The document discusses various techniques for testing game code, including: 1. Unit testing frameworks like Google Test and mocking objects to isolate dependencies. 2. Database testing using seed data and frameworks like xDBUnit. 3. Resource validation to check for logical errors in game assets. 4. Various approaches for runtime validation, debugging crashes, and analyzing crash dumps. Testing covers areas like databases, AI, and preventing crashes via assertions.

1. (birdkr@gmail.com)
birdkr@gmail.com)

2. ?

5. CruiseControl.NET

6. CruiseControl.NET

7. CruiseControl.NET
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• Asset
•
•
•
•
• (doxygen)
•

8. ?

9. 1. .
2. .
3. ,
.

10. 테스트 결과 로그
<?xml version="1.0"?>
<maiettest-results tests=“2" failedtests=“1" failures="1" time="0.137">
<report text="time : 680 sec" />
<report text=“총 클라이언트 개수 : 4650" />
<test name=“로그인 반복" time="0.062" >
<success message="success" />
</test>
<test name=“캐릭터 생성 반복" time="0.062" >
<failure message="Crash!" />
</test>
</maiettest-results>

11. 테스트 결과 로그
• 테스트 결과를 XML로 만들고, XSL을 이용
하여 CruseControl.NET에 출력한다.

12. Feedback

14. Unit Test
•
•
.

15. Unit Test
TEST(TestMathFunctionTruncateToInt)
{
CHECK_EQUAL(0, GMath::TruncateToInt(0.0));
CHECK_EQUAL(5, GMath::TruncateToInt(5.6));
CHECK_EQUAL(13, GMath::TruncateToInt(13.2));
CHECK_EQUAL(13, GMath::TruncateToInt(13.2));
CHECK_EQUAL(-6, GMath::TruncateToInt(-5.6));
CHECK_EQUAL(-3, GMath::TruncateToInt(-2.1));
}

16. Unit Test
TEST(ShieldCanBeDamaged)
{
World world;
world.Create();
Player player;
player.Create(world, vec3(1000,1000,0));
player.SetHealth(1000);
Shield shield;
shield.SetHealth(100);
player.Equip(shield);
player.Damage(200);
CHECK(shield.GetHealth() == 0);
CHECK(player.GetHealth() == 900);
}

17. Unit Test

18. Unit Test
TEST_FIXTURE(FLogin, TestLogin_MC_COMM_REQUEST_LOGIN_SERVER_Success)
{
MakeParam_TD_LOGIN_INFO();
TD_LOGIN_INFO tdLoginInfo = MakeParam_TD_LOGIN_INFO();
OnRecv_MMC_COMM_REQUEST_LOGIN_SERVER(m_nRequestID, m_nConnectionKey, &tdLoginInfo
tdLoginInfo);
OnRecv_MMC_COMM_REQUEST_LOGIN_SERVER(m_nRequestID, m_nConnectionKey, &tdLoginInfo);
// 로그인 하기 전의 값 체크
CHECK_EQUAL(0, gmgr.pPlayerObjectManager->GetPlayersCount());
// 클라이언트로부터 존 입장 패킷 받음
OnRecv_MC_COMM_REQUEST_LOGIN_SERVER(m_nConnectionKey);
OnRecv_MC_COMM_REQUEST_LOGIN_SERVER(m_nConnectionKey);
// 마스터 서버로 인증키 확인 패킷 보냈는지 체크
CHECK_EQUAL(MC_COMM_RESPONSE_LOGIN_SERVER, m_pLink- GetCommandID(0));
CHECK_EQUAL(MC_COMM_RESPONSE_LOGIN_SERVER, m_pLink->GetCommandID(0));
CHECK_EQUAL(RESULT_SUCCESS, m_pLink- GetParam<int>(0,
CHECK_EQUAL(RESULT_SUCCESS, m_pLink->GetParam<int>(0, 0));
CHECK_EQUAL(m_pLink->GetUID(), m_pLink->GetParam<MUID>(0, 1));
CHECK_EQUAL(m_pLink- GetUID(), m_pLink- GetParam<MUID>(0,
// 로그인 후 값 체크
CHECK_EQUAL(1, gmgr.pPlayerObjectManager->GetPlayersCount());
GPlayerObject* pPlayerObject = gmgr.pPlayerObjectManager->GetPlayer(m_pLink->GetUID());
CHECK(pPlayerObject != NULL);
CHECK_EQUAL(m_nGUID, pPlayerObject->GetAccountInfo().nGUID);
CHECK_EQUAL(string(“birdkr”), string(pPlayerObject->GetAccountInfo().strID));
}

19. Mock Object
class MockPlayer : public GPlayer
{
public:
MockPlayer() {};
virtual ~ MockPlayer() {};
…
virtual void SendToThisSector (MPacket* pPacket) override { }
virtual void SendToMe(MPacket * pPacket) override { }
virtual void SendToGuild(MPacket* pPacket) override { }
…
};

20. ,
class XSystem
{
public:
virtual unsigned int GetNowTime()
{
return timeGetTime()
timeGetTime()();
}
virtual int RandomNumber(int nMin, int nMax)
{
return (rand() % (nMax - nMin + 1)) + nMin;
rand()
rand
}
};

21. ,
class MockSystem : public XSystem
{
protected:
unsigned int m_nExpectedNowTime;
public:
virtual unsigned int GetNowTime()
{
if (m_nExpectedNowTime != 0)
return m_nExpectedNowTime;
return XSystem::GetNowTime();
}
void ExpectNowTime(unsigned int nNowTime)
{
m_nExpectedNowTime = nNowTime;
}
};

22. ,
TEST_FIXTURE(FPlayerInOut2, TestObjectCacheDelete)
{
vec3 vNewPos = vec3(100.0f, 100.0f, 0.0f);
CHECK_EQUAL(2, gg.omgr->GetCount());
m_pNet->OnRecv( MC_ENTITY_WARP, 3, NEW_ID(m_pMyPlayer->GetID
Update(0.1f);
CHECK_CLOSE(100.0f, m_pMyPlayer->GetPosition().x, 0.001f);
CHECK_CLOSE(100.0f, m_pMyPlayer->GetPosition().y, 0.001f);
XExpectNowTime(XGetNowTime() + 10000 );
Update(10.0f);
// 멀리 있는 다른 플레이어가 지워졌다.
CHECK_EQUAL(1, gg.omgr->GetCount());
}

23. ,
template <class Type>
class GTestMgrWrapper : public MInstanceChanger<Type>
{
public:
GTestMgrWrapper() : MInstanceChanger()
{
m_pOriginal = gmgr.Change(m_pTester);
}
~GTestMgrWrapper()
{
gmgr.Change(m_pOriginal);
}
};

24. ,
TEST_FIXTURE(FChangeMode, TestNPC_SightRange)
{
GTestMgrWrapper<GNPCInfoMgr> m_NPCInfoMgrWrapper;
m_NPCInfo.nSightRange = 1000;
GNPC* pNPC = m_pMap->SpawnTestNPC(&m_NPCInfo);
CHECK_EQUAL(1000, pNPC->GetSightRange());
pNPC->ChangeMode(NPC_MODE_1);
CHECK_EQUAL(500, pNPC->GetSightRange());
}

25. Refactoring Test Code
• Mock Object
• override
• Google C++ Mocking Framework!

26. Refactoring Test Code
• UnitTestHelper
– Helper
.
– ) GUTHelper_NPC::SpawnNPC()

27. Refactoring Test Code
• Fixture
.
class FBasePlayer;
class FBaseItem;
class FBaseNPC;
class FBaseMap;
class FBaseNetClient;

28. Refactoring Test Code
• Fixture
.
class FForCombatTest : public FBaseMockLink,
public FBaseNetClient,
public FBasePlayer,
public FBaseMap,
public FBaseMapMgr,
public FBasePlayer
{
…
};

29. Refactoring Test Code
Class Fduel // Fixture
{
…
void CHECK_DuelCancel()
{
CHECK_EQUAL(m_pLinkRequester->GetCommand(0).GetID(), MC_DUEL_CANCEL);
CHECK_EQUAL(m_pLinkTarget->GetCommand(0).GetID(), MC_DUEL_CANCEL);
}
void CHECK_DuelFinished(CPlayer* pWinner, CPlayer* pLoser)
{
MockLink* pWinnerLink = (pWinner==m_pPlayerRequester) ? M_pLinkRequester : m_pLinkT
const Mcommand& Command = pWinnerLink->GetCommand();
CHECK_EQUAL(Command.GetID(), MC_DUEL_FINISHED);
int nWinnerID, nLoserID;
Command.GetParam(&nWinnerID, 0, MPT_INT);
Command.GetParam(&nLoserID, 0, MPT_INT);
CHECK_EQUAL(nWinnerID, pWinner->GetID());
CHECK_EQUAL(nLoserID, pLoser->GetID());
}
}

30. Refactoring Test Code
TEST_FIXTURE(FDuel, DuelQuestionRefuse)
{
CHECK_EQUAL(gmgr.pDuelMgr->GetCount(), 0);
DuelRequest();
CHECK_EQUAL(gmgr.pDuelMgr->GetCount(), 1);
BeginCommandRecord();
DuelResponse(false);
CHECK_DuelCancel();
}

31. Database Unit Test
• 저장 프로시저, 트리거 등에 대한 유닛 테스
트
• xDBUnit 프레임워크가 있지만 자체적으로
작성했다.
– UnitTest++ 사용

32. Database Unit Test
• 테스트 단계
1. SandBox에 데이터베이스, Table, SP 등 생성
2. 테스트에 필요한 데이터 집합(Seed Dataset)
을 생성
3. 테스트 케이스 실행
4. 데이터 변경 검증

33. Seed DataSet

34. Unit Test Code
DBTEST(FGuildDB, CreateGuild)
{
UTestDB.Seed(“GuildTestSeedData.xml”);
uint32 nMasterCID = DBTestHelper::GetCID(“Acc5Char1”);
uint32 nMem1 = DBTestHelper::GetCID(“Acc5Char2”);
uint32 nMem2 = DBTestHelper::GetCID(“Acc5Char3”);
CHECK((0 != nMasterCID) && (0 != nMem1) && (0 != nMem2));
// 길드 생성
TDBRecordSet rs1;
UTestDB.Execute(rs1, “{CALL spGuildCreate (‘%S’, %d)}”, “TGuild4”, nMasterCID);
int nGID = rs1.Field(“GID”).AsInt();
CHECK(0 != nGID);
// 길드가 추가되었는지 레코드 개수 확인
TDBRecordSet rs2;
UTestDB.Execute(rs2, “SELECT COUNT(*) AS cnt FROM dbo.Guild;”);
CHECK_EQUAL(1, rs2.GetFetchedCount());
CHECK_EQUAL(1, rs2.Field(“cnt”).AsInt());
}

35. • 특정 씬을 렌더링하여 원본 이미지와 같은
이미지인지 픽셀별로 비교하여 같은 픽셀
값인지 테스트
• 렌더링에 대한 UnitTest를 만들지 못하여
나온 대안
• 랜덤 요소 제거 등의 추가 작업이 필요함

36. •
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37. Recv
Replay Send
Packet
Queue Command Queue Packet
Local
Local
Event
복사
Replay
Queue
커맨드 구조 ID Data

38. Resource Validator
• 기획자나 아티스트가 작업한 게임 데이터
(Assets)에 논리적으로 잘못된 값이 입력되
었는지 검증
• 예시
– 상점 인터랙션이 설정된 NPC는 비전투형인가?
– 아이템 판매 가격이 구매 가격보다 높은가?
– 몬스터에 설정된 스킬 애니메이션 파일이 존재하는가?
– 맵의 포탈에 연결된 맵이 실재로 존재하는가?

39. Resource Validator
• XML Schema
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40. Resource Validator

41. Runtime Validator
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– DB
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– AI
– Assertion

42. Runtime Validator

43. • XML
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• , , ,
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• Crash

44. AI
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– Crash
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45. Crash Dump Reporter

46. Crash Dump Analyzer
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47. Crash Dump Analyzer
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• WinDbg Command-Line
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48. Crash Dump Analyzer

49. Crash Dump Analyzer

50. ?

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53. Q/A
birdkr@gmail.com
http://mypage.sarang.net