view base/test/TestPitch.h @ 1752:6d09d68165a4 by-id

Further review of ById: make IDs only available when adding a model to the ById store, not by querying the item directly. This means any id encountered in the wild must have been added to the store at some point (even if later released), which simplifies reasoning about lifecycles

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#ifndef TEST_PITCH_H
#define TEST_PITCH_H

#include "../Pitch.h"
#include "../Preferences.h"

#include <QObject>
#include <QtTest>
#include <QDir>

#include <iostream>

using namespace std;

class TestPitch : public QObject
{
    Q_OBJECT

private slots:
    void init() {
        Preferences::getInstance()->setOctaveOfMiddleC(4);
        Preferences::getInstance()->setTuningFrequency(440);
    }

    void pitchLabel()
    {
        QCOMPARE(Pitch::getPitchLabel(60, 0, false), QString("C4"));
        QCOMPARE(Pitch::getPitchLabel(69, 0, false), QString("A4"));
        QCOMPARE(Pitch::getPitchLabel(61, 0, false), QString("C#4"));
        QCOMPARE(Pitch::getPitchLabel(61, 0, true), QString("Db4"));
        QCOMPARE(Pitch::getPitchLabel(59, 0, false), QString("B3"));
        QCOMPARE(Pitch::getPitchLabel(59, 0, true), QString("B3"));
        QCOMPARE(Pitch::getPitchLabel(0, 0, false), QString("C-1"));

        QCOMPARE(Pitch::getPitchLabel(60, -40, false), QString("C4-40c"));
        QCOMPARE(Pitch::getPitchLabel(60, 40, false), QString("C4+40c"));
        QCOMPARE(Pitch::getPitchLabel(58, 4, false), QString("A#3+4c"));

        Preferences::getInstance()->setOctaveOfMiddleC(3);

        QCOMPARE(Pitch::getPitchLabel(60, 0, false), QString("C3"));
        QCOMPARE(Pitch::getPitchLabel(69, 0, false), QString("A3"));
        QCOMPARE(Pitch::getPitchLabel(61, 0, false), QString("C#3"));
        QCOMPARE(Pitch::getPitchLabel(61, 0, true), QString("Db3"));
        QCOMPARE(Pitch::getPitchLabel(59, 0, false), QString("B2"));
        QCOMPARE(Pitch::getPitchLabel(59, 0, true), QString("B2"));
        QCOMPARE(Pitch::getPitchLabel(0, 0, false), QString("C-2"));

        QCOMPARE(Pitch::getPitchLabel(60, -40, false), QString("C3-40c"));
        QCOMPARE(Pitch::getPitchLabel(60, 40, false), QString("C3+40c"));
        QCOMPARE(Pitch::getPitchLabel(58, 4, false), QString("A#2+4c"));
    }

    void pitchLabelForFrequency()
    {
        QCOMPARE(Pitch::getPitchLabelForFrequency(440, 440, false), QString("A4"));
        QCOMPARE(Pitch::getPitchLabelForFrequency(440, 220, false), QString("A5"));
        QCOMPARE(Pitch::getPitchLabelForFrequency(261.63, 440, false), QString("C4"));
    }

#define MIDDLE_C 261.6255653005986

    void frequencyForPitch()
    {
        QCOMPARE(Pitch::getFrequencyForPitch(60, 0), MIDDLE_C);
        QCOMPARE(Pitch::getFrequencyForPitch(69, 0), 440.0);
        QCOMPARE(Pitch::getFrequencyForPitch(60, 0, 220), MIDDLE_C / 2.0);
        QCOMPARE(Pitch::getFrequencyForPitch(69, 0, 220), 220.0);
    }

    void pitchForFrequency()
    {
        double centsOffset = 0.0;
        QCOMPARE(Pitch::getPitchForFrequency(MIDDLE_C, &centsOffset), 60);
        QCOMPARE(centsOffset + 1.0, 1.0); // avoid ineffective fuzzy-compare to 0
        QCOMPARE(Pitch::getPitchForFrequency(261.0, &centsOffset), 60);
        QCOMPARE(int(centsOffset), -4);
        QCOMPARE(Pitch::getPitchForFrequency(440.0, &centsOffset), 69);
        QCOMPARE(centsOffset + 1.0, 1.0);
    }

    void pitchForFrequencyF()
    {
        float centsOffset = 0.f;
        QCOMPARE(Pitch::getPitchForFrequency(MIDDLE_C, &centsOffset), 60);
        QCOMPARE(centsOffset + 1.f, 1.f); // avoid ineffective fuzzy-compare to 0
        QCOMPARE(Pitch::getPitchForFrequency(261.0, &centsOffset), 60);
        QCOMPARE(int(centsOffset), -4);
        QCOMPARE(Pitch::getPitchForFrequency(440.0, &centsOffset), 69);
        QCOMPARE(centsOffset + 1.f, 1.f);
    }
};

#endif