corelib/tests/ptr-owned.cc

#include <lw/lib/Pointers.hh>
#include <cppunit/extensions/HelperMacros.h>
using namespace lw;


class OwnPointerTest : public CppUnit::TestFixture
{
	CPPUNIT_TEST_SUITE( OwnPointerTest );
		CPPUNIT_TEST( testEmpty );
		CPPUNIT_TEST( testNewOwned );
		CPPUNIT_TEST( testClear );
		CPPUNIT_TEST( testSwap );
		CPPUNIT_TEST( testMoveCons );
		CPPUNIT_TEST( testMoveAss );
		CPPUNIT_TEST( testMakeShared );

		CPPUNIT_TEST( testOwnRaw );
		CPPUNIT_TEST( testOwnRawC2P );
		CPPUNIT_TEST( testOwnRawP2C );
		CPPUNIT_TEST( testOwnRawBad );

		CPPUNIT_TEST( testMoveConsCastC2P );
		CPPUNIT_TEST( testMoveConsCastP2C );
		CPPUNIT_TEST( testMoveConsCastBad );

		CPPUNIT_TEST( testMoveAssCastC2P );
		CPPUNIT_TEST( testMoveAssCastP2C );
		CPPUNIT_TEST( testMoveAssCastBad );
	CPPUNIT_TEST_SUITE_END( );

public:
	void tearDown( );

	void testEmpty( );
	void testNewOwned( );
	void testClear( );
	void testSwap( );
	void testMoveCons( );
	void testMoveAss( );
	void testMakeShared( );

	void testOwnRaw( );
	void testOwnRawC2P( );
	void testOwnRawP2C( );
	void testOwnRawBad( );

	void testMoveConsCastC2P( );
	void testMoveConsCastP2C( );
	void testMoveConsCastBad( );

	void testMoveAssCastC2P( );
	void testMoveAssCastP2C( );
	void testMoveAssCastBad( );
};
CPPUNIT_TEST_SUITE_REGISTRATION( OwnPointerTest );

/*----------------------------------------------------------------------------*/

#include "ptr-common.hh"

using Ptr = T_OwnPtr< T_Test >;

void OwnPointerTest::tearDown( )
{
	T_Test::dCalled = 0;
}

/*----------------------------------------------------------------------------*/

void OwnPointerTest::testEmpty( )
{
	{
		Ptr p;
		CPPUNIT_ASSERT( !p );
		CPPUNIT_ASSERT( p.get( ) == nullptr );
	}
	CPPUNIT_ASSERT( T_Test::dCalled == 0 );
}

void OwnPointerTest::testNewOwned( )
{
	{
		Ptr p( NewOwned< T_Test >( ) );
		CPPUNIT_ASSERT( bool( p ) );
		CPPUNIT_ASSERT( p.get( ) != nullptr );
		CPPUNIT_ASSERT( p->field == -1 );
	}
	CPPUNIT_ASSERT( T_Test::dCalled == 1 );
}

void OwnPointerTest::testClear( )
{
	Ptr p( NewOwned< T_Test >( ) );
	p.clear( );
	CPPUNIT_ASSERT( !p );
	CPPUNIT_ASSERT( p.get( ) == nullptr );
	CPPUNIT_ASSERT( T_Test::dCalled == 1 );
}

void OwnPointerTest::testSwap( )
{
	{
		Ptr p1( NewOwned< T_Test >( 123 ) );
		Ptr p2( NewOwned< T_Test >( 456 ) );
		swap( p1 , p2 );
		CPPUNIT_ASSERT( T_Test::dCalled == 0 );
		CPPUNIT_ASSERT( bool( p1 ) );
		CPPUNIT_ASSERT( p1->field == 456 );
		CPPUNIT_ASSERT( bool( p2 ) );
		CPPUNIT_ASSERT( p2->field == 123 );
	}
	CPPUNIT_ASSERT( T_Test::dCalled == 2 );
}

void OwnPointerTest::testMoveCons( )
{
	{
		Ptr p1( NewOwned< T_Test >( 123 ) );
		Ptr p2( std::move( p1 ) );
		CPPUNIT_ASSERT( T_Test::dCalled == 0 );
		CPPUNIT_ASSERT( !p1 );
		CPPUNIT_ASSERT( bool( p2 ) );
		CPPUNIT_ASSERT( p2->field == 123 );
	}
	CPPUNIT_ASSERT( T_Test::dCalled == 1 );
}

void OwnPointerTest::testMoveAss( )
{
	{
		Ptr p1( NewOwned< T_Test >( 123 ) );
		Ptr p2;
		p2 = std::move( p1 );
		CPPUNIT_ASSERT( T_Test::dCalled == 0 );
		CPPUNIT_ASSERT( !p1 );
		CPPUNIT_ASSERT( bool( p2 ) );
		CPPUNIT_ASSERT( p2->field == 123 );
	}
	CPPUNIT_ASSERT( T_Test::dCalled == 1 );
}

void OwnPointerTest::testMakeShared( )
{
	Ptr op( NewOwned< T_Test >( 123 ) );
	auto sp( op.makeShared( ) );
	CPPUNIT_ASSERT( !op );
	CPPUNIT_ASSERT( bool( sp ) );
	CPPUNIT_ASSERT( sp->field == 123 );
}

/*----------------------------------------------------------------------------*/

void OwnPointerTest::testOwnRaw( )
{
	{
		T_Test* obj( new T_Test( 123 ) );
		Ptr p( OwnRawPointer( obj ) );
		CPPUNIT_ASSERT( obj == nullptr );
		CPPUNIT_ASSERT( bool( p ) );
		CPPUNIT_ASSERT( p.get( ) != nullptr );
		CPPUNIT_ASSERT( p->field == 123 );
	}
	CPPUNIT_ASSERT( T_Test::dCalled == 1 );
}

void OwnPointerTest::testOwnRawC2P( )
{
	{
		T_TestChild* obj( new T_TestChild( ) );
		Ptr p( OwnRawPointer( obj ) );
		CPPUNIT_ASSERT( obj == nullptr );
		CPPUNIT_ASSERT( bool( p ) );
		CPPUNIT_ASSERT( p.get( ) != nullptr );
		CPPUNIT_ASSERT( p->field == 256 );
	}
	CPPUNIT_ASSERT( T_Test::dCalled == 1 );
}

void OwnPointerTest::testOwnRawP2C( )
{
	T_Test* obj( new T_TestChild( ) );
	T_OwnPtr< T_TestChild > p( OwnRawPointer< T_TestChild , T_Test >( obj ) );
	CPPUNIT_ASSERT( obj == nullptr );
	CPPUNIT_ASSERT( bool( p ) );
}

void OwnPointerTest::testOwnRawBad( )
{
	T_Test* obj( new T_OtherChild( 123 , 456 ) );
	try {
		T_OwnPtr< T_TestChild > p( OwnRawPointer< T_TestChild , T_Test >( obj ) );
		CPPUNIT_FAIL( "std::bad_cast not thrown" );
	} catch ( std::bad_cast const& ) {
		// OK
	}
	CPPUNIT_ASSERT( obj != nullptr );
	delete obj;
}

/*----------------------------------------------------------------------------*/

void OwnPointerTest::testMoveConsCastC2P( )
{
	{
		T_OwnPtr< T_TestChild > p1( NewOwned< T_TestChild >( ) );
		Ptr p2( std::move( p1 ) );
		CPPUNIT_ASSERT( T_Test::dCalled == 0 );
		CPPUNIT_ASSERT( !p1 );
		CPPUNIT_ASSERT( bool( p2 ) );
		CPPUNIT_ASSERT( p2->field == 256 );
	}
	CPPUNIT_ASSERT( T_Test::dCalled == 1 );
}

void OwnPointerTest::testMoveConsCastP2C( )
{
	{
		Ptr p1( NewOwned< T_TestChild >( ) );
		T_OwnPtr< T_TestChild > p2( std::move( p1 ) );
		CPPUNIT_ASSERT( T_Test::dCalled == 0 );
		CPPUNIT_ASSERT( !p1 );
		CPPUNIT_ASSERT( bool( p2 ) );
		CPPUNIT_ASSERT( p2->field == 256 );
	}
	CPPUNIT_ASSERT( T_Test::dCalled == 1 );
}

void OwnPointerTest::testMoveConsCastBad( )
{
	Ptr p1( NewOwned< T_OtherChild >( 123 , 456 ) );
	try {
		T_OwnPtr< T_TestChild > p2( std::move( p1 ) );
		CPPUNIT_FAIL( "exception not thrown" );
	} catch ( std::bad_cast const& ) {
		// OK
	}
}

/*----------------------------------------------------------------------------*/

void OwnPointerTest::testMoveAssCastC2P( )
{
	{
		T_OwnPtr< T_TestChild > p1( NewOwned< T_TestChild >( ) );
		Ptr p2;
		p2 = std::move( p1 );
		CPPUNIT_ASSERT( T_Test::dCalled == 0 );
		CPPUNIT_ASSERT( !p1 );
		CPPUNIT_ASSERT( bool( p2 ) );
		CPPUNIT_ASSERT( p2->field == 256 );
	}
	CPPUNIT_ASSERT( T_Test::dCalled == 1 );
}

void OwnPointerTest::testMoveAssCastP2C( )
{
	{
		Ptr p1( NewOwned< T_TestChild >( ) );
		T_OwnPtr< T_TestChild > p2;
		p2 = std::move( p1 );
		CPPUNIT_ASSERT( T_Test::dCalled == 0 );
		CPPUNIT_ASSERT( !p1 );
		CPPUNIT_ASSERT( bool( p2 ) );
		CPPUNIT_ASSERT( p2->field == 256 );
	}
	CPPUNIT_ASSERT( T_Test::dCalled == 1 );
}

void OwnPointerTest::testMoveAssCastBad( )
{
	try {
		Ptr p1( NewOwned< T_OtherChild >( 123 , 456 ) );
		T_OwnPtr< T_TestChild > p2;
		p2 = std::move( p1 );
		CPPUNIT_FAIL( "exception not thrown" );
	} catch ( std::bad_cast const& ) {
		// OK
	}
}