176 lines
4.7 KiB
C++
176 lines
4.7 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 <QtCore/QString>
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#include <QtCore/QTime>
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#include <QtCore/QElapsedTimer>
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#include <QtTest/QtTest>
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static const int minResolution = 50; // the minimum resolution for the tests
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QDebug operator<<(QDebug s, const QElapsedTimer &t)
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{
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union {
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QElapsedTimer t;
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struct { qint64 t1, t2; } i;
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} copy;
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copy.t = t;
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s.nospace() << "(" << copy.i.t1 << ", " << copy.i.t2 << ")";
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return s.space();
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}
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class tst_QElapsedTimer : public QObject
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{
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Q_OBJECT
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private Q_SLOTS:
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void statics();
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void validity();
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void basics();
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void elapsed();
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};
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void tst_QElapsedTimer::statics()
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{
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qDebug() << "Clock type is" << QElapsedTimer::clockType();
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qDebug() << "Said clock is" << (QElapsedTimer::isMonotonic() ? "monotonic" : "not monotonic");
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QElapsedTimer t;
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t.start();
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qDebug() << "Current time is" << t.msecsSinceReference();
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}
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void tst_QElapsedTimer::validity()
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{
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QElapsedTimer t;
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t.invalidate();
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QVERIFY(!t.isValid());
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t.start();
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QVERIFY(t.isValid());
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t.invalidate();
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QVERIFY(!t.isValid());
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}
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void tst_QElapsedTimer::basics()
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{
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QElapsedTimer t1;
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t1.start();
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QVERIFY(t1.msecsSinceReference() != 0);
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QCOMPARE(t1, t1);
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QVERIFY(!(t1 != t1));
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QVERIFY(!(t1 < t1));
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QCOMPARE(t1.msecsTo(t1), qint64(0));
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QCOMPARE(t1.secsTo(t1), qint64(0));
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// QCOMPARE(t1 + 0, t1);
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// QCOMPARE(t1 - 0, t1);
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#if 0
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QElapsedTimer t2 = t1;
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t2 += 1000; // so we can use secsTo
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QVERIFY(t1 != t2);
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QVERIFY(!(t1 == t2));
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QVERIFY(t1 < t2);
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QVERIFY(!(t2 < t1));
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QCOMPARE(t1.msecsTo(t2), qint64(1000));
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QCOMPARE(t1.secsTo(t2), qint64(1));
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// QCOMPARE(t2 - t1, qint64(1000));
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// QCOMPARE(t1 - t2, qint64(-1000));
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#endif
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quint64 value1 = t1.msecsSinceReference();
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qDebug() << value1 << t1;
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qint64 nsecs = t1.nsecsElapsed();
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qint64 elapsed = t1.restart();
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QVERIFY(elapsed < minResolution);
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QVERIFY(nsecs / 1000000 < minResolution);
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quint64 value2 = t1.msecsSinceReference();
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qDebug() << value2 << t1 << elapsed << nsecs;
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// in theory, elapsed == value2 - value1
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// However, since QElapsedTimer keeps internally the full resolution,
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// we have here a rounding error due to integer division
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QVERIFY(qAbs(elapsed - qint64(value2 - value1)) <= 1);
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}
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void tst_QElapsedTimer::elapsed()
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{
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QElapsedTimer t1;
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t1.start();
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QTest::qSleep(4*minResolution);
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QElapsedTimer t2;
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t2.start();
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QVERIFY(t1 != t2);
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QVERIFY(!(t1 == t2));
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QVERIFY(t1 < t2);
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QVERIFY(t1.msecsTo(t2) > 0);
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// don't check: t1.secsTo(t2)
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// QVERIFY(t1 - t2 < 0);
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QVERIFY(t1.nsecsElapsed() > 0);
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QVERIFY(t1.elapsed() > 0);
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// the number of elapsed nanoseconds and milliseconds should match
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QVERIFY(t1.nsecsElapsed() - t1.elapsed() * 1000000 < 1000000);
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QVERIFY(t1.hasExpired(minResolution));
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QVERIFY(!t1.hasExpired(8*minResolution));
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QVERIFY(!t2.hasExpired(minResolution));
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QVERIFY(!t1.hasExpired(-1));
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QVERIFY(!t2.hasExpired(-1));
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qint64 elapsed = t1.restart();
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QVERIFY(elapsed > 3*minResolution);
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QVERIFY(elapsed < 5*minResolution);
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qint64 diff = t2.msecsTo(t1);
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QVERIFY(diff < minResolution);
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}
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QTEST_MAIN(tst_QElapsedTimer);
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#include "tst_qelapsedtimer.moc"
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