kdelibs/kdecore/tests/cplusplustest.cpp
2014-12-23 22:30:14 +00:00

51 lines
1.6 KiB
C++

/* This file is part of the KDE libraries
Copyright (c) 1999 Waldo Bastian <bastian@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License version 2 as published by the Free Software Foundation.
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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <QtCore/QString>
#include <QtCore/QHash>
#include <stdio.h>
class A { qint64 foo; };
class B { qint64 bar; };
class C : public A, public B { qint64 foobar; };
QHash<QString,A*> dictA;
QHash<QString,B*> dictB;
int main(int, char *[])
{
// This test shows that different pointer values due to base class adjustment
// are not a problem.
C obj;
A *pA = &obj;
B *pB = &obj;
C *pC = &obj;
Q_ASSERT(pA == pC); // comparison is done using A*, so it works
Q_ASSERT(pB == pC); // comparison is done using B*, so it works
Q_ASSERT((void*)pA == (void*)pC);
Q_ASSERT((void*)pB != (void*)pC); // yes, it's a different pointer value!
dictA.insert("hello", pC);
dictB.insert("hello", pC);
Q_ASSERT(dictA["hello"] == pC);
Q_ASSERT(dictB["hello"] == pC);
Q_UNUSED(pA);
Q_UNUSED(pB);
}