88 lines
2.5 KiB
C++
88 lines
2.5 KiB
C++
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/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the test suite of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtTest/QtTest>
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class tst_QRand: public QObject
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{
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Q_OBJECT
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private slots:
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void testqrand();
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};
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void tst_QRand::testqrand()
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{
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const int numTestValues = 100;
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int generatedNumbers[numTestValues];
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bool generatesSameSequence = true;
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// test without calling srand() first
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// should give same sequence as with srand(1)
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for (int i=0; i<numTestValues; ++i)
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generatedNumbers[i] = qrand();
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qsrand(1);
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for (int i=0; i<numTestValues; ++i)
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if (generatedNumbers[i] != qrand())
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generatesSameSequence = false;
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QVERIFY(generatesSameSequence);
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for (unsigned int seed=1; seed < 10; seed+=100) {
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qsrand(seed);
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for (int i=0; i<numTestValues; ++i)
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generatedNumbers[i] = qrand();
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qsrand(seed);
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generatesSameSequence = true;
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for (int i=0; i<numTestValues; ++i)
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if (generatedNumbers[i] != qrand())
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generatesSameSequence = false;
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QVERIFY(generatesSameSequence);
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}
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}
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QTEST_MAIN(tst_QRand)
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#include "tst_qrand.moc"
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