summaryrefslogtreecommitdiff
path: root/tests/auto/qeventloop/tst_qeventloop.cpp
blob: 3fec3a90dd115e8680dfb3fd9a43365dc4fffb8f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** 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 either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/


#include <QtTest/QtTest>


#include <qabstracteventdispatcher.h>
#include <qcoreapplication.h>
#include <qcoreevent.h>
#include <qeventloop.h>
#include <qmutex.h>
#include <qthread.h>
#include <qtimer.h>
#include <qwaitcondition.h>
#include <QTcpServer>
#include <QTcpSocket>

//TESTED_CLASS=
//TESTED_FILES=

class EventLoopExiter : public QObject
{
    Q_OBJECT
    QEventLoop *eventLoop;
public:
    inline EventLoopExiter(QEventLoop *el)
        : eventLoop(el)
    { }
public slots:
    void exit();
    void exit1();
    void exit2();
};

void EventLoopExiter::exit()
{ eventLoop->exit(); }

void EventLoopExiter::exit1()
{ eventLoop->exit(1); }

void EventLoopExiter::exit2()
{ eventLoop->exit(2); }

class EventLoopThread : public QThread
{
    Q_OBJECT
signals:
    void checkPoint();
public:
    QEventLoop *eventLoop;
    void run();
};

void EventLoopThread::run()
{
    eventLoop = new QEventLoop;
    emit checkPoint();
    (void) eventLoop->exec();
    delete eventLoop;
    eventLoop = 0;
}

class MultipleExecThread : public QThread
{
    Q_OBJECT
signals:
    void checkPoint();
public:
    QMutex mutex;
    QWaitCondition cond;
    void run()
    {
        QMutexLocker locker(&mutex);
        // this exec should work

        cond.wakeOne();
        cond.wait(&mutex);

        QTimer timer;
        connect(&timer, SIGNAL(timeout()), SLOT(quit()), Qt::DirectConnection);
        timer.setInterval(1000);
        timer.start();
        (void) exec();

        // this should return immediately, since exit() has been called
        cond.wakeOne();
        cond.wait(&mutex);
        QEventLoop eventLoop;
        (void) eventLoop.exec();
    }
};

class StartStopEvent: public QEvent
{
public:
    StartStopEvent(int type, QEventLoop *loop = 0)
        : QEvent(Type(type)), el(loop)
    { }

    QEventLoop *el;
};

class EventLoopExecutor : public QObject
{
    Q_OBJECT
    QEventLoop *eventLoop;
public:
    int returnCode;
    EventLoopExecutor(QEventLoop *eventLoop)
        : QObject(), eventLoop(eventLoop), returnCode(-42)
    {
    }
public slots:
    void exec()
    {
        QTimer::singleShot(100, eventLoop, SLOT(quit()));
        // this should return immediately, and the timer event should be delivered to
        // tst_QEventLoop::exec() test, letting the test complete
        returnCode = eventLoop->exec();
    }
};

#ifndef QT_NO_EXCEPTIONS
class QEventLoopTestException { };

class ExceptionThrower : public QObject
{
    Q_OBJECT
public:
    ExceptionThrower() : QObject() { }
public slots:
    void throwException()
    {
        QEventLoopTestException e;
        throw e;
    }
};
#endif

class tst_QEventLoop : public QObject
{
    Q_OBJECT
public:
    tst_QEventLoop();
    ~tst_QEventLoop();
public slots:
    void init();
    void cleanup();
private slots:
    void processEvents();
    void exec();
    void exit();
    void wakeUp();
    void quit();
    void processEventsExcludeSocket();
    void processEventsExcludeTimers();

    // keep this test last:
    void nestedLoops();

protected:
    void customEvent(QEvent *e);
};

tst_QEventLoop::tst_QEventLoop()
{ }

tst_QEventLoop::~tst_QEventLoop()
{ }

void tst_QEventLoop::init()
{ }

void tst_QEventLoop::cleanup()
{ }

void tst_QEventLoop::processEvents()
{
    QSignalSpy spy1(QAbstractEventDispatcher::instance(), SIGNAL(aboutToBlock()));
    QSignalSpy spy2(QAbstractEventDispatcher::instance(), SIGNAL(awake()));

    QEventLoop eventLoop;

    QCoreApplication::postEvent(&eventLoop, new QEvent(QEvent::User));

    // process posted events, QEventLoop::processEvents() should return
    // true
    QVERIFY(eventLoop.processEvents());
    QCOMPARE(spy1.count(), 0);
    QCOMPARE(spy2.count(), 1);

    // allow any session manager to complete its handshake, so that
    // there are no pending events left.
    while (eventLoop.processEvents())
        ;

    // On mac we get application started events at this point,
    // so process events one more time just to be sure.
    eventLoop.processEvents();

    // no events to process, QEventLoop::processEvents() should return
    // false
    spy1.clear();
    spy2.clear();
    QVERIFY(!eventLoop.processEvents());
    QCOMPARE(spy1.count(), 0);
    QCOMPARE(spy2.count(), 1);

    // make sure the test doesn't block forever
    int timerId = startTimer(100);

    // wait for more events to process, QEventLoop::processEvents()
    // should return true
    spy1.clear();
    spy2.clear();
    QVERIFY(eventLoop.processEvents(QEventLoop::WaitForMoreEvents));

    // Verify that the eventloop has blocked and woken up. Some eventloops
    // may block and wake up multiple times.
    QVERIFY(spy1.count() > 0);
    QVERIFY(spy2.count() > 0);
    // We should get one awake for each aboutToBlock, plus one awake when
    // processEvents is entered.
    QVERIFY(spy2.count() >= spy1.count());

    killTimer(timerId);
}

void tst_QEventLoop::exec()
{
    {
        QEventLoop eventLoop;
        EventLoopExiter exiter(&eventLoop);
        int returnCode;

        QTimer::singleShot(100, &exiter, SLOT(exit()));
        returnCode = eventLoop.exec();
        QCOMPARE(returnCode, 0);

        QTimer::singleShot(100, &exiter, SLOT(exit1()));
        returnCode = eventLoop.exec();
        QCOMPARE(returnCode, 1);

        QTimer::singleShot(100, &exiter, SLOT(exit2()));
        returnCode = eventLoop.exec();
        QCOMPARE(returnCode, 2);
    }

    {
        // calling exec() after exit()/quit() should return immediately
        MultipleExecThread thread;

        // start thread and wait for checkpoint
        thread.mutex.lock();
        thread.start();
        thread.cond.wait(&thread.mutex);

        // make sure the eventloop runs
        QSignalSpy spy(QAbstractEventDispatcher::instance(&thread), SIGNAL(awake()));
        thread.cond.wakeOne();
        thread.cond.wait(&thread.mutex);
        QVERIFY(spy.count() > 0);

        // exec should return immediately
        spy.clear();
        thread.cond.wakeOne();
        thread.mutex.unlock();
        thread.wait();
        QCOMPARE(spy.count(), 0);
    }

    {
        // a single instance of QEventLoop should not be allowed to recurse into exec()
        QEventLoop eventLoop;
        EventLoopExecutor executor(&eventLoop);

        QTimer::singleShot(100, &executor, SLOT(exec()));
        int returnCode = eventLoop.exec();
        QCOMPARE(returnCode, 0);
        QCOMPARE(executor.returnCode, -1);
    }

#if !defined(QT_NO_EXCEPTIONS) && !defined(Q_OS_WINCE_WM)
    // Windows Mobile cannot handle cross library exceptions
    // qobject.cpp will try to rethrow the exception after handling
    // which causes gwes.exe to crash
    {
        // QEventLoop::exec() is exception safe
        QEventLoop eventLoop;
        int caughtExceptions = 0;

        try {
            ExceptionThrower exceptionThrower;
            QTimer::singleShot(100, &exceptionThrower, SLOT(throwException()));
            (void) eventLoop.exec();
        } catch (...) {
            ++caughtExceptions;
        }
        try {
            ExceptionThrower exceptionThrower;
            QTimer::singleShot(100, &exceptionThrower, SLOT(throwException()));
            (void) eventLoop.exec();
        } catch (...) {
            ++caughtExceptions;
        }
        QCOMPARE(caughtExceptions, 2);
    }
#endif
}

void tst_QEventLoop::exit()
{ DEPENDS_ON(exec()); }

void tst_QEventLoop::wakeUp()
{
    EventLoopThread thread;
    QEventLoop eventLoop;
    connect(&thread, SIGNAL(checkPoint()), &eventLoop, SLOT(quit()));
    connect(&thread, SIGNAL(finished()), &eventLoop, SLOT(quit()));

    thread.start();
    (void) eventLoop.exec();

    QSignalSpy spy(QAbstractEventDispatcher::instance(&thread), SIGNAL(awake()));
    thread.eventLoop->wakeUp();

    // give the thread time to wake up
    QTimer::singleShot(1000, &eventLoop, SLOT(quit()));
    (void) eventLoop.exec();

    QVERIFY(spy.count() > 0);

    thread.quit();
    (void) eventLoop.exec();
}

void tst_QEventLoop::quit()
{
    QEventLoop eventLoop;
    int returnCode;

    QTimer::singleShot(100, &eventLoop, SLOT(quit()));
    returnCode = eventLoop.exec();
    QCOMPARE(returnCode, 0);
}


void tst_QEventLoop::nestedLoops()
{
    QCoreApplication::postEvent(this, new StartStopEvent(QEvent::User));
    QCoreApplication::postEvent(this, new StartStopEvent(QEvent::User));
    QCoreApplication::postEvent(this, new StartStopEvent(QEvent::User));

    // without the fix, this will *wedge* and never return
    QTest::qWait(1000);
}

void tst_QEventLoop::customEvent(QEvent *e)
{
    if (e->type() == QEvent::User) {
        QEventLoop loop;
        QCoreApplication::postEvent(this, new StartStopEvent(int(QEvent::User) + 1, &loop));
        loop.exec();
    } else {
        static_cast<StartStopEvent *>(e)->el->exit();
    }
}

class SocketEventsTester: public QObject
{
    Q_OBJECT
public:
    SocketEventsTester()
    {
        socket = 0;
        server = 0;
        dataArrived = false;
        testResult = false;
    }
    ~SocketEventsTester()
    {
        delete socket;
        delete server;
    }
    bool init()
    {
        bool ret = false;
        server = new QTcpServer();
        socket = new QTcpSocket();
        connect(server, SIGNAL(newConnection()), this, SLOT(sendHello()));
        connect(socket, SIGNAL(readyRead()), this, SLOT(sendAck()), Qt::DirectConnection);
        if((ret = server->listen(QHostAddress::LocalHost, 0))) {
            socket->connectToHost(server->serverAddress(), server->serverPort());
            socket->waitForConnected();
        }
        return ret;
    }

    QTcpSocket *socket;
    QTcpServer *server;
    bool dataArrived;
    bool testResult;
public slots:
    void sendAck()
    {
        dataArrived = true;
    }
    void sendHello()
    {
        char data[10] ="HELLO";
        qint64 size = sizeof(data);

        QTcpSocket *serverSocket = server->nextPendingConnection();
        serverSocket->write(data, size);
        serverSocket->flush();
        QCoreApplication::processEvents(QEventLoop::ExcludeSocketNotifiers);
        testResult = dataArrived;
        serverSocket->close();
        QThread::currentThread()->exit(0);
    }
};

class SocketTestThread : public QThread
{
    Q_OBJECT
public:
    SocketTestThread():QThread(0),testResult(false){};
    void run()
    {
        SocketEventsTester *tester = new SocketEventsTester();
        if (tester->init())
            exec();
        testResult = tester->testResult;
        delete tester;
    }
     bool testResult;
};

void tst_QEventLoop::processEventsExcludeSocket()
{
    SocketTestThread thread;
    thread.start();
    QVERIFY(thread.wait());
    QVERIFY(!thread.testResult);
}

class TimerReceiver : public QObject
{
public:
    int gotTimerEvent;

    TimerReceiver()
        : QObject(), gotTimerEvent(-1)
    { }

    void timerEvent(QTimerEvent *event)
    {
        gotTimerEvent = event->timerId();
    }
};

void tst_QEventLoop::processEventsExcludeTimers()
{
    TimerReceiver timerReceiver;
    int timerId = timerReceiver.startTimer(0);

    QEventLoop eventLoop;

    // normal process events will send timers
    eventLoop.processEvents();
    QCOMPARE(timerReceiver.gotTimerEvent, timerId);
    timerReceiver.gotTimerEvent = -1;

    // normal process events will send timers
    eventLoop.processEvents(QEventLoop::X11ExcludeTimers);
#ifndef Q_OS_UNIX
    QEXPECT_FAIL("", "X11ExcludeTimers only works on UN*X", Continue);
#endif
    QCOMPARE(timerReceiver.gotTimerEvent, -1);
    timerReceiver.gotTimerEvent = -1;

    // resume timer processing
    eventLoop.processEvents();
    QCOMPARE(timerReceiver.gotTimerEvent, timerId);
    timerReceiver.gotTimerEvent = -1;
}

QTEST_MAIN(tst_QEventLoop)
#include "tst_qeventloop.moc"































// previous test

#if 0

#include <qwidget.h>

#ifdef Q_WS_WIN
#include <windows.h>
#endif



//TESTED_CLASS=
//TESTED_FILES=

class EventHandlerWidget : public QWidget
{
public:
    EventHandlerWidget( QWidget* parent = 0, const char* name = 0 ) : QWidget( parent, name )
    {
        installEventFilter( this );
        recievedPaintEvent = FALSE;
        recievedMouseEvent = FALSE;
    }
    ~EventHandlerWidget() {}

    bool recievedPaintEvent;
    bool recievedMouseEvent;

protected:
    bool eventFilter( QObject* o, QEvent* e )
    {
        if ( e->type() == QEvent::Paint )
            recievedPaintEvent = TRUE;
        else if ( e->type() == QEvent::MouseButtonPress )
            recievedMouseEvent = TRUE;
        return QWidget::eventFilter( o, e );
    }
};

class InBetweenObject : public QObject
{
    Q_OBJECT
public:
    InBetweenObject(QObject *parent, QObject *child)
    : QObject(parent), childObject(child)
    {
        childObject->setParent(this);
        ++instanceCounter;
    }

    ~InBetweenObject()
    {
        --instanceCounter;
    }

    static int instanceCounter;

protected:
    void childEvent(QChildEvent *e)
    {
        if (e->removed() && e->child() == childObject) {
            deleteLater();
        }
    }

private:
    QObject *childObject;
};

class ObjectContainer : public QObject
{
public:
    ObjectContainer(QObject *parent = 0)
    : QObject(parent)
    {
    }

protected:
    void childEvent(QChildEvent *e)
    {
        if (e->inserted() && !::qobject_cast<InBetweenObject*>(e->child())) {
            InBetweenObject *inBetween = new InBetweenObject(this, e->child());
        }
    }
};

class tst_QEventLoop : public QObject
{
    Q_OBJECT
public:
    tst_QEventLoop();
    ~tst_QEventLoop();
public slots:
    void init();
    void cleanup();
private slots:
    void processEvents();
    void eventHandlerPostsEvent();
};

tst_QEventLoop::tst_QEventLoop()
{
}

tst_QEventLoop::~tst_QEventLoop()
{
}

void tst_QEventLoop::init()
{
}

void tst_QEventLoop::cleanup()
{
}


void tst_QEventLoop::processEvents()
{
    EventHandlerWidget *mainWidget = new EventHandlerWidget( 0 );
    mainWidget->show();
    qApp->setMainWidget( mainWidget );

#ifdef Q_WS_WIN
    QEventLoop* eventLoop = qApp->eventLoop();
    eventLoop->processEvents( QEventLoop::AllEvents );
    QVERIFY( !eventLoop->hasPendingEvents() );

    // Make sure the flag is cleared first
    mainWidget->recievedPaintEvent = FALSE;
#ifdef Q_WS_WIN
    InvalidateRect( mainWidget->winId(), 0, TRUE );
#endif
    QVERIFY( !mainWidget->recievedPaintEvent );
    eventLoop->processEvents( QEventLoop::AllEvents );
    QVERIFY( mainWidget->recievedPaintEvent );

#ifdef Q_WS_WIN
    // TODO: Hardcoded for now...
    LPARAM lParam = MAKELPARAM( 10, 10 );
    PostMessage( mainWidget->winId(), WM_LBUTTONDOWN, 0, lParam );
#endif

    mainWidget->recievedMouseEvent = FALSE;
    eventLoop->processEvents( QEventLoop::ExcludeUserInput );
    QVERIFY( !mainWidget->recievedMouseEvent );
#else
    QSKIP( "QEventLoop test is not implememented on X11 yet", SkipAll);
#endif
}

int InBetweenObject::instanceCounter = 0;

void tst_QEventLoop::eventHandlerPostsEvent()
{
    ObjectContainer container;

    QObject *object = new QObject(&container);
    qApp->processEvents();
    qApp->processEvents();

    QCOMPARE(InBetweenObject::instanceCounter, 1);

    object->deleteLater();

    qApp->processEvents();
    QCOMPARE(InBetweenObject::instanceCounter, 0);
};

QTEST_MAIN(tst_QEventLoop)
#include "tst_qeventloop.moc"

#endif