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/* -*- 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 <boost/test/unit_test.hpp>
#include "util/event-emitter.hpp"
namespace ndn {
class EventEmitterTester : noncopyable
{
public:
EventEmitterTester();
int m_hit;
int m_a1;
int m_a2;
int m_a3;
int m_a4;
void
clear();
void
f0();
void
f1(int a1);
void
f2(int a1, int a2);
void
f3(int a1, int a2, int a3);
void
f4(int a1, int a2, int a3, int a4);
};
EventEmitterTester::EventEmitterTester()
{
this->clear();
}
void
EventEmitterTester::clear()
{
m_hit = 0;
m_a1 = 0;
m_a2 = 0;
m_a3 = 0;
m_a4 = 0;
}
void
EventEmitterTester::f0()
{
++m_hit;
}
void
EventEmitterTester::f1(int a1)
{
++m_hit;
m_a1 = a1;
}
void
EventEmitterTester::f2(int a1, int a2)
{
++m_hit;
m_a1 = a1;
m_a2 = a2;
}
void
EventEmitterTester::f3(int a1, int a2, int a3)
{
++m_hit;
m_a1 = a1;
m_a2 = a2;
m_a3 = a3;
}
void
EventEmitterTester::f4(int a1, int a2, int a3, int a4)
{
++m_hit;
m_a1 = a1;
m_a2 = a2;
m_a3 = a3;
m_a4 = a4;
}
static int g_EventEmitterTest_RefObject_copyCount;
class EventEmitterTest_RefObject
{
public:
EventEmitterTest_RefObject() {}
EventEmitterTest_RefObject(const EventEmitterTest_RefObject& other);
};
EventEmitterTest_RefObject::EventEmitterTest_RefObject(const EventEmitterTest_RefObject& other)
{
++g_EventEmitterTest_RefObject_copyCount;
}
void
EventEmitterTest_RefObject_byVal(EventEmitterTest_RefObject a1) {}
void
EventEmitterTest_RefObject_byRef(const EventEmitterTest_RefObject& a1) {}
BOOST_AUTO_TEST_SUITE(UtilEventEmitter)
BOOST_AUTO_TEST_CASE(ZeroListener)
{
EventEmitter<> ee;
BOOST_CHECK_NO_THROW(ee());
}
BOOST_AUTO_TEST_CASE(TwoListeners)
{
EventEmitterTester eet1;
EventEmitterTester eet2;
EventEmitter<> ee;
ee += bind(&EventEmitterTester::f0, &eet1);
ee += bind(&EventEmitterTester::f0, &eet2);
ee();
BOOST_CHECK_EQUAL(eet1.m_hit, 1);
BOOST_CHECK_EQUAL(eet2.m_hit, 1);
}
BOOST_AUTO_TEST_CASE(ZeroArgument)
{
EventEmitterTester eet;
EventEmitter<> ee;
ee += bind(&EventEmitterTester::f0, &eet);
ee();
BOOST_CHECK_EQUAL(eet.m_hit, 1);
}
BOOST_AUTO_TEST_CASE(OneArgument)
{
EventEmitterTester eet;
EventEmitter<int> ee;
ee += bind(&EventEmitterTester::f1, &eet, _1);
ee(11);
BOOST_CHECK_EQUAL(eet.m_hit, 1);
BOOST_CHECK_EQUAL(eet.m_a1, 11);
}
BOOST_AUTO_TEST_CASE(TwoArguments)
{
EventEmitterTester eet;
EventEmitter<int,int> ee;
ee += bind(&EventEmitterTester::f2, &eet, _1, _2);
ee(21, 22);
BOOST_CHECK_EQUAL(eet.m_hit, 1);
BOOST_CHECK_EQUAL(eet.m_a1, 21);
BOOST_CHECK_EQUAL(eet.m_a2, 22);
}
BOOST_AUTO_TEST_CASE(ThreeArguments)
{
EventEmitterTester eet;
EventEmitter<int,int,int> ee;
ee += bind(&EventEmitterTester::f3, &eet, _1, _2, _3);
ee(31, 32, 33);
BOOST_CHECK_EQUAL(eet.m_hit, 1);
BOOST_CHECK_EQUAL(eet.m_a1, 31);
BOOST_CHECK_EQUAL(eet.m_a2, 32);
BOOST_CHECK_EQUAL(eet.m_a3, 33);
}
BOOST_AUTO_TEST_CASE(FourArguments)
{
EventEmitterTester eet;
EventEmitter<int,int,int,int> ee;
ee += bind(&EventEmitterTester::f4, &eet, _1, _2, _3, _4);
ee(41, 42, 43, 44);
BOOST_CHECK_EQUAL(eet.m_hit, 1);
BOOST_CHECK_EQUAL(eet.m_a1, 41);
BOOST_CHECK_EQUAL(eet.m_a2, 42);
BOOST_CHECK_EQUAL(eet.m_a3, 43);
BOOST_CHECK_EQUAL(eet.m_a4, 44);
}
// EventEmitter passes arguments by reference,
// but it also allows a handler that accept arguments by value
BOOST_AUTO_TEST_CASE(HandlerByVal)
{
EventEmitterTest_RefObject refObject;
g_EventEmitterTest_RefObject_copyCount = 0;
EventEmitter<EventEmitterTest_RefObject> ee;
ee += &EventEmitterTest_RefObject_byVal;
ee(refObject);
BOOST_CHECK_EQUAL(g_EventEmitterTest_RefObject_copyCount, 1);
}
// EventEmitter passes arguments by reference, and no copying
// is necessary when handler accepts arguments by reference
BOOST_AUTO_TEST_CASE(HandlerByRef)
{
EventEmitterTest_RefObject refObject;
g_EventEmitterTest_RefObject_copyCount = 0;
EventEmitter<EventEmitterTest_RefObject> ee;
ee += &EventEmitterTest_RefObject_byRef;
ee(refObject);
BOOST_CHECK_EQUAL(g_EventEmitterTest_RefObject_copyCount, 0);
}
BOOST_AUTO_TEST_SUITE_END()
} // namespace ndn