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96 lines
2.1 KiB
96 lines
2.1 KiB
#include <cxxtest/TestSuite.h>
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#define private public // need to reach Singleton's private m_instance
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#include "Singleton.hpp"
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#include "Common.hpp"
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class TestSingletonSuite : public CxxTest::TestSuite
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{
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class BasicSingleton : public Singleton<BasicSingleton>
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{
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public:
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int getSeven() { return 7; }
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};
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public:
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void testBasic( void )
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{
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// no instance yet
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TS_ASSERT_EQUALS (BasicSingleton::getInstance(), (BasicSingleton*)0);
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BasicSingleton::createInstance();
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TS_ASSERT_DIFFERS (BasicSingleton::getInstance(), (BasicSingleton*)0);
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BasicSingleton* p1;
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BasicSingleton* p2;
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p1 = BasicSingleton::getInstance();
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p2 = BasicSingleton::getInstance();
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TS_ASSERT_EQUALS ( p1, p2 );
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TS_ASSERT_EQUALS( BasicSingleton::getInstance()->getSeven(), 7 );
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BasicSingleton::createInstance();
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p2 = BasicSingleton::getInstance();
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TS_ASSERT_EQUALS ( (void*)p1, (void*)p2 );
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BasicSingleton::destroy();
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TS_ASSERT_EQUALS (BasicSingleton::getInstance(), (BasicSingleton*)0);
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}
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/** @note TestMe class has to be unittested, but it uses a singleton: EvilClass
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* Which takes way too much time to use in a unittest (it's an LDAP connection,
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* calculates for too long, etc)
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*
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* So we plan to destroy EvilClass and put a DummyClass (which is derived from
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* EvilClass and implements the expensice calls with dummy ones) to TestMe
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*/
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class TestMe
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{
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public:
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int fv()
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{
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TRACE(this);
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return EvilClass::getInstance()->getValue();
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}
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};
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class EvilClass : public Singleton<EvilClass>
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{
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public:
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virtual int getValue(void)
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{
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TRACE(this);
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return 665;
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}
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};
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class DummyClass : public EvilClass
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{
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public:
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int getValue(void)
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{
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TRACE(this);
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return 13;
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}
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};
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void testAdvancedTest( void )
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{
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TestMe tm;
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EvilClass::createInstance();
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TS_ASSERT_EQUALS ( tm.fv(), 665 );
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EvilClass::destroy();
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EvilClass::m_instance = dynamic_cast<EvilClass*>(new DummyClass());
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TS_ASSERT_EQUALS ( tm.fv(), 13 );
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EvilClass::destroy();
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}
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};
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