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diff --git a/tests/auto/qflags/tst_qflags.cpp b/tests/auto/qflags/tst_qflags.cpp
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+++ b/tests/auto/qflags/tst_qflags.cpp
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+/****************************************************************************
+**
+** 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>
+
+class tst_QFlags: public QObject
+{
+    Q_OBJECT
+private slots:
+    void testFlag() const;
+    void testFlagZeroFlag() const;
+    void testFlagMultiBits() const;
+};
+
+void tst_QFlags::testFlag() const
+{
+    Qt::MouseButtons btn = Qt::LeftButton | Qt::RightButton;
+
+    QVERIFY(btn.testFlag(Qt::LeftButton));
+    QVERIFY(!btn.testFlag(Qt::MidButton));
+
+    btn = 0;
+    QVERIFY(!btn.testFlag(Qt::LeftButton));
+}
+
+void tst_QFlags::testFlagZeroFlag() const
+{
+    {
+        Qt::MouseButtons btn = Qt::LeftButton | Qt::RightButton;
+        /* Qt::NoButton has the value 0. */
+
+        QVERIFY(!btn.testFlag(Qt::NoButton));
+    }
+
+    {
+        /* A zero enum set should test true with zero. */
+        QVERIFY(Qt::MouseButtons().testFlag(Qt::NoButton));
+    }
+
+    {
+        Qt::MouseButtons btn = Qt::NoButton;
+        QVERIFY(btn.testFlag(Qt::NoButton));
+    }
+}
+
+void tst_QFlags::testFlagMultiBits() const
+{
+    /* Qt::Window is 0x00000001
+     * Qt::Dialog is 0x00000002 | Window
+     */
+    {
+        const Qt::WindowFlags onlyWindow(Qt::Window);
+        QVERIFY(!onlyWindow.testFlag(Qt::Dialog));
+    }
+
+    {
+        const Qt::WindowFlags hasDialog(Qt::Dialog);
+        QVERIFY(hasDialog.testFlag(Qt::Dialog));
+    }
+}
+
+QTEST_MAIN(tst_QFlags)
+#include "tst_qflags.moc"