/****************************************************************************

**

** Copyright (C) 2010 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_QRand: public QObject

{

    Q_OBJECT

private slots:

    void testqrand();

};

void tst_QRand::testqrand()

{

    const int numTestValues = 100;

    int generatedNumbers[numTestValues];

    bool generatesSameSequence = true;

    // test without calling srand() first

    // should give same sequence as with srand(1)

    for (int i=0; i<numTestValues; ++i)

        generatedNumbers[i] = qrand();

    qsrand(1);

    for (int i=0; i<numTestValues; ++i)

        if (generatedNumbers[i] != qrand())

            generatesSameSequence = false;

    QVERIFY(generatesSameSequence);

    for (unsigned int seed=1; seed < 10; seed+=100) {

        qsrand(seed);

        for (int i=0; i<numTestValues; ++i)

            generatedNumbers[i] = qrand();

        qsrand(seed);

        generatesSameSequence = true;

        for (int i=0; i<numTestValues; ++i)

            if (generatedNumbers[i] != qrand())

                generatesSameSequence = false;

        QVERIFY(generatesSameSequence);

    }

}

QTEST_MAIN(tst_QRand)

#include "tst_qrand.moc"