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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtTest/QtTest>
#include <QtCore/QSharedData>
/*!
\class tst_QExplicitlySharedDataPointer
\internal
\since 4.4
\brief Tests class QExplicitlySharedDataPointer.
*/
class tst_QExplicitlySharedDataPointer : public QObject
{
Q_OBJECT
private Q_SLOTS:
void pointerOperatorOnConst() const;
void pointerOperatorOnMutable() const;
void copyConstructor() const;
void clone() const;
void data() const;
void reset() const;
};
class MyClass : public QSharedData
{
public:
void mutating()
{
}
void notMutating() const
{
}
MyClass &operator=(const MyClass &)
{
return *this;
}
};
class Base : public QSharedData
{
public:
virtual ~Base() { }
virtual Base *clone() { return new Base(*this); }
virtual bool isBase() const { return true; }
};
class Derived : public Base
{
public:
virtual Base *clone() { return new Derived(*this); }
virtual bool isBase() const { return false; }
};
QT_BEGIN_NAMESPACE
template<> Base *QExplicitlySharedDataPointer<Base>::clone()
{
return d->clone();
}
QT_END_NAMESPACE
void tst_QExplicitlySharedDataPointer::pointerOperatorOnConst() const
{
/* Pointer itself is const. */
{
const QExplicitlySharedDataPointer<const MyClass> pointer(new MyClass());
pointer->notMutating();
}
/* Pointer itself is mutable. */
{
QExplicitlySharedDataPointer<const MyClass> pointer(new MyClass());
pointer->notMutating();
}
}
void tst_QExplicitlySharedDataPointer::pointerOperatorOnMutable() const
{
/* Pointer itself is const. */
{
const QExplicitlySharedDataPointer<MyClass> pointer(new MyClass());
pointer->notMutating();
pointer->mutating();
*pointer = MyClass();
}
/* Pointer itself is mutable. */
{
const QExplicitlySharedDataPointer<MyClass> pointer(new MyClass());
pointer->notMutating();
pointer->mutating();
*pointer = MyClass();
}
}
void tst_QExplicitlySharedDataPointer::copyConstructor() const
{
const QExplicitlySharedDataPointer<const MyClass> pointer(new MyClass());
const QExplicitlySharedDataPointer<const MyClass> copy(pointer);
}
void tst_QExplicitlySharedDataPointer::clone() const
{
/* holding a base element */
{
QExplicitlySharedDataPointer<Base> pointer(new Base);
QVERIFY(pointer->isBase());
QExplicitlySharedDataPointer<Base> copy(pointer);
pointer.detach();
QVERIFY(pointer->isBase());
}
/* holding a derived element */
{
QExplicitlySharedDataPointer<Base> pointer(new Derived);
QVERIFY(!pointer->isBase());
QExplicitlySharedDataPointer<Base> copy(pointer);
pointer.detach();
QVERIFY(!pointer->isBase());
}
}
void tst_QExplicitlySharedDataPointer::data() const
{
/* Check default value. */
{
QExplicitlySharedDataPointer<const MyClass> pointer;
QCOMPARE(pointer.data(), static_cast<const MyClass *>(0));
}
/* On const pointer. Must not mutate the pointer. */
{
const QExplicitlySharedDataPointer<const MyClass> pointer(new MyClass());
pointer.data();
/* Check that this cast is possible. */
static_cast<const MyClass *>(pointer.data());
}
/* On mutatable pointer. Must not mutate the pointer. */
{
QExplicitlySharedDataPointer<const MyClass> pointer(new MyClass());
pointer.data();
/* Check that this cast is possible. */
static_cast<const MyClass *>(pointer.data());
}
/* Must not mutate the pointer. */
{
const QExplicitlySharedDataPointer<MyClass> pointer(new MyClass());
pointer.data();
/* Check that these casts are possible. */
static_cast<MyClass *>(pointer.data());
static_cast<const MyClass *>(pointer.data());
}
/* Must not mutate the pointer. */
{
QExplicitlySharedDataPointer<MyClass> pointer(new MyClass());
pointer.data();
/* Check that these casts are possible. */
static_cast<MyClass *>(pointer.data());
static_cast<const MyClass *>(pointer.data());
}
}
void tst_QExplicitlySharedDataPointer::reset() const
{
/* Do reset on a single ref count. */
{
QExplicitlySharedDataPointer<MyClass> pointer(new MyClass());
QVERIFY(pointer.data() != 0);
pointer.reset();
QCOMPARE(pointer.data(), static_cast<MyClass *>(0));
}
/* Do reset on a default constructed object. */
{
QExplicitlySharedDataPointer<MyClass> pointer;
QCOMPARE(pointer.data(), static_cast<MyClass *>(0));
pointer.reset();
QCOMPARE(pointer.data(), static_cast<MyClass *>(0));
}
}
QTEST_MAIN(tst_QExplicitlySharedDataPointer)
#include "tst_qexplicitlyshareddatapointer.moc"
// vim: et:ts=4:sw=4:sts=4
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