--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/auto/qscrollbar/tst_qscrollbar.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,147 @@
+/****************************************************************************
+**
+** 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 <QScrollBar>
+#include <QStyleOptionSlider>
+#include <QScrollArea>
+
+class tst_QScrollBar : public QObject
+{
+    Q_OBJECT
+public slots:
+    void initTestCase();
+    void cleanupTestCase();
+    void hideAndShow(int action);
+
+private slots:
+    void scrollSingleStep();
+    void task_209492();
+
+private:
+    QScrollBar *testWidget;
+};
+
+void tst_QScrollBar::initTestCase()
+{
+    testWidget = new QScrollBar(Qt::Horizontal);
+    testWidget->resize(100, testWidget->height());
+    testWidget->show();
+}
+
+void tst_QScrollBar::cleanupTestCase()
+{
+    delete testWidget;
+    testWidget = 0;
+}
+
+void tst_QScrollBar::hideAndShow(int)
+{
+    testWidget->hide();
+    testWidget->show();
+}
+
+// Check that the scrollbar doesn't scroll after calling hide and show
+// from a slot connected to the scrollbar's actionTriggered signal.
+void tst_QScrollBar::scrollSingleStep()
+{
+    testWidget->setValue(testWidget->minimum());
+    QCOMPARE(testWidget->value(), testWidget->minimum());
+    connect(testWidget, SIGNAL(actionTriggered(int)), this, SLOT(hideAndShow(int)));
+
+    // Get rect for the area to click on
+    const QStyleOptionSlider opt = qt_qscrollbarStyleOption(testWidget);
+    QRect sr = testWidget->style()->subControlRect(QStyle::CC_ScrollBar, &opt,
+                                                   QStyle::SC_ScrollBarAddLine, testWidget);
+
+    if (!sr.isValid())
+        QSKIP("SC_ScrollBarAddLine not valid",  SkipAll);
+
+    QTest::mouseClick(testWidget, Qt::LeftButton, Qt::NoModifier, QPoint(sr.x(), sr.y()));
+    QTest::qWait(510); // initial delay is 500 for setRepeatAction
+    disconnect(testWidget, SIGNAL(actionTriggered(int)), 0, 0);
+    QCOMPARE(testWidget->value(), testWidget->singleStep());
+}
+
+void tst_QScrollBar::task_209492()
+{
+    class MyScrollArea : public QScrollArea
+    {
+    public:
+        int scrollCount;
+        MyScrollArea(QWidget *parent = 0) : QScrollArea(parent), scrollCount(0) {}
+    protected:
+        void paintEvent(QPaintEvent *) { QTest::qSleep(600); }
+        void scrollContentsBy(int, int) { ++scrollCount; viewport()->update(); }
+    };
+
+    MyScrollArea scrollArea;
+    QScrollBar *verticalScrollBar = scrollArea.verticalScrollBar();
+    verticalScrollBar->setRange(0, 1000);
+    scrollArea.show();
+    QTest::qWait(300);
+
+    QSignalSpy spy(verticalScrollBar, SIGNAL(actionTriggered(int)));
+    QCOMPARE(scrollArea.scrollCount, 0);
+    QCOMPARE(spy.count(), 0);
+
+    // Simulate a mouse click on the "scroll down button".
+    const QPoint pressPoint(verticalScrollBar->width() / 2, verticalScrollBar->height() - 10);
+    const QPoint globalPressPoint = verticalScrollBar->mapToGlobal(globalPressPoint);
+    QMouseEvent mousePressEvent(QEvent::MouseButtonPress, pressPoint, globalPressPoint,
+                                Qt::LeftButton, Qt::LeftButton, 0);
+    QApplication::sendEvent(verticalScrollBar, &mousePressEvent);
+    QTest::qWait(50);
+    QMouseEvent mouseReleaseEvent(QEvent::MouseButtonRelease, pressPoint, globalPressPoint,
+                                  Qt::LeftButton, Qt::LeftButton, 0);
+    QApplication::sendEvent(verticalScrollBar, &mouseReleaseEvent);
+
+    // Check that the action was triggered once.
+#ifdef Q_WS_MAC
+    QEXPECT_FAIL("", "Fix does does not work on Mac due to paint architechure differences.", Abort);
+#endif
+    QCOMPARE(scrollArea.scrollCount, 1);
+    QCOMPARE(spy.count(), 1);
+}
+
+QTEST_MAIN(tst_QScrollBar)
+#include "tst_qscrollbar.moc"