--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/auto/qexplicitlyshareddatapointer/tst_qexplicitlyshareddatapointer.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,259 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#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;
+    void swap() 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));
+    }
+}
+
+void tst_QExplicitlySharedDataPointer::swap() const
+{
+    QExplicitlySharedDataPointer<MyClass> p1(0), p2(new MyClass());
+    QVERIFY(!p1.data());
+    QVERIFY(p2.data());
+
+    p1.swap(p2);
+    QVERIFY(p1.data());
+    QVERIFY(!p2.data());
+
+    p1.swap(p2);
+    QVERIFY(!p1.data());
+    QVERIFY(p2.data());
+
+    qSwap(p1, p2);
+    QVERIFY(p1.data());
+    QVERIFY(!p2.data());
+}
+
+QTEST_MAIN(tst_QExplicitlySharedDataPointer)
+
+#include "tst_qexplicitlyshareddatapointer.moc"
+// vim: et:ts=4:sw=4:sts=4