Initial import from the monolithic Qt.

This is the beginning of revision history for this module. If you
want to look at revision history older than this, please refer to the
Qt Git wiki for how to use Git history grafting. At the time of
writing, this wiki is located here:

http://qt.gitorious.org/qt/pages/GitIntroductionWithQt

If you have already performed the grafting and you don't see any
history beyond this commit, try running "git log" with the "--follow"
argument.

Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

3 files changed, 713 insertions, 0 deletions

diff --git a/tests/auto/qtabwidget/.gitignore b/tests/auto/qtabwidget/.gitignore
new file mode 100644
index 0000000000..d8f924a3df
--- /dev/null
+++ b/tests/auto/qtabwidget/.gitignore
@@ -0,0 +1 @@
+tst_qtabwidget
diff --git a/tests/auto/qtabwidget/qtabwidget.pro b/tests/auto/qtabwidget/qtabwidget.pro
new file mode 100644
index 0000000000..0c2fc66981
--- /dev/null
+++ b/tests/auto/qtabwidget/qtabwidget.pro
@@ -0,0 +1,11 @@
+load(qttest_p4)
+
+INCLUDEPATH += ../
+
+HEADERS +=  
+SOURCES += tst_qtabwidget.cpp
+contains(QT_CONFIG, qt3support): QT += qt3support
+
+win32:!wince*:LIBS += -luser32
+
+
diff --git a/tests/auto/qtabwidget/tst_qtabwidget.cpp b/tests/auto/qtabwidget/tst_qtabwidget.cpp
new file mode 100644
index 0000000000..252450cc71
--- /dev/null
+++ b/tests/auto/qtabwidget/tst_qtabwidget.cpp
@@ -0,0 +1,701 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 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 <qtabwidget.h>
+#include <qdebug.h>
+#include <qapplication.h>
+#include <qlabel.h>
+#include <QtGui/qboxlayout.h>
+
+//TESTED_CLASS=
+//TESTED_FILES=
+
+#if defined(Q_OS_WIN) && !defined(Q_OS_WINCE)
+#  include <qt_windows.h>
+#define Q_CHECK_PAINTEVENTS \
+    if (::SwitchDesktop(::GetThreadDesktop(::GetCurrentThreadId())) == 0) \
+        QSKIP("desktop is not visible, this test would fail", SkipSingle);
+#else
+#define Q_CHECK_PAINTEVENTS
+#endif
+#if defined(Q_WS_X11)
+#  include <private/qt_x11_p.h>
+#  include <qx11info_x11.h>
+#elif defined(Q_WS_QWS)
+# include <qwindowsystem_qws.h>
+#endif
+
+#ifndef Q_CHECK_PAINTEVENTS
+#define Q_CHECK_PAINTEVENTS
+#endif //Q_CHECK_PAINTEVENTS
+
+
+class QTabWidgetChild:public QTabWidget {
+  public:
+    QTabWidgetChild():tabCount(0) {
+        QVERIFY(tabBar() != NULL);
+        QWidget *w = new QWidget;
+        int index = addTab(w, "test");
+          QCOMPARE(tabCount, 1);
+          removeTab(index);
+          QCOMPARE(tabCount, 0);
+
+          // Test bad arguments
+          // This will assert, so don't do it :)
+          //setTabBar(NULL);
+    };
+
+  protected:
+    virtual void tabInserted(int /*index */ ) {
+        tabCount++;
+    };
+    virtual void tabRemoved(int /*index */ ) {
+        tabCount--;
+    };
+    int tabCount;
+};
+
+class tst_QTabWidget:public QObject {
+  Q_OBJECT
+  public:
+    tst_QTabWidget();
+
+  public slots:
+    void init();
+    void cleanup();
+  private slots:
+    void getSetCheck();
+    void testChild();
+    void addRemoveTab();
+    void tabPosition();
+    void tabEnabled();
+    void tabText();
+    void tabShape();
+    void tabTooltip();
+    void tabIcon();
+    void indexOf();
+    void currentWidget();
+    void currentIndex();
+    void cornerWidget();
+    void removeTab();
+    void clear();
+    void keyboardNavigation();
+    void paintEventCount();
+    void minimumSizeHint();
+    void heightForWidth_data();
+    void heightForWidth();
+
+  private:
+    int addPage();
+    void removePage(int index);
+    QTabWidget *tw;
+};
+
+// Testing get/set functions
+void tst_QTabWidget::getSetCheck()
+{
+    QTabWidget obj1;
+    QWidget *w1 = new QWidget;
+    QWidget *w2 = new QWidget;
+    QWidget *w3 = new QWidget;
+    QWidget *w4 = new QWidget;
+    QWidget *w5 = new QWidget;
+
+    obj1.addTab(w1, "Page 1");
+    obj1.addTab(w2, "Page 2");
+    obj1.addTab(w3, "Page 3");
+    obj1.addTab(w4, "Page 4");
+    obj1.addTab(w5, "Page 5");
+
+    // TabShape QTabWidget::tabShape()
+    // void QTabWidget::setTabShape(TabShape)
+    obj1.setTabShape(QTabWidget::TabShape(QTabWidget::Rounded));
+    QCOMPARE(QTabWidget::TabShape(QTabWidget::Rounded), obj1.tabShape());
+    obj1.setTabShape(QTabWidget::TabShape(QTabWidget::Triangular));
+    QCOMPARE(QTabWidget::TabShape(QTabWidget::Triangular), obj1.tabShape());
+
+    // int QTabWidget::currentIndex()
+    // void QTabWidget::setCurrentIndex(int)
+    obj1.setCurrentIndex(0);
+    QCOMPARE(0, obj1.currentIndex());
+    obj1.setCurrentIndex(INT_MIN);
+    QCOMPARE(0, obj1.currentIndex());
+    obj1.setCurrentIndex(INT_MAX);
+    QCOMPARE(0, obj1.currentIndex());
+    obj1.setCurrentIndex(4);
+    QCOMPARE(4, obj1.currentIndex());
+
+    // QWidget * QTabWidget::currentWidget()
+    // void QTabWidget::setCurrentWidget(QWidget *)
+    obj1.setCurrentWidget(w1);
+    QCOMPARE(w1, obj1.currentWidget());
+    obj1.setCurrentWidget(w5);
+    QCOMPARE(w5, obj1.currentWidget());
+    obj1.setCurrentWidget((QWidget *)0);
+    QCOMPARE(w5, obj1.currentWidget()); // current not changed
+}
+
+tst_QTabWidget::tst_QTabWidget()
+{
+}
+
+void tst_QTabWidget::init()
+{
+    tw = new QTabWidget(0);
+    QCOMPARE(tw->count(), 0);
+    QCOMPARE(tw->currentIndex(), -1);
+    QVERIFY(tw->currentWidget() == NULL);
+}
+
+void tst_QTabWidget::cleanup()
+{
+    delete tw;
+    tw = 0;
+}
+
+void tst_QTabWidget::testChild()
+{
+    QTabWidgetChild t;
+}
+
+#define LABEL "TEST"
+#define TIP "TIP"
+int tst_QTabWidget::addPage()
+{
+    QWidget *w = new QWidget();
+    return tw->addTab(w, LABEL);
+}
+
+void tst_QTabWidget::removePage(int index)
+{
+    QWidget *w = tw->widget(index);
+    tw->removeTab(index);
+    delete w;
+}
+
+/**
+ * Tests:
+ * addTab(...) which really calls -> insertTab(...)
+ * widget(...)
+ * removeTab(...);
+ * If this fails then many others probably will too.
+ */
+void tst_QTabWidget::addRemoveTab()
+{
+    // Test bad arguments
+    tw->addTab(NULL, LABEL);
+    QCOMPARE(tw->count(), 0);
+    tw->removeTab(-1);
+    QCOMPARE(tw->count(), 0);
+    QVERIFY(tw->widget(-1) == 0);
+
+    QWidget *w = new QWidget();
+    int index = tw->addTab(w, LABEL);
+    // return value
+    QCOMPARE(tw->indexOf(w), index);
+
+    QCOMPARE(tw->count(), 1);
+    QVERIFY(tw->widget(index) == w);
+    QCOMPARE(tw->tabText(index), QString(LABEL));
+
+    removePage(index);
+    QCOMPARE(tw->count(), 0);
+}
+
+void tst_QTabWidget::tabPosition()
+{
+    tw->setTabPosition(QTabWidget::North);
+    QCOMPARE(tw->tabPosition(), QTabWidget::North);
+    tw->setTabPosition(QTabWidget::South);
+    QCOMPARE(tw->tabPosition(), QTabWidget::South);
+    tw->setTabPosition(QTabWidget::East);
+    QCOMPARE(tw->tabPosition(), QTabWidget::East);
+    tw->setTabPosition(QTabWidget::West);
+    QCOMPARE(tw->tabPosition(), QTabWidget::West);
+}
+
+void tst_QTabWidget::tabEnabled()
+{
+    // Test bad arguments
+    QVERIFY(tw->isTabEnabled(-1) == false);
+    tw->setTabEnabled(-1, false);
+
+    int index = addPage();
+
+    tw->setTabEnabled(index, true);
+    QVERIFY(tw->isTabEnabled(index));
+    QVERIFY(tw->widget(index)->isEnabled());
+    tw->setTabEnabled(index, false);
+    QVERIFY(!tw->isTabEnabled(index));
+    QVERIFY(!tw->widget(index)->isEnabled());
+    tw->setTabEnabled(index, true);
+    QVERIFY(tw->isTabEnabled(index));
+    QVERIFY(tw->widget(index)->isEnabled());
+
+    removePage(index);
+}
+
+void tst_QTabWidget::tabText()
+{
+    // Test bad arguments
+    QCOMPARE(tw->tabText(-1), QString(""));
+    tw->setTabText(-1, LABEL);
+
+    int index = addPage();
+
+    tw->setTabText(index, "new");
+    QCOMPARE(tw->tabText(index), QString("new"));
+    tw->setTabText(index, LABEL);
+    QCOMPARE(tw->tabText(index), QString(LABEL));
+
+    removePage(index);
+}
+
+void tst_QTabWidget::tabShape()
+{
+    int index = addPage();
+
+    tw->setTabShape(QTabWidget::Rounded);
+    QCOMPARE(tw->tabShape(), QTabWidget::Rounded);
+    tw->setTabShape(QTabWidget::Triangular);
+    QCOMPARE(tw->tabShape(), QTabWidget::Triangular);
+    tw->setTabShape(QTabWidget::Rounded);
+    QCOMPARE(tw->tabShape(), QTabWidget::Rounded);
+
+    removePage(index);
+}
+
+void tst_QTabWidget::tabTooltip()
+{
+    // Test bad arguments
+    QCOMPARE(tw->tabToolTip(-1), QString(""));
+    tw->setTabText(-1, TIP);
+
+    int index = addPage();
+
+    tw->setTabToolTip(index, "tip");
+    QCOMPARE(tw->tabToolTip(index), QString("tip"));
+    tw->setTabToolTip(index, TIP);
+    QCOMPARE(tw->tabToolTip(index), QString(TIP));
+
+    removePage(index);
+}
+
+void tst_QTabWidget::tabIcon()
+{
+    // Test bad arguments
+    QVERIFY(tw->tabToolTip(-1).isNull());
+    tw->setTabIcon(-1, QIcon());
+
+    int index = addPage();
+
+    QIcon icon;
+    tw->setTabIcon(index, icon);
+    QVERIFY(tw->tabIcon(index).isNull());
+
+    removePage(index);
+}
+
+void tst_QTabWidget::indexOf()
+{
+    // Test bad arguments
+    QCOMPARE(tw->indexOf(NULL), -1);
+
+    int index = addPage();
+    QWidget *w = tw->widget(index);
+    QCOMPARE(tw->indexOf(w), index);
+
+    removePage(index);
+}
+
+void tst_QTabWidget::currentWidget()
+{
+    // Test bad arguments
+    tw->setCurrentWidget(NULL);
+    QVERIFY(tw->currentWidget() == NULL);
+
+    int index = addPage();
+    QWidget *w = tw->widget(index);
+    QVERIFY(tw->currentWidget() == w);
+    QCOMPARE(tw->currentIndex(), index);
+
+    tw->setCurrentWidget(NULL);
+    QVERIFY(tw->currentWidget() == w);
+    QCOMPARE(tw->currentIndex(), index);
+
+    int index2 = addPage();
+    QWidget *w2 = tw->widget(index2);
+    Q_UNUSED(w2);
+    QVERIFY(tw->currentWidget() == w);
+    QCOMPARE(tw->currentIndex(), index);
+
+    removePage(index2);
+    removePage(index);
+}
+
+/**
+ * setCurrentWidget(..) calls setCurrentIndex(..)
+ * currentChanged(..) SIGNAL
+ */
+void tst_QTabWidget::currentIndex()
+{
+    // Test bad arguments
+    QSignalSpy spy(tw, SIGNAL(currentChanged(int)));
+#ifdef QT3_SUPPORT
+    QSignalSpy spySupport(tw, SIGNAL(currentChanged(QWidget *)));
+#endif
+    QCOMPARE(tw->currentIndex(), -1);
+    tw->setCurrentIndex(-1);
+    QCOMPARE(tw->currentIndex(), -1);
+    QCOMPARE(spy.count(), 0);
+
+    int firstIndex = addPage();
+    tw->setCurrentIndex(firstIndex);
+    QCOMPARE(tw->currentIndex(), firstIndex);
+    QCOMPARE(spy.count(), 1);
+    QList<QVariant> arguments = spy.takeFirst();
+    QVERIFY(arguments.at(0).toInt() == firstIndex);
+#ifdef QT3_SUPPORT
+    QCOMPARE(spySupport.count(), 1);
+#endif
+    
+    int index = addPage();
+    QCOMPARE(tw->currentIndex(), firstIndex);
+    tw->setCurrentIndex(index);
+    QCOMPARE(tw->currentIndex(), index);
+    QCOMPARE(spy.count(), 1);
+    arguments = spy.takeFirst();
+    QVERIFY(arguments.at(0).toInt() == index);
+#ifdef QT3_SUPPORT
+    QCOMPARE(spySupport.count(), 2);
+#endif
+    
+    removePage(index);
+    QCOMPARE(tw->currentIndex(), firstIndex);
+    QCOMPARE(spy.count(), 1);
+    arguments = spy.takeFirst();
+    QVERIFY(arguments.at(0).toInt() == firstIndex);
+#ifdef QT3_SUPPORT
+    QCOMPARE(spySupport.count(), 3);
+#endif
+
+    removePage(firstIndex);
+    QCOMPARE(tw->currentIndex(), -1);
+    QCOMPARE(spy.count(), 1);
+    arguments = spy.takeFirst();
+    QVERIFY(arguments.at(0).toInt() == -1);
+#ifdef QT3_SUPPORT
+    QCOMPARE(spySupport.count(), 4);
+#endif
+
+}
+
+void tst_QTabWidget::cornerWidget()
+{
+    // Test bad arguments
+    tw->setCornerWidget(NULL, Qt::TopRightCorner);
+
+    QVERIFY(tw->cornerWidget(Qt::TopLeftCorner) == 0);
+    QVERIFY(tw->cornerWidget(Qt::TopRightCorner) == 0);
+    QVERIFY(tw->cornerWidget(Qt::BottomLeftCorner) == 0);
+    QVERIFY(tw->cornerWidget(Qt::BottomRightCorner) == 0);
+
+    QWidget *w = new QWidget(0);
+    tw->setCornerWidget(w, Qt::TopLeftCorner);
+    QCOMPARE(w->parent(), (QObject *)tw);
+    QVERIFY(tw->cornerWidget(Qt::TopLeftCorner) == w);
+    tw->setCornerWidget(w, Qt::TopRightCorner);
+    QVERIFY(tw->cornerWidget(Qt::TopRightCorner) == w);
+    tw->setCornerWidget(w, Qt::BottomLeftCorner);
+    QVERIFY(tw->cornerWidget(Qt::BottomLeftCorner) == w);
+    tw->setCornerWidget(w, Qt::BottomRightCorner);
+    QVERIFY(tw->cornerWidget(Qt::BottomRightCorner) == w);
+
+    tw->setCornerWidget(0, Qt::TopRightCorner);
+    QVERIFY(tw->cornerWidget(Qt::TopRightCorner) == 0);
+    QCOMPARE(w->isHidden(), true);
+}
+
+//test that the QTabWidget::count() is correct at the moment the currentChanged signal is emit
+class RemoveTabObject : public QObject
+{
+    Q_OBJECT
+    public:
+        RemoveTabObject(QTabWidget *_tw) : tw(_tw), count(-1) {
+            connect(tw, SIGNAL(currentChanged(int)), this, SLOT(currentChanged()));
+        }
+
+        QTabWidget *tw;
+        int count;
+    public slots:
+        void currentChanged() { count = tw->count(); }
+};
+
+void tst_QTabWidget::removeTab()
+{
+    tw->show();
+    QCOMPARE(tw->count(), 0);
+    RemoveTabObject ob(tw);
+    tw->addTab(new QLabel("1"), "1");
+    QCOMPARE(ob.count, 1);
+    tw->addTab(new QLabel("2"), "2");
+    tw->addTab(new QLabel("3"), "3");
+    tw->addTab(new QLabel("4"), "4");
+    tw->addTab(new QLabel("5"), "5");
+    QCOMPARE(ob.count, 1);
+    QCOMPARE(tw->count(), 5);
+    
+    tw->setCurrentIndex(4);
+    QCOMPARE(ob.count,5);
+    tw->removeTab(4);
+    QCOMPARE(ob.count, 4);
+    QCOMPARE(tw->count(), 4);
+    QCOMPARE(tw->currentIndex(), 3);
+
+    tw->setCurrentIndex(1);
+    tw->removeTab(1);
+    QCOMPARE(ob.count, 3);
+    QCOMPARE(tw->count(), 3);
+    QCOMPARE(tw->currentIndex(), 1);
+
+    delete tw->widget(1);
+    QCOMPARE(tw->count(), 2);
+    QCOMPARE(ob.count, 2);
+    QCOMPARE(tw->currentIndex(), 1);
+    delete tw->widget(1);
+    QCOMPARE(tw->count(), 1);
+    QCOMPARE(ob.count, 1);
+    tw->removeTab(0);
+    QCOMPARE(tw->count(), 0);
+    QCOMPARE(ob.count, 0);
+}
+
+void tst_QTabWidget::clear()
+{
+    tw->addTab(new QWidget, "1");
+    tw->addTab(new QWidget, "2");
+    tw->addTab(new QWidget, "3");
+    tw->addTab(new QWidget, "4");
+    tw->addTab(new QWidget, "5");
+    tw->setCurrentIndex(4);
+    tw->clear();
+    QCOMPARE(tw->count(), 0);
+    QCOMPARE(tw->currentIndex(), -1);
+}
+
+void tst_QTabWidget::keyboardNavigation()
+{
+    int firstIndex = addPage();
+    addPage();
+    addPage();
+    tw->setCurrentIndex(firstIndex);
+    QCOMPARE(tw->currentIndex(), firstIndex);
+
+    QTest::keyClick(tw, Qt::Key_Tab, Qt::ControlModifier);
+    QCOMPARE(tw->currentIndex(), 1);
+    QTest::keyClick(tw, Qt::Key_Tab, Qt::ControlModifier);
+    QCOMPARE(tw->currentIndex(), 2);
+    QTest::keyClick(tw, Qt::Key_Tab, Qt::ControlModifier);
+    QCOMPARE(tw->currentIndex(), 0);
+    tw->setTabEnabled(1, false);
+    QTest::keyClick(tw, Qt::Key_Tab, Qt::ControlModifier);
+    QCOMPARE(tw->currentIndex(), 2);
+
+    QTest::keyClick(tw, Qt::Key_Tab, Qt::ControlModifier | Qt::ShiftModifier);
+    QCOMPARE(tw->currentIndex(), 0);
+    QTest::keyClick(tw, Qt::Key_Tab, Qt::ControlModifier | Qt::ShiftModifier);
+    QCOMPARE(tw->currentIndex(), 2);
+    tw->setTabEnabled(1, true);
+    QTest::keyClick(tw, Qt::Key_Tab, Qt::ControlModifier | Qt::ShiftModifier);
+    QCOMPARE(tw->currentIndex(), 1);
+    QTest::keyClick(tw, Qt::Key_Tab, Qt::ControlModifier | Qt::ShiftModifier);
+    QCOMPARE(tw->currentIndex(), 0);
+    QTest::keyClick(tw, Qt::Key_Tab, Qt::ControlModifier | Qt::ShiftModifier);
+    QCOMPARE(tw->currentIndex(), 2);
+    QTest::keyClick(tw, Qt::Key_Tab, Qt::ControlModifier);
+    QCOMPARE(tw->currentIndex(), 0);
+
+    // Disable all and try to go to the next. It should not move anywhere, and more importantly
+    // it should not loop forever. (a naive "search for the first enabled tabbar") implementation
+    // might do that)
+    tw->setTabEnabled(0, false);
+    tw->setTabEnabled(1, false);
+    tw->setTabEnabled(2, false);
+    QTest::keyClick(tw, Qt::Key_Tab, Qt::ControlModifier);
+    // TODO: Disabling the current tab will move current tab to the next,
+    // but what if next tab is also disabled. We should look into this. 
+    QVERIFY(tw->currentIndex() < 3 && tw->currentIndex() >= 0);
+}
+
+class PaintCounter : public QWidget
+{
+public:
+    PaintCounter() :count(0) { setAttribute(Qt::WA_OpaquePaintEvent); }
+    int count;
+protected:
+    void paintEvent(QPaintEvent*) {
+        ++count;
+    }
+};
+
+
+void tst_QTabWidget::paintEventCount()
+{
+    Q_CHECK_PAINTEVENTS
+
+    PaintCounter *tab1 = new PaintCounter;
+    PaintCounter *tab2 = new PaintCounter;
+
+    tw->addTab(tab1, "one");
+    tw->addTab(tab2, "two");
+
+    QCOMPARE(tab1->count, 0);
+    QCOMPARE(tab2->count, 0);
+    QCOMPARE(tw->currentIndex(), 0);
+
+    tw->show();
+
+    QTest::qWait(1000);
+
+    // Mac, Windows and Windows CE get multiple repaints on the first show, so use those as a starting point.
+    static const int MaxInitialPaintCount =
+#if defined(Q_OS_WINCE)
+        4;
+#elif defined(Q_WS_WIN)
+        2;
+#elif defined(Q_WS_MAC)
+        5;
+#else
+        2;
+#endif
+    QVERIFY(tab1->count <= MaxInitialPaintCount);
+    QCOMPARE(tab2->count, 0);
+
+    const int initalPaintCount = tab1->count;
+
+    tw->setCurrentIndex(1);
+
+    QTest::qWait(100);
+
+    QCOMPARE(tab1->count, initalPaintCount);
+    QCOMPARE(tab2->count, 1);
+
+    tw->setCurrentIndex(0);
+
+    QTest::qWait(100);
+
+    QCOMPARE(tab1->count, initalPaintCount + 1);
+    QCOMPARE(tab2->count, 1);
+}
+
+void tst_QTabWidget::minimumSizeHint()
+{
+    QTabWidget tw;
+    QWidget *page = new QWidget;
+    QVBoxLayout *lay = new QVBoxLayout;
+
+    QLabel *label = new QLabel(QLatin1String("XXgypq lorem ipsum must be long, must be long. lorem ipsumMMMW"));
+    lay->addWidget(label);
+
+    page->setLayout(lay);
+
+    tw.addTab(page, QLatin1String("page1"));
+
+    tw.show();
+    QTest::qWaitForWindowShown(&tw);
+    tw.resize(tw.minimumSizeHint());
+
+    QSize minSize = label->minimumSizeHint();
+    QSize actSize = label->geometry().size();
+    QVERIFY(minSize.width() <= actSize.width());
+    QVERIFY(minSize.height() <= actSize.height());
+}
+
+void tst_QTabWidget::heightForWidth_data()
+{
+    QTest::addColumn<int>("tabPosition");
+    QTest::newRow("West") << int(QTabWidget::West);
+    QTest::newRow("North") << int(QTabWidget::North);
+    QTest::newRow("East") << int(QTabWidget::East);
+    QTest::newRow("South") << int(QTabWidget::South);
+}
+
+void tst_QTabWidget::heightForWidth()
+{
+    QFETCH(int, tabPosition);
+
+    QWidget *window = new QWidget;
+    QVBoxLayout *lay = new QVBoxLayout(window);
+    lay->setMargin(0);
+    lay->setSpacing(0);
+    QTabWidget *tabWid = new QTabWidget(window);
+    QWidget *w = new QWidget;
+    tabWid->addTab(w, QLatin1String("HFW page"));
+    tabWid->setTabPosition(QTabWidget::TabPosition(tabPosition));
+    QVBoxLayout *lay2 = new QVBoxLayout(w);
+    QLabel *label = new QLabel("Label with wordwrap turned on makes it trade height for width."
+                               " Make it a really long text so that it spans on several lines"
+                               " when the label is on its narrowest."
+                               " I don't like to repeat myself."
+                               " I don't like to repeat myself."
+                               " I don't like to repeat myself."
+                               " I don't like to repeat myself."
+                               );
+    label->setWordWrap(true);
+    lay2->addWidget(label);
+    lay2->setMargin(0);
+
+    lay->addWidget(tabWid);
+    int h = window->heightForWidth(160);
+    window->resize(160, h);
+    window->show();
+
+    QTest::qWaitForWindowShown(window);
+    QVERIFY(label->height() >= label->heightForWidth(label->width()));
+
+    delete window;
+}
+
+
+QTEST_MAIN(tst_QTabWidget)
+#include "tst_qtabwidget.moc"