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#include <QtTest/QtTest>

#include <QtCore/qlocale.h>

#include <qaudioinput.h>

#include <qaudiodeviceinfo.h>

#include <qaudio.h>

#include <qaudioformat.h>

class tst_QAudioInput : public QObject

{

    Q_OBJECT

public:

    tst_QAudioInput(QObject* parent=0) : QObject(parent) {}

private slots:

    void initTestCase();

    void settings();

    void buffers();

    void notifyInterval();

    void pullFile();

private:

    bool           available;

    QAudioFormat   format;

    QAudioInput*   audio;

};

void tst_QAudioInput::initTestCase()

{

    format.setFrequency(8000);

    format.setChannels(1);

    format.setSampleSize(8);

    format.setCodec("audio/pcm");

    format.setByteOrder(QAudioFormat::LittleEndian);

    format.setSampleType(QAudioFormat::UnSignedInt);

    // Only perform tests if audio input device exists!

    QList<QAudioDeviceInfo> devices = QAudioDeviceInfo::availableDevices(QAudio::AudioInput);

    if(devices.size() > 0)

        available = true;

    else {

        qWarning()<<"NOTE: no audio input device found, no test will be performed";

        available = false;

    }

    if(available)

        audio = new QAudioInput(format, this);

}

void tst_QAudioInput::settings()

{

    if(available) {

        // Confirm the setting we added in the init function.

        QAudioFormat f = audio->format();

        QVERIFY(format.channels() == f.channels());

        QVERIFY(format.frequency() == f.frequency());

        QVERIFY(format.sampleSize() == f.sampleSize());

        QVERIFY(format.codec() == f.codec());

        QVERIFY(format.byteOrder() == f.byteOrder());

        QVERIFY(format.sampleType() == f.sampleType());

    }

}

void tst_QAudioInput::buffers()

{

    if(available) {

        // Should always have a buffer size greater than zero.

        int store = audio->bufferSize();

        audio->setBufferSize(4096);

        QVERIFY(audio->bufferSize() > 0);

        audio->setBufferSize(store);

        QVERIFY(audio->bufferSize() == store);

    }

}

void tst_QAudioInput::notifyInterval()

{

    if(available) {

        QVERIFY(audio->notifyInterval() == 1000);   // Default

        audio->setNotifyInterval(500);

        QVERIFY(audio->notifyInterval() == 500);    // Custom

        audio->setNotifyInterval(1000);             // reset

    }

}

void tst_QAudioInput::pullFile()

{

    if(available) {

        filename.open( QIODevice::WriteOnly | QIODevice::Truncate );

        QSignalSpy readSignal(audio, SIGNAL(notify()));

        QSignalSpy stateSignal(audio, SIGNAL(stateChanged(QAudio::State)));

        // Always have default states, before start

        QVERIFY(audio->state() == QAudio::StoppedState);

        QVERIFY(audio->error() == QAudio::NoError);

        QVERIFY(audio->elapsedUSecs() == 0);

        audio->start(&filename);

        QTest::qWait(20);

        // Check state and periodSize() are valid non-zero values.

        QVERIFY(audio->state() == QAudio::ActiveState);

        QVERIFY(audio->error() == QAudio::NoError);

        QVERIFY(audio->elapsedUSecs() > 10000 && audio->elapsedUSecs() < 800000);

        QVERIFY(audio->periodSize() > 0);

        QVERIFY(stateSignal.count() == 1); // State changed to QAudio::ActiveState

        // Wait until finished...

        QTest::qWait(5000);

        QVERIFY(readSignal.count() > 0);

        QVERIFY(audio->processedUSecs() > 0);

        audio->stop();

        QTest::qWait(20);

        QVERIFY(audio->state() == QAudio::StoppedState);

        QVERIFY(audio->elapsedUSecs() == 0);

        // Can only check to make sure we got at least 1 more signal, but can be more.

        QVERIFY(stateSignal.count() > 1);

        filename.close();

    }

}

QTEST_MAIN(tst_QAudioInput)

#include "tst_qaudioinput.moc"