| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the test suite of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:GPL-EXCEPT$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
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| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include <QtCore/QString> |
| #include <QtCore/QTime> |
| #include <QtCore/QElapsedTimer> |
| #include <QtTest/QtTest> |
| |
| static const int minResolution = 100; // the minimum resolution for the tests |
| |
| QDebug operator<<(QDebug s, const QElapsedTimer &t) |
| { |
| s.nospace() << "(" << t.msecsSinceReference() << ")"; |
| return s.space(); |
| } |
| |
| class tst_QElapsedTimer : public QObject |
| { |
| Q_OBJECT |
| |
| private Q_SLOTS: |
| void statics(); |
| void validity(); |
| void basics(); |
| void elapsed(); |
| }; |
| |
| void tst_QElapsedTimer::statics() |
| { |
| qDebug() << "Clock type is" << QElapsedTimer::clockType(); |
| qDebug() << "Said clock is" << (QElapsedTimer::isMonotonic() ? "monotonic" : "not monotonic"); |
| QElapsedTimer t; |
| t.start(); |
| qDebug() << "Current time is" << t.msecsSinceReference(); |
| } |
| |
| void tst_QElapsedTimer::validity() |
| { |
| QElapsedTimer t; |
| |
| QVERIFY(!t.isValid()); // non-POD now, it should always start invalid |
| |
| t.start(); |
| QVERIFY(t.isValid()); |
| |
| t.invalidate(); |
| QVERIFY(!t.isValid()); |
| } |
| |
| void tst_QElapsedTimer::basics() |
| { |
| QElapsedTimer t1; |
| t1.start(); |
| |
| QVERIFY(t1.msecsSinceReference() != 0); |
| |
| QCOMPARE(t1, t1); |
| QVERIFY(!(t1 != t1)); |
| QVERIFY(!(t1 < t1)); |
| QCOMPARE(t1.msecsTo(t1), qint64(0)); |
| QCOMPARE(t1.secsTo(t1), qint64(0)); |
| |
| quint64 value1 = t1.msecsSinceReference(); |
| qDebug() << "value1:" << value1 << "t1:" << t1; |
| qint64 nsecs = t1.nsecsElapsed(); |
| qint64 elapsed = t1.restart(); |
| QVERIFY(elapsed < minResolution); |
| QVERIFY(nsecs / 1000000 < minResolution); |
| |
| quint64 value2 = t1.msecsSinceReference(); |
| qDebug() << "value2:" << value2 << "t1:" << t1 |
| << "elapsed:" << elapsed << "nsecs:" << nsecs; |
| // in theory, elapsed == value2 - value1 |
| |
| // However, since QElapsedTimer keeps internally the full resolution, |
| // we have here a rounding error due to integer division |
| QVERIFY(qAbs(elapsed - qint64(value2 - value1)) <= 1); |
| } |
| |
| void tst_QElapsedTimer::elapsed() |
| { |
| QElapsedTimer t1; |
| t1.start(); |
| |
| QTest::qSleep(2*minResolution); |
| QElapsedTimer t2; |
| t2.start(); |
| |
| QVERIFY(t1 != t2); |
| QVERIFY(!(t1 == t2)); |
| QVERIFY(t1 < t2); |
| QVERIFY(t1.msecsTo(t2) > 0); |
| |
| QVERIFY(t1.nsecsElapsed() > 0); |
| QVERIFY(t1.elapsed() > 0); |
| // the number of elapsed nanoseconds and milliseconds should match |
| QVERIFY(t1.nsecsElapsed() - t1.elapsed() * 1000000 < 1000000); |
| QVERIFY(t1.hasExpired(minResolution)); |
| QVERIFY(!t1.hasExpired(8*minResolution)); |
| QVERIFY(!t2.hasExpired(minResolution)); |
| |
| QVERIFY(!t1.hasExpired(-1)); |
| QVERIFY(!t2.hasExpired(-1)); |
| |
| qint64 elapsed = t1.restart(); |
| QVERIFY(elapsed > minResolution); |
| QVERIFY(elapsed < 3*minResolution); |
| qint64 diff = t2.msecsTo(t1); |
| QVERIFY(diff < minResolution); |
| } |
| |
| QTEST_MAIN(tst_QElapsedTimer); |
| |
| #include "tst_qelapsedtimer.moc" |