Autotest: add QSharedPointer and QWeakPointer tests for QWidget too

I don't want to link the tst_qsharedpointer test to QtGui, so I
created a new test.

This is testing only the basic manipulations. In special, it's not
testing invalid constructs.

3 files changed, 155 insertions, 1 deletions

diff --git a/tests/auto/auto.pro b/tests/auto/auto.pro
index 2550dcd..c923dee 100644
--- a/tests/auto/auto.pro
+++ b/tests/auto/auto.pro
@@ -270,7 +270,8 @@ SUBDIRS += _networkselftest \
            qscriptenginedebugger \
            qscrollarea \
            qsemaphore \
-	   qsharedpointer \
+           qsharedpointer \
+           qsharedpointer_and_qwidget \
            qsequentialanimationgroup \
            qset \
            qsettings \
diff --git a/tests/auto/qsharedpointer_and_qwidget/qsharedpointer_and_qwidget.pro b/tests/auto/qsharedpointer_and_qwidget/qsharedpointer_and_qwidget.pro
new file mode 100644
index 0000000..db647a5
--- /dev/null
+++ b/tests/auto/qsharedpointer_and_qwidget/qsharedpointer_and_qwidget.pro
@@ -0,0 +1,3 @@
+load(qttest_p4)
+SOURCES += tst_qsharedpointer_and_qwidget.cpp
+DEFINES += SRCDIR=\\\"$$PWD/\\\"
diff --git a/tests/auto/qsharedpointer_and_qwidget/tst_qsharedpointer_and_qwidget.cpp b/tests/auto/qsharedpointer_and_qwidget/tst_qsharedpointer_and_qwidget.cpp
new file mode 100644
index 0000000..66727c2
--- /dev/null
+++ b/tests/auto/qsharedpointer_and_qwidget/tst_qsharedpointer_and_qwidget.cpp
@@ -0,0 +1,150 @@
+/****************************************************************************
+**
+** 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 <QtGui/QWidget>
+#include <QtGui/QPushButton>
+#include <QtTest/QtTest>
+
+namespace QtSharedPointer {
+    Q_CORE_EXPORT void internalSafetyCheckCleanCheck();
+}
+
+class tst_QSharedPointer_and_QWidget: public QObject
+{
+    Q_OBJECT
+private slots:
+    void weak_externalDelete();
+    void weak_parentDelete();
+    void weak_parentDelete_setParent();
+
+    void strong_weak();
+
+    void strong_sharedptrDelete();
+
+public slots:
+    void cleanup() { check(); }
+
+public:
+    inline void check()
+    {
+#ifdef QT_BUILD_INTERNAL
+        QtSharedPointer::internalSafetyCheckCleanCheck();
+#endif
+    }
+};
+
+void tst_QSharedPointer_and_QWidget::weak_externalDelete()
+{
+    QWidget *w = new QWidget;
+    QWeakPointer<QWidget> ptr = w;
+
+    QVERIFY(!ptr.isNull());
+
+    delete w;
+    QVERIFY(ptr.isNull());
+}
+
+void tst_QSharedPointer_and_QWidget::weak_parentDelete()
+{
+    QWidget *parent = new QWidget;
+    QWidget *w = new QWidget(parent);
+    QWeakPointer<QWidget> ptr = w;
+
+    QVERIFY(!ptr.isNull());
+
+    delete parent;
+    QVERIFY(ptr.isNull());
+}
+
+void tst_QSharedPointer_and_QWidget::weak_parentDelete_setParent()
+{
+    QWidget *parent = new QWidget;
+    QWidget *w = new QWidget;
+    QWeakPointer<QWidget> ptr = w;
+    w->setParent(parent);
+
+    QVERIFY(!ptr.isNull());
+
+    delete parent;
+    QVERIFY(ptr.isNull());
+}
+
+// -- mixed --
+
+void tst_QSharedPointer_and_QWidget::strong_weak()
+{
+    QSharedPointer<QWidget> ptr(new QWidget);
+    QWeakPointer<QWidget> weak = ptr.data();
+    QWeakPointer<QWidget> weak2 = ptr;
+
+    QVERIFY(!weak.isNull());
+    QVERIFY(!weak2.isNull());
+
+    ptr.clear(); // deletes
+
+    QVERIFY(weak.isNull());
+    QVERIFY(weak2.isNull());
+}
+
+
+// ---- strong management ----
+
+void tst_QSharedPointer_and_QWidget::strong_sharedptrDelete()
+{
+    QWidget *parent = new QWidget;
+    QSharedPointer<QWidget> ptr(new QWidget(parent));
+    QWeakPointer<QWidget> weak = ptr;
+    QPointer<QWidget> check = ptr.data();
+
+    QVERIFY(!check.isNull());
+    QVERIFY(!weak.isNull());
+
+    ptr.clear();  // deletes
+
+    QVERIFY(check.isNull());
+    QVERIFY(weak.isNull());
+
+    delete parent; // mustn't crash
+}
+
+QTEST_MAIN(tst_QSharedPointer_and_QWidget)
+
+#include "tst_qsharedpointer_and_qwidget.moc"