view base/test/TestColumnOp.h @ 1265:e2e66bfd4a88 3.0-integration

Start tests for ColumnOp (+ some resulting fixes)

/* -*- 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_COLUMN_OP_H
#define TEST_COLUMN_OP_H

#include "../ColumnOp.h"

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

#include <iostream>

using namespace std;

class TestColumnOp : public QObject
{
    Q_OBJECT

    typedef ColumnOp C;
    typedef ColumnOp::Column Column;
    
private slots:
    void applyGain() {
        QCOMPARE(C::applyGain({}, 1.0), Column());
        Column c { 1, 2, 3, -4, 5, 6 };
        Column actual(C::applyGain(c, 1.5));
        Column expected { 1.5, 3, 4.5, -6, 7.5, 9 };
        QCOMPARE(actual, expected);
        actual = C::applyGain(c, 1.0);
        QCOMPARE(actual, c);
        actual = C::applyGain(c, 0.0);
        expected = { 0, 0, 0, 0, 0, 0 };
        QCOMPARE(actual, expected);
    }

    void fftScale() {
        QCOMPARE(C::fftScale({}, 2.0), Column());
        Column c { 1, 2, 3, -4, 5 };
        Column actual(C::fftScale(c, 8));
        Column expected { 0.25, 0.5, 0.75, -1, 1.25 };
        QCOMPARE(actual, expected);
    }

    void isPeak_null() {
        QVERIFY(!C::isPeak({}, 0));
        QVERIFY(!C::isPeak({}, 1));
        QVERIFY(!C::isPeak({}, -1));
    }

    void isPeak_obvious() {
        Column c { 0.4, 0.5, 0.3 };
        QVERIFY(!C::isPeak(c, 0));
        QVERIFY(C::isPeak(c, 1));
        QVERIFY(!C::isPeak(c, 2));
    }

    void isPeak_edges() {
        Column c { 0.5, 0.4, 0.3 };
        QVERIFY(C::isPeak(c, 0));
        QVERIFY(!C::isPeak(c, 1));
        QVERIFY(!C::isPeak(c, 2));
        QVERIFY(!C::isPeak(c, 3));
        QVERIFY(!C::isPeak(c, -1));
        c = { 1.4, 1.5 };
        QVERIFY(!C::isPeak(c, 0));
        QVERIFY(C::isPeak(c, 1));
    }

    void isPeak_flat() {
        Column c { 0.0, 0.0, 0.0 };
        QVERIFY(C::isPeak(c, 0));
        QVERIFY(!C::isPeak(c, 1));
        QVERIFY(!C::isPeak(c, 2));
    }

    void isPeak_mixedSign() {
        Column c { 0.4, -0.5, -0.3, -0.6, 0.1, -0.3 };
        QVERIFY(C::isPeak(c, 0));
        QVERIFY(!C::isPeak(c, 1));
        QVERIFY(C::isPeak(c, 2));
        QVERIFY(!C::isPeak(c, 3));
        QVERIFY(C::isPeak(c, 4));
        QVERIFY(!C::isPeak(c, 5));
    }

    void isPeak_duplicate() {
        Column c({ 0.5, 0.5, 0.4, 0.4 });
        QVERIFY(C::isPeak(c, 0));
        QVERIFY(!C::isPeak(c, 1));
        QVERIFY(!C::isPeak(c, 2));
        QVERIFY(!C::isPeak(c, 3));
        c = { 0.4, 0.4, 0.5, 0.5 };
        QVERIFY(C::isPeak(c, 0)); // counterintuitive but necessary
        QVERIFY(!C::isPeak(c, 1));
        QVERIFY(C::isPeak(c, 2));
        QVERIFY(!C::isPeak(c, 3));
    }

    void peakPick() {
        QCOMPARE(C::peakPick({}), Column());
        Column c({ 0.5, 0.5, 0.4, 0.4 });
        QCOMPARE(C::peakPick(c), Column({ 0.5, 0.0, 0.0, 0.0 }));
        c = Column({ 0.4, -0.5, -0.3, -0.6, 0.1, -0.3 });
        QCOMPARE(C::peakPick(c), Column({ 0.4, 0.0, -0.3, 0.0, 0.1, 0.0 }));
    }

    void normalize_null() {
        QCOMPARE(C::normalize({}, ColumnNormalization::None), Column());
        QCOMPARE(C::normalize({}, ColumnNormalization::Sum1), Column());
        QCOMPARE(C::normalize({}, ColumnNormalization::Max1), Column());
        QCOMPARE(C::normalize({}, ColumnNormalization::Hybrid), Column());
    }

    void normalize_none() {
        Column c { 1, 2, 3, 4 };
        QCOMPARE(C::normalize(c, ColumnNormalization::None), c);
    }

    void normalize_sum1() {
        Column c { 1, 2, 4, 3 };
        QCOMPARE(C::normalize(c, ColumnNormalization::Sum1),
                 Column({ 0.1, 0.2, 0.4, 0.3 }));
    }

    void normalize_max1() {
        Column c { 4, 3, 2, 1 };
        QCOMPARE(C::normalize(c, ColumnNormalization::Max1),
                 Column({ 1.0, 0.75, 0.5, 0.25 }));
    }

    void normalize_hybrid() {
        // with max == 99, log10(max+1) == 2 so scale factor will be 2/99
        Column c { 22, 44, 99, 66 };
        QCOMPARE(C::normalize(c, ColumnNormalization::Hybrid),
                 Column({ 44.0/99.0, 88.0/99.0, 2.0, 132.0/99.0 }));
    }

    
        
};
    
#endif