(testRemove);
		CPPUNIT_TEST(testHandleEvent_Recursive);
		CPPUNIT_TEST_SUITE_END();

	public:
		void setUp() {
			events_.clear();
		}

		void testPost() {
			SimpleEventLoop testling;

			testling.postEvent(boost::bind(&EventLoopTest::logEvent, this, 1));
			testling.postEvent(boost::bind(&EventLoopTest::logEvent, this, 2));
			testling.stop();
			testling.run();

			CPPUNIT_ASSERT_EQUAL(2, static_cast<int>(events_.size()));
			CPPUNIT_ASSERT_EQUAL(1, events_[0]);
			CPPUNIT_ASSERT_EQUAL(2, events_[1]);
		}

		void testRemove() {
			SimpleEventLoop testling;
			boost::shared_ptr<MyEventOwner> eventOwner1(new MyEventOwner());
			boost::shared_ptr<MyEventOwner> eventOwner2(new MyEventOwner());

			testling.postEvent(boost::bind(&EventLoopTest::logEvent, this, 1), eventOwner1);
			testling.postEvent(boost::bind(&EventLoopTest::logEvent, this, 2), eventOwner2);
			testling.postEvent(boost::bind(&EventLoopTest::logEvent, this, 3), eventOwner1);
			testling.postEvent(boost::bind(&EventLoopTest::logEvent, this, 4), eventOwner2);
			testling.removeEventsFromOwner(eventOwner2);
			testling.stop();
			testling.run();

			CPPUNIT_ASSERT_EQUAL(2, static_cast<int>(events_.size()));
			CPPUNIT_ASSERT_EQUAL(1, events_[0]);
			CPPUNIT_ASSERT_EQUAL(3, events_[1]);
		}

		void testHandleEvent_Recursive() {
			DummyEventLoop testling;
			boost::shared_ptr<MyEventOwner> eventOwner(new MyEventOwner());

			testling.postEvent(boost::bind(&EventLoopTest::runEventLoop, this, &testling, eventOwner), eventOwner);
			testling.postEvent(boost::bind(&EventLoopTest::logEvent, this, 0), eventOwner);
			testling.processEvents();

			CPPUNIT_ASSERT_EQUAL(2, static_cast<int>(events_.size()));
			CPPUNIT_ASSERT_EQUAL(0, events_[0]);
			CPPUNIT_ASSERT_EQUAL(1, events_[1]);
		}
	
	private:
		struct MyEventOwner : public EventOwner {};
		void logEvent(int i) {
			events_.push_back(i);
		}
		void runEventLoop(DummyEventLoop* loop, boost::shared_ptr<MyEventOwner> eventOwner) {
			loop->processEvents();
			CPPUNIT_ASSERT_EQUAL(0, static_cast<int>(events_.size()));
			loop->postEvent(boost::bind(&EventLoopTest::logEvent, this, 1), eventOwner);
		}

	private:
		std::vector<int> events_;
};

CPPUNIT_TEST_SUITE_REGISTRATION(EventLoopTest);