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

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** This file is part of the test suite of the Qt Toolkit.

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

#include <QtTest/QtTest>

#include <qtimer.h>

#include <qthread.h>

#if defined Q_OS_UNIX

#include <unistd.h>

#endif

//TESTED_CLASS=

//TESTED_FILES=

class tst_QTimer : public QObject

{

    Q_OBJECT

public:

    tst_QTimer();

    virtual ~tst_QTimer();

public slots:

    void initTestCase();

    void cleanupTestCase();

    void init();

    void cleanup();

private slots:

    void zeroTimer();

    void singleShotTimeout();

    void timeout();

    void livelock_data();

    void livelock();

    void timerInfiniteRecursion_data();

    void timerInfiniteRecursion();

    void recurringTimer_data();

    void recurringTimer();

    void deleteLaterOnQTimer(); // long name, don't want to shadow QObject::deleteLater()

    void moveToThread();

    void restartedTimerFiresTooSoon();

    void timerFiresOnlyOncePerProcessEvents_data();

    void timerFiresOnlyOncePerProcessEvents();

    void timerIdPersistsAfterThreadExit();

    void cancelLongTimer();

};

class TimerHelper : public QObject

{

    Q_OBJECT

public:

    TimerHelper() : QObject(), count(0)

    {

    }

    int count;

public slots:

    void timeout();

};

void TimerHelper::timeout()

{

    ++count;

}

tst_QTimer::tst_QTimer()

{

}

tst_QTimer::~tst_QTimer()

{

}

void tst_QTimer::initTestCase()

{

}

void tst_QTimer::cleanupTestCase()

{

}

void tst_QTimer::init()

{

}

void tst_QTimer::cleanup()

{

}

void tst_QTimer::zeroTimer()

{

    TimerHelper helper;

    QTimer timer;

    timer.setInterval(0);

    timer.start();

    connect(&timer, SIGNAL(timeout()), &helper, SLOT(timeout()));

    QCoreApplication::processEvents();

    QCOMPARE(helper.count, 1);

}

void tst_QTimer::singleShotTimeout()

{

    TimerHelper helper;

    QTimer timer;

    timer.setSingleShot(true);

    connect(&timer, SIGNAL(timeout()), &helper, SLOT(timeout()));

    timer.start(100);

    QTest::qWait(500);

    QCOMPARE(helper.count, 1);

    QTest::qWait(500);

    QCOMPARE(helper.count, 1);

}

#if defined(Q_OS_SYMBIAN) && defined(Q_CC_NOKIAX86)

// Increase wait as emulator startup can cause unexpected delays

#define TIMEOUT_TIMEOUT 2000

#else

#define TIMEOUT_TIMEOUT 200

#endif

void tst_QTimer::timeout()

{

    TimerHelper helper;

    QTimer timer;

    connect(&timer, SIGNAL(timeout()), &helper, SLOT(timeout()));

    timer.start(100);

    QCOMPARE(helper.count, 0);

    QTest::qWait(TIMEOUT_TIMEOUT);

    QVERIFY(helper.count > 0);

    int oldCount = helper.count;

    QTest::qWait(TIMEOUT_TIMEOUT);

    QVERIFY(helper.count > oldCount);

}

void tst_QTimer::livelock_data()

{

    QTest::addColumn<int>("interval");

    QTest::newRow("zero timer") << 0;

    QTest::newRow("non-zero timer") << 1;

    QTest::newRow("longer than sleep") << 20;

}

/*!

 *

 * DO NOT "FIX" THIS TEST!  it is written like this for a reason, do

 * not *change it without first dicussing it with its maintainers.

 *

*/

class LiveLockTester : public QObject

{

public:

    LiveLockTester(int i)

        : interval(i),

          timeoutsForFirst(0), timeoutsForExtra(0), timeoutsForSecond(0),

          postEventAtRightTime(false)

    {

        firstTimerId = startTimer(interval);

        extraTimerId = startTimer(interval + 80);

        secondTimerId = -1; // started later

    }

    bool event(QEvent *e) {

        if (e->type() == 4002) {

            // got the posted event

            if (timeoutsForFirst == 1 && timeoutsForSecond == 0)

                postEventAtRightTime = true;

            return true;

        }

        return QObject::event(e);

    }

    void timerEvent(QTimerEvent *te) {

        if (te->timerId() == firstTimerId) {

            if (++timeoutsForFirst == 1) {

                killTimer(extraTimerId);

                extraTimerId = -1;

		QCoreApplication::postEvent(this, new QEvent(static_cast<QEvent::Type>(4002)));

                secondTimerId = startTimer(interval);

            }

        } else if (te->timerId() == secondTimerId) {

            ++timeoutsForSecond;

        } else if (te->timerId() == extraTimerId) {

            ++timeoutsForExtra;

        }

        // sleep for 2ms

        QTest::qSleep(2);

        killTimer(te->timerId());

    }

    const int interval;

    int firstTimerId;

    int secondTimerId;

    int extraTimerId;

    int timeoutsForFirst;

    int timeoutsForExtra;

    int timeoutsForSecond;

    bool postEventAtRightTime;

};

void tst_QTimer::livelock()

{

    /*

      New timers created in timer event handlers should not be sent

      until the next iteration of the eventloop.  Note: this test

      depends on the fact that we send posted events before timer

      events (since new posted events are not sent until the next

      iteration of the eventloop either).

    */

    QFETCH(int, interval);

    LiveLockTester tester(interval);

    QTest::qWait(180); // we have to use wait here, since we're testing timers with a non-zero timeout

    QCOMPARE(tester.timeoutsForFirst, 1);

    QCOMPARE(tester.timeoutsForExtra, 0);

    QCOMPARE(tester.timeoutsForSecond, 1);

#if defined(Q_OS_MAC)

    QEXPECT_FAIL("zero timer", "Posted events source are handled AFTER timers", Continue);

    QEXPECT_FAIL("non-zero timer", "Posted events source are handled AFTER timers", Continue);

#elif defined(Q_OS_UNIX) && !defined(Q_OS_SYMBIAN)

    QEXPECT_FAIL("zero timer", "", Continue);

    QEXPECT_FAIL("non-zero timer", "", Continue);

#elif defined(Q_OS_WIN) && !defined(Q_OS_WINCE)

	if (QSysInfo::WindowsVersion < QSysInfo::WV_XP)

		QEXPECT_FAIL("non-zero timer", "Multimedia timers are not available on Windows 2000", Continue);

#elif defined(Q_OS_WINCE)

	QEXPECT_FAIL("non-zero timer", "Windows CE devices often too slow", Continue);

#endif

    QVERIFY(tester.postEventAtRightTime);

}

class TimerInfiniteRecursionObject : public QObject

{

public:

    bool inTimerEvent;

    bool timerEventRecursed;

    int interval;

    TimerInfiniteRecursionObject(int interval)

        : inTimerEvent(false), timerEventRecursed(false), interval(interval)

    { }

    void timerEvent(QTimerEvent *timerEvent)

    {

        timerEventRecursed = inTimerEvent;

        if (timerEventRecursed) {

            // bug detected!

            return;

        }

        inTimerEvent = true;

        QEventLoop eventLoop;

        QTimer::singleShot(qMax(100, interval * 2), &eventLoop, SLOT(quit()));

        eventLoop.exec();

        inTimerEvent = false;

        killTimer(timerEvent->timerId());

    }

};

void tst_QTimer::timerInfiniteRecursion_data()

{

    QTest::addColumn<int>("interval");

    QTest::newRow("zero timer") << 0;

    QTest::newRow("non-zero timer") << 1;

    QTest::newRow("10ms timer") << 10;

    QTest::newRow("11ms timer") << 11;

    QTest::newRow("100ms timer") << 100;

    QTest::newRow("1s timer") << 1000;

}

void tst_QTimer::timerInfiniteRecursion()

{

    QFETCH(int, interval);

    TimerInfiniteRecursionObject object(interval);

    (void) object.startTimer(interval);

    QEventLoop eventLoop;

    QTimer::singleShot(qMax(100, interval * 2), &eventLoop, SLOT(quit()));

    eventLoop.exec();

    QVERIFY(!object.timerEventRecursed);

}

class RecurringTimerObject : public QObject

{

Q_OBJECT

public:

    int times;

    int target;

    bool recurse;

    RecurringTimerObject(int target)

        : times(0), target(target), recurse(false)

    { }

    void timerEvent(QTimerEvent *timerEvent)

    {

        if (++times == target) {

            killTimer(timerEvent->timerId());

            emit done();

        } if (recurse) {

            QEventLoop eventLoop;

            QTimer::singleShot(100, &eventLoop, SLOT(quit()));

            eventLoop.exec();

        }

    }

signals:

    void done();

};

void tst_QTimer::recurringTimer_data()

{

    QTest::addColumn<int>("interval");

    QTest::newRow("zero timer") << 0;

    QTest::newRow("non-zero timer") << 1;

}

void tst_QTimer::recurringTimer()

{

    const int target = 5;

    QFETCH(int, interval);

    {

        RecurringTimerObject object(target);

        QObject::connect(&object, SIGNAL(done()), &QTestEventLoop::instance(), SLOT(exitLoop()));

        (void) object.startTimer(interval);

        QTestEventLoop::instance().enterLoop(5);

        QCOMPARE(object.times, target);

    }

    {

        // make sure that eventloop recursion doesn't effect timer recurrance

        RecurringTimerObject object(target);

        object.recurse = true;

        QObject::connect(&object, SIGNAL(done()), &QTestEventLoop::instance(), SLOT(exitLoop()));

        (void) object.startTimer(interval);

        QTestEventLoop::instance().enterLoop(5);

        QCOMPARE(object.times, target);

    }

}

void tst_QTimer::deleteLaterOnQTimer()

{

    QTimer *timer = new QTimer;

    connect(timer, SIGNAL(timeout()), timer, SLOT(deleteLater()));

    connect(timer, SIGNAL(destroyed()), &QTestEventLoop::instance(), SLOT(exitLoop()));

    timer->setInterval(1);

    timer->setSingleShot(true);

    timer->start();

    QPointer<QTimer> pointer = timer;

    QTestEventLoop::instance().enterLoop(5);

    QVERIFY(pointer.isNull());

}

#if defined(Q_OS_SYMBIAN) && defined(Q_CC_NOKIAX86)

// Increase wait as emulator startup can cause unexpected delays

#define MOVETOTHREAD_TIMEOUT 200

#define MOVETOTHREAD_WAIT 5000

#else

#define MOVETOTHREAD_TIMEOUT 200

#define MOVETOTHREAD_WAIT 300

#endif

void tst_QTimer::moveToThread()

{

    QTimer ti1;

    QTimer ti2;

    ti1.start(MOVETOTHREAD_TIMEOUT);

    ti2.start(MOVETOTHREAD_TIMEOUT);

    QVERIFY((ti1.timerId() & 0xffffff) != (ti2.timerId() & 0xffffff));

    QThread tr;

    ti1.moveToThread(&tr);

    connect(&ti1,SIGNAL(timeout()), &tr, SLOT(quit()));

    tr.start();

    QTimer ti3;

    ti3.start(MOVETOTHREAD_TIMEOUT);

    QVERIFY((ti3.timerId() & 0xffffff) != (ti2.timerId() & 0xffffff));

    QVERIFY((ti3.timerId() & 0xffffff) != (ti1.timerId() & 0xffffff));

    QTest::qWait(MOVETOTHREAD_WAIT);

    QVERIFY(tr.wait());

    ti2.stop();

    QTimer ti4;

    ti4.start(MOVETOTHREAD_TIMEOUT);

    ti3.stop();

    ti2.start(MOVETOTHREAD_TIMEOUT);

    ti3.start(MOVETOTHREAD_TIMEOUT);

    QVERIFY((ti4.timerId() & 0xffffff) != (ti2.timerId() & 0xffffff));

    QVERIFY((ti3.timerId() & 0xffffff) != (ti2.timerId() & 0xffffff));

    QVERIFY((ti3.timerId() & 0xffffff) != (ti1.timerId() & 0xffffff));

}

class RestartedTimerFiresTooSoonObject : public QObject

{

    Q_OBJECT

public:

    QBasicTimer m_timer;

    int m_interval;

    QTime m_startedTime;

    QEventLoop eventLoop;

    inline RestartedTimerFiresTooSoonObject()

        : QObject(), m_interval(0)

    { }

    void timerFired()

    {

        static int interval = 1000;

        m_interval = interval;

        m_startedTime.start();

        m_timer.start(interval, this);

        // alternate between single-shot and 1 sec

        interval = interval ? 0 : 1000;

    }

    void timerEvent(QTimerEvent* ev)

    {

        if (ev->timerId() != m_timer.timerId())

            return;

        m_timer.stop();

        QTime now = QTime::currentTime();

        int elapsed = m_startedTime.elapsed();

        if (elapsed < m_interval / 2) {

            // severely too early!

            m_timer.stop();

            eventLoop.exit(-1);

            return;

        }

        timerFired();

        // don't do this forever

        static int count = 0;

        if (count++ > 20) {

            m_timer.stop();

            eventLoop.quit();

            return;

        }

    }

};

void tst_QTimer::restartedTimerFiresTooSoon()

{

    RestartedTimerFiresTooSoonObject object;

    object.timerFired();

    QVERIFY(object.eventLoop.exec() == 0);

}

class LongLastingSlotClass : public QObject

{

    Q_OBJECT

public:

    LongLastingSlotClass(QTimer *timer) : count(0), timer(timer) {}

public slots:

    void longLastingSlot()

    {

        // Don't use timers for this, because we are testing them.

        QTime time;

        time.start();

        while (time.elapsed() < 200) {