diff -r 06b8e2af4411 -r 6fbed849b4f4 qtmobility/tests/auto/qaudiooutput/tst_qaudiooutput.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qtmobility/tests/auto/qaudiooutput/tst_qaudiooutput.cpp	Wed Jun 23 19:08:38 2010 +0300
@@ -0,0 +1,917 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtTest/QtTest>
+#include <QtCore/qlocale.h>
+
+#include <qaudiooutput.h>
+#include <qaudiodeviceinfo.h>
+#include <qaudioformat.h>
+#include <qaudio.h>
+
+#include "wavheader.h"
+
+#define AUDIO_BUFFER 192000
+
+#if defined(Q_OS_SYMBIAN)
+#define SRCDIR ""
+#endif
+
+class tst_QAudioOutput : public QObject
+{
+    Q_OBJECT
+public:
+    tst_QAudioOutput(QObject* parent=0) : QObject(parent) {}
+
+private slots:
+    void initTestCase();
+
+    void format();
+    void invalidFormat();
+
+    void bufferSize();
+
+    void notifyInterval();
+    void disableNotifyInterval();
+
+    void stopWhileStopped();
+    void suspendWhileStopped();
+    void resumeWhileStopped();
+
+    void pull();
+    void pullSuspendResume();
+
+    void push();
+    void pushSuspendResume();
+    void pushUnderrun();
+
+    void cleanupTestCase();
+
+private:
+    QString formatToFileName(const QAudioFormat &format);
+    QString workingDir();
+    void createSineWaveData(const QAudioFormat &format, qint64 length, int frequency = 440);
+
+    QAudioDeviceInfo audioDevice;
+    QList<QAudioFormat> testFormats;
+    QList<QFile*> audioFiles;
+
+    QScopedPointer<QByteArray> m_byteArray;
+    QScopedPointer<QBuffer> m_buffer;
+};
+
+QString tst_QAudioOutput::formatToFileName(const QAudioFormat &format)
+{
+    const QString formatEndian = (format.byteOrder() == QAudioFormat::LittleEndian)
+        ?   QString("LE") : QString("BE");
+
+    const QString formatSigned = (format.sampleType() == QAudioFormat::SignedInt)
+        ?   QString("signed") : QString("unsigned");
+
+    return QString("%1_%2_%3_%4_%5")
+        .arg(format.frequency())
+        .arg(format.sampleSize())
+        .arg(formatSigned)
+        .arg(formatEndian)
+        .arg(format.channels());
+}
+
+
+QString tst_QAudioOutput::workingDir()
+{
+    QDir working(QString(SRCDIR));
+
+    if (working.exists())
+        return QString(SRCDIR);
+
+    return QDir::currentPath();
+}
+
+void tst_QAudioOutput::createSineWaveData(const QAudioFormat &format, qint64 length, int frequency)
+{
+    const int channelBytes = format.sampleSize() / 8;
+    const int sampleBytes = format.channels() * channelBytes;
+
+    Q_ASSERT(length % sampleBytes == 0);
+    Q_UNUSED(sampleBytes) // suppress warning in release builds
+
+    m_byteArray.reset(new QByteArray(length, 0));
+    unsigned char *ptr = reinterpret_cast<unsigned char *>(m_byteArray->data());
+    int sampleIndex = 0;
+
+    while (length) {
+        const qreal x = qSin(2 * M_PI * frequency * qreal(sampleIndex % format.frequency()) / format.frequency());
+        for (int i=0; i<format.channels(); ++i) {
+            if (format.sampleSize() == 8 && format.sampleType() == QAudioFormat::UnSignedInt) {
+                const quint8 value = static_cast<quint8>((1.0 + x) / 2 * 255);
+                *reinterpret_cast<quint8*>(ptr) = value;
+            } else if (format.sampleSize() == 8 && format.sampleType() == QAudioFormat::SignedInt) {
+                const qint8 value = static_cast<qint8>(x * 127);
+                *reinterpret_cast<quint8*>(ptr) = value;
+            } else if (format.sampleSize() == 16 && format.sampleType() == QAudioFormat::UnSignedInt) {
+                quint16 value = static_cast<quint16>((1.0 + x) / 2 * 65535);
+                if (format.byteOrder() == QAudioFormat::LittleEndian)
+                    qToLittleEndian<quint16>(value, ptr);
+                else
+                    qToBigEndian<quint16>(value, ptr);
+            } else if (format.sampleSize() == 16 && format.sampleType() == QAudioFormat::SignedInt) {
+                qint16 value = static_cast<qint16>(x * 32767);
+                if (format.byteOrder() == QAudioFormat::LittleEndian)
+                    qToLittleEndian<qint16>(value, ptr);
+                else
+                    qToBigEndian<qint16>(value, ptr);
+            }
+
+            ptr += channelBytes;
+            length -= channelBytes;
+        }
+        ++sampleIndex;
+    }
+
+    m_buffer.reset(new QBuffer(m_byteArray.data(), this));
+    Q_ASSERT(m_buffer->open(QIODevice::ReadOnly));
+}
+
+void tst_QAudioOutput::initTestCase()
+{
+    // Only perform tests if audio output device exists
+    const QList<QAudioDeviceInfo> devices =
+        QAudioDeviceInfo::availableDevices(QAudio::AudioOutput);
+    QVERIFY(devices.size() > 0);
+
+    audioDevice = QAudioDeviceInfo::defaultOutputDevice();
+
+
+    QAudioFormat format;
+
+    format.setCodec("audio/pcm");
+
+    if (audioDevice.isFormatSupported(audioDevice.preferredFormat()))
+        testFormats.append(audioDevice.preferredFormat());
+
+    // PCM 8000  mono S8
+    format.setFrequency(8000);
+    format.setSampleSize(8);
+    format.setSampleType(QAudioFormat::SignedInt);
+    format.setByteOrder(QAudioFormat::LittleEndian);
+    format.setChannels(1);
+    if (audioDevice.isFormatSupported(format))
+        testFormats.append(format);
+
+    // PCM 11025 mono S16LE
+    format.setFrequency(11025);
+    format.setSampleSize(16);
+    if (audioDevice.isFormatSupported(format))
+        testFormats.append(format);
+
+    // PCM 22050 mono S16LE
+    format.setFrequency(22050);
+    if (audioDevice.isFormatSupported(format))
+        testFormats.append(format);
+
+    // PCM 22050 stereo S16LE
+    format.setChannels(2);
+    if (audioDevice.isFormatSupported(format))
+        testFormats.append(format);
+
+    // PCM 44100 stereo S16LE
+    format.setFrequency(44100);
+    if (audioDevice.isFormatSupported(format))
+        testFormats.append(format);
+
+    // PCM 48000 stereo S16LE
+    format.setFrequency(48000);
+    if (audioDevice.isFormatSupported(format))
+        testFormats.append(format);
+
+    QVERIFY(testFormats.size());
+
+    foreach (format, testFormats) {
+        qint64 len = (format.frequency()*format.channels()*(format.sampleSize()/8)*2); // 2 seconds
+        createSineWaveData(format, len);
+        // Write generate sine wave data to file
+        QFile* file = new QFile(workingDir() + QString("generated") + formatToFileName(format) + QString(".wav"));
+        if (file->open(QIODevice::WriteOnly)) {
+            WavHeader wavHeader(format, len);
+            wavHeader.write(*file);
+            file->write(m_byteArray->data(), len);
+            file->close();
+            audioFiles.append(file);
+        }
+    }
+}
+
+void tst_QAudioOutput::format()
+{
+    QAudioOutput audioOutput(audioDevice.preferredFormat(), this);
+
+    QAudioFormat requested = audioDevice.preferredFormat();
+    QAudioFormat actual    = audioOutput.format();
+
+    QVERIFY2((requested.channels() == actual.channels()),
+            QString("channels: requested=%1, actual=%2").arg(requested.channels()).arg(actual.channels()).toLocal8Bit().constData());
+    QVERIFY2((requested.frequency() == actual.frequency()),
+            QString("frequency: requested=%1, actual=%2").arg(requested.frequency()).arg(actual.frequency()).toLocal8Bit().constData());
+    QVERIFY2((requested.sampleSize() == actual.sampleSize()),
+            QString("sampleSize: requested=%1, actual=%2").arg(requested.sampleSize()).arg(actual.sampleSize()).toLocal8Bit().constData());
+    QVERIFY2((requested.codec() == actual.codec()),
+            QString("codec: requested=%1, actual=%2").arg(requested.codec()).arg(actual.codec()).toLocal8Bit().constData());
+    QVERIFY2((requested.byteOrder() == actual.byteOrder()),
+            QString("byteOrder: requested=%1, actual=%2").arg(requested.byteOrder()).arg(actual.byteOrder()).toLocal8Bit().constData());
+    QVERIFY2((requested.sampleType() == actual.sampleType()),
+            QString("sampleType: requested=%1, actual=%2").arg(requested.sampleType()).arg(actual.sampleType()).toLocal8Bit().constData());
+}
+
+void tst_QAudioOutput::invalidFormat()
+{
+    QAudioFormat invalidFormat;
+    invalidFormat.setFrequency(0);
+
+    QVERIFY2(!audioDevice.isFormatSupported(invalidFormat),
+            "isFormatSupported() is returning true on an invalid format");
+
+    QAudioOutput audioOutput(invalidFormat, this);
+
+    // Check that we are in the default state before calling start
+    QVERIFY2((audioOutput.state() == QAudio::StoppedState), "state() was not set to StoppedState before start()");
+    QVERIFY2((audioOutput.error() == QAudio::NoError), "error() was not set to QAudio::NoError before start()");
+
+    audioOutput.start();
+
+    // Check that error is raised
+    QVERIFY2((audioOutput.error() == QAudio::OpenError),"error() was not set to QAudio::OpenError after start()");
+}
+
+void tst_QAudioOutput::bufferSize()
+{
+    QAudioOutput audioOutput(audioDevice.preferredFormat(), this);
+
+    QVERIFY2((audioOutput.error() == QAudio::NoError), "error() was not set to QAudio::NoError on creation");
+
+    audioOutput.setBufferSize(512);
+    QVERIFY2((audioOutput.error() == QAudio::NoError), "error() is not QAudio::NoError after setBufferSize(512)");
+    QVERIFY2((audioOutput.bufferSize() == 512),
+            QString("bufferSize: requested=512, actual=%2").arg(audioOutput.bufferSize()).toLocal8Bit().constData());
+
+    audioOutput.setBufferSize(4096);
+    QVERIFY2((audioOutput.error() == QAudio::NoError), "error() is not QAudio::NoError after setBufferSize(4096)");
+    QVERIFY2((audioOutput.bufferSize() == 4096),
+            QString("bufferSize: requested=4096, actual=%2").arg(audioOutput.bufferSize()).toLocal8Bit().constData());
+
+    audioOutput.setBufferSize(8192);
+    QVERIFY2((audioOutput.error() == QAudio::NoError), "error() is not QAudio::NoError after setBufferSize(8192)");
+    QVERIFY2((audioOutput.bufferSize() == 8192),
+            QString("bufferSize: requested=8192, actual=%2").arg(audioOutput.bufferSize()).toLocal8Bit().constData());
+}
+
+void tst_QAudioOutput::notifyInterval()
+{
+    QAudioOutput audioOutput(audioDevice.preferredFormat(), this);
+
+    QVERIFY2((audioOutput.error() == QAudio::NoError), "error() was not set to QAudio::NoError on creation");
+
+    audioOutput.setNotifyInterval(50);
+    QVERIFY2((audioOutput.error() == QAudio::NoError), "error() is not QAudio::NoError after setNotifyInterval(50)");
+    QVERIFY2((audioOutput.notifyInterval() == 50),
+            QString("notifyInterval: requested=50, actual=%2").arg(audioOutput.notifyInterval()).toLocal8Bit().constData());
+
+    audioOutput.setNotifyInterval(100);
+    QVERIFY2((audioOutput.error() == QAudio::NoError), "error() is not QAudio::NoError after setNotifyInterval(100)");
+    QVERIFY2((audioOutput.notifyInterval() == 100),
+            QString("notifyInterval: requested=100, actual=%2").arg(audioOutput.notifyInterval()).toLocal8Bit().constData());
+
+    audioOutput.setNotifyInterval(250);
+    QVERIFY2((audioOutput.error() == QAudio::NoError), "error() is not QAudio::NoError after setNotifyInterval(250)");
+    QVERIFY2((audioOutput.notifyInterval() == 250),
+            QString("notifyInterval: requested=250, actual=%2").arg(audioOutput.notifyInterval()).toLocal8Bit().constData());
+
+    audioOutput.setNotifyInterval(1000);
+    QVERIFY2((audioOutput.error() == QAudio::NoError), "error() is not QAudio::NoError after setNotifyInterval(1000)");
+    QVERIFY2((audioOutput.notifyInterval() == 1000),
+            QString("notifyInterval: requested=1000, actual=%2").arg(audioOutput.notifyInterval()).toLocal8Bit().constData());
+}
+
+void tst_QAudioOutput::disableNotifyInterval()
+{
+    // Sets an invalid notification interval (QAudioOutput::setNotifyInterval(0))
+    // Checks that
+    //  - No error is raised (QAudioOutput::error() returns QAudio::NoError)
+    //  - if <= 0, set to zero and disable notify signal
+
+    QAudioOutput audioOutput(audioDevice.preferredFormat(), this);
+
+    QVERIFY2((audioOutput.error() == QAudio::NoError), "error() was not set to QAudio::NoError on creation");
+
+    audioOutput.setNotifyInterval(0);
+    QVERIFY2((audioOutput.error() == QAudio::NoError), "error() is not QAudio::NoError after setNotifyInterval(0)");
+    QVERIFY2((audioOutput.notifyInterval() == 0),
+            "notifyInterval() is not zero after setNotifyInterval(0)");
+
+    audioOutput.setNotifyInterval(-1);
+    QVERIFY2((audioOutput.error() == QAudio::NoError), "error() is not QAudio::NoError after setNotifyInterval(-1)");
+    QVERIFY2((audioOutput.notifyInterval() == 0),
+            "notifyInterval() is not zero after setNotifyInterval(-1)");
+
+    //start and run to check if notify() is emitted
+    if (audioFiles.size() > 0) {
+        QAudioOutput audioOutputCheck(testFormats.at(0), this);
+        audioOutputCheck.setNotifyInterval(0);
+        QSignalSpy notifySignal(&audioOutputCheck, SIGNAL(notify()));
+        audioFiles.at(0)->open(QIODevice::ReadOnly);
+        audioOutputCheck.start(audioFiles.at(0));
+        QTest::qWait(3000); // 3 seconds should be plenty
+        audioOutputCheck.stop();
+        QVERIFY2((notifySignal.count() == 0),
+                QString("didn't disable notify interval: shouldn't have got any but got %1").arg(notifySignal.count()).toLocal8Bit().constData());
+        audioFiles.at(0)->close();
+    }
+}
+
+void tst_QAudioOutput::stopWhileStopped()
+{
+    // Calls QAudioOutput::stop() when object is already in StoppedState
+    // Checks that
+    //  - No state change occurs
+    //  - No error is raised (QAudioOutput::error() returns QAudio::NoError)
+
+    QAudioOutput audioOutput(audioDevice.preferredFormat(), this);
+
+    QVERIFY2((audioOutput.state() == QAudio::StoppedState), "state() was not set to StoppedState before start()");
+    QVERIFY2((audioOutput.error() == QAudio::NoError), "error() was not set to QAudio::NoError before start()");
+
+    QSignalSpy stateSignal(&audioOutput, SIGNAL(stateChanged(QAudio::State)));
+    audioOutput.stop();
+
+    // Check that no state transition occurred
+    QVERIFY2((stateSignal.count() == 0), "stop() while stopped is emitting a signal and it shouldn't");
+    QVERIFY2((audioOutput.error() == QAudio::NoError), "error() was not set to QAudio::NoError after stop()");
+}
+
+void tst_QAudioOutput::suspendWhileStopped()
+{
+    // Calls QAudioOutput::suspend() when object is already in StoppedState
+    // Checks that
+    //  - No state change occurs
+    //  - No error is raised (QAudioOutput::error() returns QAudio::NoError)
+
+    QAudioOutput audioOutput(audioDevice.preferredFormat(), this);
+
+    QVERIFY2((audioOutput.state() == QAudio::StoppedState), "state() was not set to StoppedState before start()");
+    QVERIFY2((audioOutput.error() == QAudio::NoError), "error() was not set to QAudio::NoError before start()");
+
+    QSignalSpy stateSignal(&audioOutput, SIGNAL(stateChanged(QAudio::State)));
+    audioOutput.suspend();
+
+    // Check that no state transition occurred
+    QVERIFY2((stateSignal.count() == 0), "stop() while suspended is emitting a signal and it shouldn't");
+    QVERIFY2((audioOutput.error() == QAudio::NoError), "error() was not set to QAudio::NoError after stop()");
+}
+
+void tst_QAudioOutput::resumeWhileStopped()
+{
+    // Calls QAudioOutput::resume() when object is already in StoppedState
+    // Checks that
+    //  - No state change occurs
+    //  - No error is raised (QAudioOutput::error() returns QAudio::NoError)
+
+    QAudioOutput audioOutput(audioDevice.preferredFormat(), this);
+
+    QVERIFY2((audioOutput.state() == QAudio::StoppedState), "state() was not set to StoppedState before start()");
+    QVERIFY2((audioOutput.error() == QAudio::NoError), "error() was not set to QAudio::NoError before start()");
+
+    QSignalSpy stateSignal(&audioOutput, SIGNAL(stateChanged(QAudio::State)));
+    audioOutput.resume();
+
+    // Check that no state transition occurred
+    QVERIFY2((stateSignal.count() == 0), "resume() while stopped is emitting a signal and it shouldn't");
+    QVERIFY2((audioOutput.error() == QAudio::NoError), "error() was not set to QAudio::NoError after resume()");
+}
+
+void tst_QAudioOutput::pull()
+{
+    for(int i=0; i<audioFiles.count(); i++) {
+        QAudioOutput audioOutput(testFormats.at(i), this);
+
+        audioOutput.setNotifyInterval(100);
+
+        QSignalSpy notifySignal(&audioOutput, SIGNAL(notify()));
+        QSignalSpy stateSignal(&audioOutput, SIGNAL(stateChanged(QAudio::State)));
+
+        // Check that we are in the default state before calling start
+        QVERIFY2((audioOutput.state() == QAudio::StoppedState), "state() was not set to StoppedState before start()");
+        QVERIFY2((audioOutput.error() == QAudio::NoError), "error() was not set to QAudio::NoError before start()");
+        QVERIFY2((audioOutput.elapsedUSecs() == qint64(0)),"elapsedUSecs() not zero on creation");
+
+        audioFiles.at(i)->close();
+        audioFiles.at(i)->open(QIODevice::ReadOnly);
+        audioFiles.at(i)->seek(WavHeader::headerLength());
+
+        audioOutput.start(audioFiles.at(i));
+
+        // Check that QAudioOutput immediately transitions to ActiveState
+        QVERIFY2((stateSignal.count() == 1),
+                QString("didn't emit signal on start(), got %1 signals instead").arg(stateSignal.count()).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.state() == QAudio::ActiveState), "didn't transition to ActiveState after start()");
+        QVERIFY2((audioOutput.error() == QAudio::NoError), "error state is not equal to QAudio::NoError after start()");
+        QVERIFY(audioOutput.periodSize() > 0);
+        stateSignal.clear();
+
+        // Check that 'elapsed' increases
+        QTest::qWait(40);
+        QVERIFY2((audioOutput.elapsedUSecs() > 0), "elapsedUSecs() is still zero after start()");
+
+        // Wait until playback finishes
+        QTest::qWait(3000); // 3 seconds should be plenty
+
+        QVERIFY2(audioFiles.at(i)->atEnd(), "didn't play to EOF");
+        QVERIFY2((stateSignal.count() == 1),
+            QString("didn't emit IdleState signal when at EOF, got %1 signals instead").arg(stateSignal.count()).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.state() == QAudio::IdleState), "didn't transitions to IdleState when at EOF");
+        stateSignal.clear();
+
+        qint64 processedUs = audioOutput.processedUSecs();
+
+        audioOutput.stop();
+        QTest::qWait(40);
+        QVERIFY2((stateSignal.count() == 1),
+            QString("didn't emit StoppedState signal after stop(), got %1 signals instead").arg(stateSignal.count()).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.state() == QAudio::StoppedState), "didn't transitions to StoppedState after stop()");
+
+        QVERIFY2((processedUs == 2000000),
+                QString("processedUSecs() doesn't equal file duration in us (%1)").arg(processedUs).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.error() == QAudio::NoError), "error() is not QAudio::NoError after stop()");
+        QVERIFY2((audioOutput.elapsedUSecs() == (qint64)0), "elapsedUSecs() not equal to zero in StoppedState");
+        QVERIFY2((notifySignal.count() > 15 && notifySignal.count() < 25),
+                QString("too many notify() signals emitted (%1)").arg(notifySignal.count()).toLocal8Bit().constData());
+
+        audioFiles.at(i)->close();
+    }
+}
+
+void tst_QAudioOutput::pullSuspendResume()
+{
+    for(int i=0; i<audioFiles.count(); i++) {
+        QAudioOutput audioOutput(testFormats.at(i), this);
+
+        audioOutput.setNotifyInterval(100);
+
+        QSignalSpy notifySignal(&audioOutput, SIGNAL(notify()));
+        QSignalSpy stateSignal(&audioOutput, SIGNAL(stateChanged(QAudio::State)));
+
+        // Check that we are in the default state before calling start
+        QVERIFY2((audioOutput.state() == QAudio::StoppedState), "state() was not set to StoppedState before start()");
+        QVERIFY2((audioOutput.error() == QAudio::NoError), "error() was not set to QAudio::NoError before start()");
+        QVERIFY2((audioOutput.elapsedUSecs() == qint64(0)),"elapsedUSecs() not zero on creation");
+
+        audioFiles.at(i)->close();
+        audioFiles.at(i)->open(QIODevice::ReadOnly);
+        audioFiles.at(i)->seek(WavHeader::headerLength());
+
+        audioOutput.start(audioFiles.at(i));
+
+        // Check that QAudioOutput immediately transitions to ActiveState
+        QVERIFY2((stateSignal.count() == 1),
+                QString("didn't emit signal on start(), got %1 signals instead").arg(stateSignal.count()).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.state() == QAudio::ActiveState), "didn't transition to ActiveState after start()");
+        QVERIFY2((audioOutput.error() == QAudio::NoError), "error state is not equal to QAudio::NoError after start()");
+        QVERIFY(audioOutput.periodSize() > 0);
+        stateSignal.clear();
+
+        // Wait for half of clip to play
+        QTest::qWait(1000);
+
+        audioOutput.suspend();
+
+        // Give backends running in separate threads a chance to suspend.
+        QTest::qWait(100);
+
+        QVERIFY2((stateSignal.count() == 1),
+                QString("didn't emit SuspendedState signal after suspend(), got %1 signals instead")
+                .arg(stateSignal.count()).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.state() == QAudio::SuspendedState), "didn't transition to SuspendedState after suspend()");
+        QVERIFY2((audioOutput.error() == QAudio::NoError), "error state is not equal to QAudio::NoError after suspend()");
+        stateSignal.clear();
+
+        // Check that only 'elapsed', and not 'processed' increases while suspended
+        qint64 elapsedUs = audioOutput.elapsedUSecs();
+        qint64 processedUs = audioOutput.processedUSecs();
+        QTest::qWait(1000);
+        QVERIFY(audioOutput.elapsedUSecs() > elapsedUs);
+        QVERIFY(audioOutput.processedUSecs() == processedUs);
+
+        audioOutput.resume();
+
+        // Give backends running in separate threads a chance to suspend.
+        QTest::qWait(100);
+
+        // Check that QAudioOutput immediately transitions to ActiveState
+        QVERIFY2((stateSignal.count() == 1),
+                QString("didn't emit signal after resume(), got %1 signals instead").arg(stateSignal.count()).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.state() == QAudio::ActiveState), "didn't transition to ActiveState after resume()");
+        QVERIFY2((audioOutput.error() == QAudio::NoError), "error state is not equal to QAudio::NoError after resume()");
+        stateSignal.clear();
+
+        // Wait until playback finishes
+        QTest::qWait(3000); // 3 seconds should be plenty
+
+        QVERIFY2(audioFiles.at(i)->atEnd(), "didn't play to EOF");
+        QVERIFY2((stateSignal.count() == 1),
+            QString("didn't emit IdleState signal when at EOF, got %1 signals instead").arg(stateSignal.count()).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.state() == QAudio::IdleState), "didn't transitions to IdleState when at EOF");
+        stateSignal.clear();
+
+        processedUs = audioOutput.processedUSecs();
+
+        audioOutput.stop();
+        QTest::qWait(40);
+        QVERIFY2((stateSignal.count() == 1),
+            QString("didn't emit StoppedState signal after stop(), got %1 signals instead").arg(stateSignal.count()).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.state() == QAudio::StoppedState), "didn't transitions to StoppedState after stop()");
+
+        QVERIFY2((processedUs == 2000000),
+                QString("processedUSecs() doesn't equal file duration in us (%1)").arg(processedUs).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.error() == QAudio::NoError), "error() is not QAudio::NoError after stop()");
+        QVERIFY2((audioOutput.elapsedUSecs() == (qint64)0), "elapsedUSecs() not equal to zero in StoppedState");
+
+        audioFiles.at(i)->close();
+    }
+}
+
+void tst_QAudioOutput::push()
+{
+    for(int i=0; i<audioFiles.count(); i++) {
+        QAudioOutput audioOutput(testFormats.at(i), this);
+
+        audioOutput.setNotifyInterval(100);
+
+        QSignalSpy notifySignal(&audioOutput, SIGNAL(notify()));
+        QSignalSpy stateSignal(&audioOutput, SIGNAL(stateChanged(QAudio::State)));
+
+        // Check that we are in the default state before calling start
+        QVERIFY2((audioOutput.state() == QAudio::StoppedState), "state() was not set to StoppedState before start()");
+        QVERIFY2((audioOutput.error() == QAudio::NoError), "error() was not set to QAudio::NoError before start()");
+        QVERIFY2((audioOutput.elapsedUSecs() == qint64(0)),"elapsedUSecs() not zero on creation");
+
+        audioFiles.at(i)->close();
+        audioFiles.at(i)->open(QIODevice::ReadOnly);
+        audioFiles.at(i)->seek(WavHeader::headerLength());
+
+        QIODevice* feed = audioOutput.start();
+
+        // Check that QAudioOutput immediately transitions to IdleState
+        QVERIFY2((stateSignal.count() == 1),
+                QString("didn't emit signal on start(), got %1 signals instead").arg(stateSignal.count()).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.state() == QAudio::IdleState), "didn't transition to IdleState after start()");
+        QVERIFY2((audioOutput.error() == QAudio::NoError), "error state is not equal to QAudio::NoError after start()");
+        QVERIFY(audioOutput.periodSize() > 0);
+        stateSignal.clear();
+
+        // Check that 'elapsed' increases
+        QTest::qWait(40);
+        QVERIFY2((audioOutput.elapsedUSecs() > 0), "elapsedUSecs() is still zero after start()");
+        QVERIFY2((audioOutput.processedUSecs() == qint64(0)), "processedUSecs() is not zero after start()");
+
+        qint64 written = 0;
+        bool firstBuffer = true;
+        char buffer[AUDIO_BUFFER];
+
+        while (written < audioFiles.at(i)->size()-WavHeader::headerLength()) {
+
+            if (audioOutput.bytesFree() > audioOutput.periodSize()) {
+                qint64 len = audioFiles.at(i)->read(buffer,audioOutput.periodSize());
+                written += feed->write(buffer, len);
+
+                if (firstBuffer) {
+                    // Check for transition to ActiveState when data is provided
+                    QVERIFY2((stateSignal.count() == 1),
+                            QString("didn't emit signal after receiving data, got %1 signals instead")
+                            .arg(stateSignal.count()).toLocal8Bit().constData());
+                    QVERIFY2((audioOutput.state() == QAudio::ActiveState), "didn't transition to ActiveState after receiving data");
+                    QVERIFY2((audioOutput.error() == QAudio::NoError), "error state is not equal to QAudio::NoError after receiving data");
+                    firstBuffer = false;
+                }
+            } else
+                QTest::qWait(20);
+        }
+        stateSignal.clear();
+
+        // Wait until playback finishes
+        QTest::qWait(3000); // 3 seconds should be plenty
+
+        QVERIFY2(audioFiles.at(i)->atEnd(), "didn't play to EOF");
+        QVERIFY2((stateSignal.count() == 1),
+            QString("didn't emit IdleState signal when at EOF, got %1 signals instead").arg(stateSignal.count()).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.state() == QAudio::IdleState), "didn't transitions to IdleState when at EOF");
+        stateSignal.clear();
+
+        qint64 processedUs = audioOutput.processedUSecs();
+
+        audioOutput.stop();
+        QTest::qWait(40);
+        QVERIFY2((stateSignal.count() == 1),
+            QString("didn't emit StoppedState signal after stop(), got %1 signals instead").arg(stateSignal.count()).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.state() == QAudio::StoppedState), "didn't transitions to StoppedState after stop()");
+
+        QVERIFY2((processedUs == 2000000),
+                QString("processedUSecs() doesn't equal file duration in us (%1)").arg(processedUs).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.error() == QAudio::NoError), "error() is not QAudio::NoError after stop()");
+        QVERIFY2((audioOutput.elapsedUSecs() == (qint64)0), "elapsedUSecs() not equal to zero in StoppedState");
+        QVERIFY2((notifySignal.count() > 15 && notifySignal.count() < 25),
+                QString("too many notify() signals emitted (%1)").arg(notifySignal.count()).toLocal8Bit().constData());
+
+        audioFiles.at(i)->close();
+    }
+}
+
+void tst_QAudioOutput::pushSuspendResume()
+{
+    for(int i=0; i<audioFiles.count(); i++) {
+        QAudioOutput audioOutput(testFormats.at(i), this);
+
+        audioOutput.setNotifyInterval(100);
+
+        QSignalSpy notifySignal(&audioOutput, SIGNAL(notify()));
+        QSignalSpy stateSignal(&audioOutput, SIGNAL(stateChanged(QAudio::State)));
+
+        // Check that we are in the default state before calling start
+        QVERIFY2((audioOutput.state() == QAudio::StoppedState), "state() was not set to StoppedState before start()");
+        QVERIFY2((audioOutput.error() == QAudio::NoError), "error() was not set to QAudio::NoError before start()");
+        QVERIFY2((audioOutput.elapsedUSecs() == qint64(0)),"elapsedUSecs() not zero on creation");
+
+        audioFiles.at(i)->close();
+        audioFiles.at(i)->open(QIODevice::ReadOnly);
+        audioFiles.at(i)->seek(WavHeader::headerLength());
+
+        QIODevice* feed = audioOutput.start();
+
+        // Check that QAudioOutput immediately transitions to IdleState
+        QVERIFY2((stateSignal.count() == 1),
+                QString("didn't emit signal on start(), got %1 signals instead").arg(stateSignal.count()).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.state() == QAudio::IdleState), "didn't transition to IdleState after start()");
+        QVERIFY2((audioOutput.error() == QAudio::NoError), "error state is not equal to QAudio::NoError after start()");
+        QVERIFY(audioOutput.periodSize() > 0);
+        stateSignal.clear();
+
+        // Check that 'elapsed' increases
+        QTest::qWait(40);
+        QVERIFY2((audioOutput.elapsedUSecs() > 0), "elapsedUSecs() is still zero after start()");
+        QVERIFY2((audioOutput.processedUSecs() == qint64(0)), "processedUSecs() is not zero after start()");
+
+        qint64 written = 0;
+        bool firstBuffer = true;
+        char buffer[AUDIO_BUFFER];
+
+        // Play half of the clip
+        while (written < (audioFiles.at(i)->size()-WavHeader::headerLength())/2) {
+
+            if (audioOutput.bytesFree() > audioOutput.periodSize()) {
+                qint64 len = audioFiles.at(i)->read(buffer,audioOutput.periodSize());
+                written += feed->write(buffer, len);
+
+                if (firstBuffer) {
+                    // Check for transition to ActiveState when data is provided
+                    QVERIFY2((stateSignal.count() == 1),
+                            QString("didn't emit signal after receiving data, got %1 signals instead")
+                            .arg(stateSignal.count()).toLocal8Bit().constData());
+                    QVERIFY2((audioOutput.state() == QAudio::ActiveState), "didn't transition to ActiveState after receiving data");
+                    QVERIFY2((audioOutput.error() == QAudio::NoError), "error state is not equal to QAudio::NoError after receiving data");
+                    firstBuffer = false;
+                }
+            } else
+                QTest::qWait(20);
+        }
+        stateSignal.clear();
+
+        audioOutput.suspend();
+
+        // Give backends running in separate threads a chance to suspend.
+        QTest::qWait(100);
+
+        QVERIFY2((stateSignal.count() == 1),
+                QString("didn't emit SuspendedState signal after suspend(), got %1 signals instead")
+                .arg(stateSignal.count()).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.state() == QAudio::SuspendedState), "didn't transition to SuspendedState after suspend()");
+        QVERIFY2((audioOutput.error() == QAudio::NoError), "error state is not equal to QAudio::NoError after suspend()");
+        stateSignal.clear();
+
+        // Check that only 'elapsed', and not 'processed' increases while suspended
+        qint64 elapsedUs = audioOutput.elapsedUSecs();
+        qint64 processedUs = audioOutput.processedUSecs();
+        QTest::qWait(1000);
+        QVERIFY(audioOutput.elapsedUSecs() > elapsedUs);
+        QVERIFY(audioOutput.processedUSecs() == processedUs);
+
+        audioOutput.resume();
+
+        // Give backends running in separate threads a chance to suspend.
+        QTest::qWait(100);
+
+        // Check that QAudioOutput immediately transitions to ActiveState
+        QVERIFY2((stateSignal.count() == 1),
+                QString("didn't emit signal after resume(), got %1 signals instead").arg(stateSignal.count()).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.state() == QAudio::ActiveState), "didn't transition to ActiveState after resume()");
+        QVERIFY2((audioOutput.error() == QAudio::NoError), "error state is not equal to QAudio::NoError after resume()");
+        stateSignal.clear();
+
+        // Play rest of the clip
+        while (!audioFiles.at(i)->atEnd()) {
+            if (audioOutput.bytesFree() >= audioOutput.periodSize()) {
+                qint64 len = audioFiles.at(i)->read(buffer,audioOutput.periodSize());
+                written += feed->write(buffer, len);
+            } else
+                QTest::qWait(20);
+        }
+        stateSignal.clear();
+
+        // Wait until playback finishes
+        QTest::qWait(1000); // 1 seconds should be plenty
+
+        QVERIFY2(audioFiles.at(i)->atEnd(), "didn't play to EOF");
+        QVERIFY2((stateSignal.count() == 1),
+            QString("didn't emit IdleState signal when at EOF, got %1 signals instead").arg(stateSignal.count()).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.state() == QAudio::IdleState), "didn't transitions to IdleState when at EOF");
+        stateSignal.clear();
+
+        processedUs = audioOutput.processedUSecs();
+
+        audioOutput.stop();
+        QTest::qWait(40);
+        QVERIFY2((stateSignal.count() == 1),
+            QString("didn't emit StoppedState signal after stop(), got %1 signals instead").arg(stateSignal.count()).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.state() == QAudio::StoppedState), "didn't transitions to StoppedState after stop()");
+
+        QVERIFY2((processedUs == 2000000),
+                QString("processedUSecs() doesn't equal file duration in us (%1)").arg(processedUs).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.error() == QAudio::NoError), "error() is not QAudio::NoError after stop()");
+        QVERIFY2((audioOutput.elapsedUSecs() == (qint64)0), "elapsedUSecs() not equal to zero in StoppedState");
+
+        audioFiles.at(i)->close();
+    }
+}
+
+void tst_QAudioOutput::pushUnderrun()
+{
+    for(int i=0; i<audioFiles.count(); i++) {
+        QAudioOutput audioOutput(testFormats.at(i), this);
+
+        audioOutput.setNotifyInterval(100);
+
+        QSignalSpy notifySignal(&audioOutput, SIGNAL(notify()));
+        QSignalSpy stateSignal(&audioOutput, SIGNAL(stateChanged(QAudio::State)));
+
+        // Check that we are in the default state before calling start
+        QVERIFY2((audioOutput.state() == QAudio::StoppedState), "state() was not set to StoppedState before start()");
+        QVERIFY2((audioOutput.error() == QAudio::NoError), "error() was not set to QAudio::NoError before start()");
+        QVERIFY2((audioOutput.elapsedUSecs() == qint64(0)),"elapsedUSecs() not zero on creation");
+
+        audioFiles.at(i)->close();
+        audioFiles.at(i)->open(QIODevice::ReadOnly);
+        audioFiles.at(i)->seek(WavHeader::headerLength());
+
+        QIODevice* feed = audioOutput.start();
+
+        // Check that QAudioOutput immediately transitions to IdleState
+        QVERIFY2((stateSignal.count() == 1),
+                QString("didn't emit signal on start(), got %1 signals instead").arg(stateSignal.count()).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.state() == QAudio::IdleState), "didn't transition to IdleState after start()");
+        QVERIFY2((audioOutput.error() == QAudio::NoError), "error state is not equal to QAudio::NoError after start()");
+        QVERIFY(audioOutput.periodSize() > 0);
+        stateSignal.clear();
+
+        // Check that 'elapsed' increases
+        QTest::qWait(40);
+        QVERIFY2((audioOutput.elapsedUSecs() > 0), "elapsedUSecs() is still zero after start()");
+        QVERIFY2((audioOutput.processedUSecs() == qint64(0)), "processedUSecs() is not zero after start()");
+
+        qint64 written = 0;
+        bool firstBuffer = true;
+        char buffer[AUDIO_BUFFER];
+
+        // Play half of the clip
+        while (written < (audioFiles.at(i)->size()-WavHeader::headerLength())/2) {
+
+            if (audioOutput.bytesFree() > audioOutput.periodSize()) {
+                qint64 len = audioFiles.at(i)->read(buffer,audioOutput.periodSize());
+                written += feed->write(buffer, len);
+
+                if (firstBuffer) {
+                    // Check for transition to ActiveState when data is provided
+                    QVERIFY2((stateSignal.count() == 1),
+                            QString("didn't emit signal after receiving data, got %1 signals instead")
+                            .arg(stateSignal.count()).toLocal8Bit().constData());
+                    QVERIFY2((audioOutput.state() == QAudio::ActiveState), "didn't transition to ActiveState after receiving data");
+                    QVERIFY2((audioOutput.error() == QAudio::NoError), "error state is not equal to QAudio::NoError after receiving data");
+                    firstBuffer = false;
+                }
+            } else
+                QTest::qWait(20);
+        }
+        stateSignal.clear();
+
+        // Wait for data to be played
+        QTest::qWait(1000);
+
+        QVERIFY2((stateSignal.count() == 1),
+                QString("didn't emit IdleState signal after suspend(), got %1 signals instead")
+                .arg(stateSignal.count()).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.state() == QAudio::IdleState), "didn't transition to IdleState, no data");
+        QVERIFY2((audioOutput.error() == QAudio::UnderrunError), "error state is not equal to QAudio::UnderrunError, no data");
+        stateSignal.clear();
+
+        firstBuffer = true;
+        // Play rest of the clip
+        while (!audioFiles.at(i)->atEnd()) {
+            if (audioOutput.bytesFree() >= audioOutput.periodSize()) {
+                qint64 len = audioFiles.at(i)->read(buffer,audioOutput.periodSize());
+                written += feed->write(buffer, len);
+                if (firstBuffer) {
+                    // Check for transition to ActiveState when data is provided
+                    QVERIFY2((stateSignal.count() == 1),
+                            QString("didn't emit signal after receiving data, got %1 signals instead")
+                            .arg(stateSignal.count()).toLocal8Bit().constData());
+                    QVERIFY2((audioOutput.state() == QAudio::ActiveState), "didn't transition to ActiveState after receiving data");
+                    QVERIFY2((audioOutput.error() == QAudio::NoError), "error state is not equal to QAudio::NoError after receiving data");
+                    firstBuffer = false;
+                }
+            } else
+                QTest::qWait(20);
+        }
+        stateSignal.clear();
+
+        // Wait until playback finishes
+        QTest::qWait(1000); // 1 seconds should be plenty
+
+        QVERIFY2(audioFiles.at(i)->atEnd(), "didn't play to EOF");
+        QVERIFY2((stateSignal.count() == 1),
+            QString("didn't emit IdleState signal when at EOF, got %1 signals instead").arg(stateSignal.count()).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.state() == QAudio::IdleState), "didn't transitions to IdleState when at EOF");
+        stateSignal.clear();
+
+        qint64 processedUs = audioOutput.processedUSecs();
+
+        audioOutput.stop();
+        QTest::qWait(40);
+        QVERIFY2((stateSignal.count() == 1),
+            QString("didn't emit StoppedState signal after stop(), got %1 signals instead").arg(stateSignal.count()).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.state() == QAudio::StoppedState), "didn't transitions to StoppedState after stop()");
+
+        QVERIFY2((processedUs == 2000000),
+                QString("processedUSecs() doesn't equal file duration in us (%1)").arg(processedUs).toLocal8Bit().constData());
+        QVERIFY2((audioOutput.error() == QAudio::NoError), "error() is not QAudio::NoError after stop()");
+        QVERIFY2((audioOutput.elapsedUSecs() == (qint64)0), "elapsedUSecs() not equal to zero in StoppedState");
+
+        audioFiles.at(i)->close();
+    }
+}
+
+void tst_QAudioOutput::cleanupTestCase()
+{
+    QFile* file;
+
+    foreach (file, audioFiles) {
+        file->remove();
+        delete file;
+    }
+}
+
+QTEST_MAIN(tst_QAudioOutput)
+
+#include "tst_qaudiooutput.moc"