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/**
* @file llsingleton_test.cpp
* @date 2011-08-11
* @brief Unit test for the LLSingleton class
*
* $LicenseInfo:firstyear=2011&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2011, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "llsingleton.h"
#include "../test/lltut.h"
// Capture execution sequence by appending to log string.
std::string sLog;
#define DECLARE_CLASS(CLS) \
struct CLS: public LLSingleton<CLS> \
{ \
static enum dep_flag { \
DEP_NONE, /* no dependency */ \
DEP_CTOR, /* dependency in ctor */ \
DEP_INIT /* dependency in initSingleton */ \
} sDepFlag; \
\
CLS(); \
void initSingleton(); \
void cleanupSingleton(); \
~CLS(); \
}; \
\
CLS::dep_flag CLS::sDepFlag = DEP_NONE
DECLARE_CLASS(A);
DECLARE_CLASS(B);
#define DEFINE_MEMBERS(CLS, OTHER) \
CLS::CLS() \
{ \
sLog.append(#CLS); \
if (sDepFlag == DEP_CTOR) \
{ \
(void)OTHER::instance(); \
} \
} \
\
void CLS::initSingleton() \
{ \
sLog.append("i" #CLS); \
if (sDepFlag == DEP_INIT) \
{ \
(void)OTHER::instance(); \
} \
} \
\
void CLS::cleanupSingleton() \
{ \
sLog.append("x" #CLS); \
} \
\
CLS::~CLS() \
{ \
sLog.append("~" #CLS); \
}
DEFINE_MEMBERS(A, B)
DEFINE_MEMBERS(B, A)
namespace tut
{
struct singleton
{
// We need a class created with the LLSingleton template to test with.
class LLSingletonTest: public LLSingleton<LLSingletonTest>
{
};
};
typedef test_group<singleton> singleton_t;
typedef singleton_t::object singleton_object_t;
tut::singleton_t tut_singleton("LLSingleton");
template<> template<>
void singleton_object_t::test<1>()
{
}
template<> template<>
void singleton_object_t::test<2>()
{
LLSingletonTest* singleton_test = LLSingletonTest::getInstance();
ensure(singleton_test);
}
template<> template<>
void singleton_object_t::test<3>()
{
//Construct the instance
LLSingletonTest::getInstance();
ensure(LLSingletonTest::instanceExists());
//Delete the instance
LLSingletonTest::deleteSingleton();
ensure(!LLSingletonTest::instanceExists());
//Construct it again.
LLSingletonTest* singleton_test = LLSingletonTest::getInstance();
ensure(singleton_test);
ensure(LLSingletonTest::instanceExists());
}
#define TESTS(CLS, OTHER, N0, N1, N2, N3) \
template<> template<> \
void singleton_object_t::test<N0>() \
{ \
set_test_name("just " #CLS); \
CLS::sDepFlag = CLS::DEP_NONE; \
OTHER::sDepFlag = OTHER::DEP_NONE; \
sLog.clear(); \
\
(void)CLS::instance(); \
ensure_equals(sLog, #CLS "i" #CLS); \
LLSingletonBase::cleanupAll(); \
ensure_equals(sLog, #CLS "i" #CLS "x" #CLS); \
LLSingletonBase::deleteAll(); \
ensure_equals(sLog, #CLS "i" #CLS "x" #CLS "~" #CLS); \
} \
\
template<> template<> \
void singleton_object_t::test<N1>() \
{ \
set_test_name(#CLS " ctor depends " #OTHER); \
CLS::sDepFlag = CLS::DEP_CTOR; \
OTHER::sDepFlag = OTHER::DEP_NONE; \
sLog.clear(); \
\
(void)CLS::instance(); \
ensure_equals(sLog, #CLS #OTHER "i" #OTHER "i" #CLS); \
LLSingletonBase::cleanupAll(); \
ensure_equals(sLog, #CLS #OTHER "i" #OTHER "i" #CLS "x" #CLS "x" #OTHER); \
LLSingletonBase::deleteAll(); \
ensure_equals(sLog, #CLS #OTHER "i" #OTHER "i" #CLS "x" #CLS "x" #OTHER "~" #CLS "~" #OTHER); \
} \
\
template<> template<> \
void singleton_object_t::test<N2>() \
{ \
set_test_name(#CLS " init depends " #OTHER); \
CLS::sDepFlag = CLS::DEP_INIT; \
OTHER::sDepFlag = OTHER::DEP_NONE; \
sLog.clear(); \
\
(void)CLS::instance(); \
ensure_equals(sLog, #CLS "i" #CLS #OTHER "i" #OTHER); \
LLSingletonBase::cleanupAll(); \
ensure_equals(sLog, #CLS "i" #CLS #OTHER "i" #OTHER "x" #CLS "x" #OTHER); \
LLSingletonBase::deleteAll(); \
ensure_equals(sLog, #CLS "i" #CLS #OTHER "i" #OTHER "x" #CLS "x" #OTHER "~" #CLS "~" #OTHER); \
} \
\
template<> template<> \
void singleton_object_t::test<N3>() \
{ \
set_test_name(#CLS " circular init"); \
CLS::sDepFlag = CLS::DEP_INIT; \
OTHER::sDepFlag = OTHER::DEP_CTOR; \
sLog.clear(); \
\
(void)CLS::instance(); \
ensure_equals(sLog, #CLS "i" #CLS #OTHER "i" #OTHER); \
LLSingletonBase::cleanupAll(); \
ensure_equals(sLog, #CLS "i" #CLS #OTHER "i" #OTHER "x" #CLS "x" #OTHER); \
LLSingletonBase::deleteAll(); \
ensure_equals(sLog, #CLS "i" #CLS #OTHER "i" #OTHER "x" #CLS "x" #OTHER "~" #CLS "~" #OTHER); \
}
TESTS(A, B, 4, 5, 6, 7)
TESTS(B, A, 8, 9, 10, 11)
}
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