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/* -*- 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_LOG_RANGE_H
#define TEST_LOG_RANGE_H
#include "../LogRange.h"
#include <QObject>
#include <QtTest>
#include <iostream>
#include <cmath>
using namespace std;
using namespace sv;
class TestLogRange : public QObject
{
Q_OBJECT
private slots:
void mapPositiveAboveDefaultThreshold()
{
QCOMPARE(LogRange::map(10.0), 1.0);
QCOMPARE(LogRange::map(100.0), 2.0);
QCOMPARE(LogRange::map(0.1), -1.0);
QCOMPARE(LogRange::map(1.0), 0.0);
QCOMPARE(LogRange::map(0.0000001), -7.0);
QCOMPARE(LogRange::map(20.0), log10(20.0));
}
void mapPositiveAboveSetThreshold()
{
QCOMPARE(LogRange::map(10.0, -10.0), 1.0);
QCOMPARE(LogRange::map(100.0, 1.0), 2.0);
QCOMPARE(LogRange::map(0.1, -5.0), -1.0);
QCOMPARE(LogRange::map(1.0, -0.01), 0.0);
QCOMPARE(LogRange::map(0.0000001, -20.0), -7.0);
QCOMPARE(LogRange::map(20.0, 0.0), log10(20.0));
}
void mapZeroDefaultThreshold()
{
QCOMPARE(LogRange::map(0.0), -10.0);
}
void mapZeroSetThreshold()
{
QCOMPARE(LogRange::map(0.0, 12.0), 12.0);
QCOMPARE(LogRange::map(0.0, -12.0), -12.0);
QCOMPARE(LogRange::map(0.0, 0.0), 0.0);
}
void mapPositiveBelowDefaultThreshold()
{
// The threshold is used only for zero values, not for very
// small ones -- it's arguably a stand-in or replacement value
// rather than a threshold. So this should behave the same as
// for values above the threshold.
QCOMPARE(LogRange::map(1e-10), -10.0);
QCOMPARE(LogRange::map(1e-20), -20.0);
QCOMPARE(LogRange::map(1e-100), -100.0);
}
void mapPositiveBelowSetThreshold()
{
// As above
QCOMPARE(LogRange::map(10.0, 4.0), 1.0);
QCOMPARE(LogRange::map(1e-10, 4.0), -10.0);
QCOMPARE(LogRange::map(1e-20, -15.0), -20.0);
QCOMPARE(LogRange::map(1e-100, -100.0), -100.0);
}
void mapNegative()
{
// Should always return map of absolute value. These are
// picked from vaarious of the above tests.
QCOMPARE(LogRange::map(-10.0), 1.0);
QCOMPARE(LogRange::map(-100.0), 2.0);
QCOMPARE(LogRange::map(-0.1), -1.0);
QCOMPARE(LogRange::map(-1.0), 0.0);
QCOMPARE(LogRange::map(-0.0000001), -7.0);
QCOMPARE(LogRange::map(-20.0), log10(20.0));
QCOMPARE(LogRange::map(-10.0, 4.0), 1.0);
QCOMPARE(LogRange::map(-1e-10, 4.0), -10.0);
QCOMPARE(LogRange::map(-1e-20, -15.0), -20.0);
QCOMPARE(LogRange::map(-1e-100, -100.0), -100.0);
QCOMPARE(LogRange::map(-0.0, 12.0), 12.0);
QCOMPARE(LogRange::map(-0.0, -12.0), -12.0);
QCOMPARE(LogRange::map(-0.0, 0.0), 0.0);
}
void unmap()
{
// Simply pow(10, x)
QCOMPARE(LogRange::unmap(0.0), 1.0);
QCOMPARE(LogRange::unmap(1.0), 10.0);
QCOMPARE(LogRange::unmap(-1.0), 0.1);
QCOMPARE(LogRange::unmap(100.0), 1e+100);
QCOMPARE(LogRange::unmap(-100.0), 1e-100);
}
void mapRangeAllPositiveDefaultThreshold()
{
double min, max;
min = 1.0; max = 10.0;
LogRange::mapRange(min, max);
QCOMPARE(min, 0.0); QCOMPARE(max, 1.0);
min = 10.0; max = 1.0;
LogRange::mapRange(min, max);
QCOMPARE(min, 0.0); QCOMPARE(max, 1.0);
// if equal, the function uses an arbitrary 1.0 range before mapping
min = 10.0; max = 10.0;
LogRange::mapRange(min, max);
QCOMPARE(min, 1.0); QCOMPARE(max, log10(11.0));
}
void mapRangeAllPositiveSetThreshold()
{
double min, max;
min = 1.0; max = 10.0;
LogRange::mapRange(min, max, -4.0);
QCOMPARE(min, 0.0); QCOMPARE(max, 1.0);
min = 10.0; max = 1.0;
LogRange::mapRange(min, max, -4.0);
QCOMPARE(min, 0.0); QCOMPARE(max, 1.0);
// if equal, the function uses an arbitrary 1.0 range before mapping
min = 10.0; max = 10.0;
LogRange::mapRange(min, max, -4.0);
QCOMPARE(min, 1.0); QCOMPARE(max, log10(11.0));
}
void mapRangeAllNegativeDefaultThreshold()
{
double min, max;
min = -1.0; max = -10.0;
LogRange::mapRange(min, max);
QCOMPARE(min, 0.0); QCOMPARE(max, 1.0);
min = -10.0; max = -1.0;
LogRange::mapRange(min, max);
QCOMPARE(min, 0.0); QCOMPARE(max, 1.0);
// if equal, the function uses an arbitrary 1.0 range before mapping
min = -10.0; max = -10.0;
LogRange::mapRange(min, max);
QCOMPARE(min, log10(9.0)); QCOMPARE(max, 1.0);
}
void mapRangeAllNegativeSetThreshold()
{
double min, max;
min = -1.0; max = -10.0;
LogRange::mapRange(min, max, -4.0);
QCOMPARE(min, 0.0); QCOMPARE(max, 1.0);
min = -10.0; max = -1.0;
LogRange::mapRange(min, max, -4.0);
QCOMPARE(min, 0.0); QCOMPARE(max, 1.0);
// if equal, the function uses an arbitrary 1.0 range before mapping
min = -10.0; max = -10.0;
LogRange::mapRange(min, max, -4.0);
QCOMPARE(min, log10(9.0)); QCOMPARE(max, 1.0);
}
void mapRangeAllNonNegativeDefaultThreshold()
{
double min, max;
min = 0.0; max = 10.0;
LogRange::mapRange(min, max);
QCOMPARE(min, -10.0); QCOMPARE(max, 1.0);
min = 10.0; max = 0.0;
LogRange::mapRange(min, max);
QCOMPARE(min, -10.0); QCOMPARE(max, 1.0);
// if equal, the function uses an arbitrary 1.0 range before mapping
min = 0.0; max = 0.0;
LogRange::mapRange(min, max);
QCOMPARE(min, -10.0); QCOMPARE(max, 0.0);
}
void mapRangeAllNonNegativeSetThreshold()
{
double min, max;
min = 0.0; max = 10.0;
LogRange::mapRange(min, max, -4.0);
QCOMPARE(min, -4.0); QCOMPARE(max, 1.0);
min = 10.0; max = 0.0;
LogRange::mapRange(min, max, -4.0);
QCOMPARE(min, -4.0); QCOMPARE(max, 1.0);
// if equal, the function uses an arbitrary 1.0 range before mapping
min = 0.0; max = 0.0;
LogRange::mapRange(min, max, -4.0);
QCOMPARE(min, -4.0); QCOMPARE(max, 0.0);
}
void mapRangeAllNonPositiveDefaultThreshold()
{
double min, max;
min = 0.0; max = -10.0;
LogRange::mapRange(min, max);
QCOMPARE(min, -10.0); QCOMPARE(max, 1.0);
min = -10.0; max = 0.0;
LogRange::mapRange(min, max);
QCOMPARE(min, -10.0); QCOMPARE(max, 1.0);
}
void mapRangeAllNonPositiveSetThreshold()
{
double min, max;
min = 0.0; max = -10.0;
LogRange::mapRange(min, max, -4.0);
QCOMPARE(min, -4.0); QCOMPARE(max, 1.0);
min = -10.0; max = 0.0;
LogRange::mapRange(min, max, -4.0);
QCOMPARE(min, -4.0); QCOMPARE(max, 1.0);
}
void mapRangeSpanningZeroDefaultThreshold()
{
double min, max;
min = -1.0; max = 10.0;
LogRange::mapRange(min, max);
QCOMPARE(min, -10.0); QCOMPARE(max, 1.0);
min = -100.0; max = 1.0;
LogRange::mapRange(min, max);
QCOMPARE(min, -10.0); QCOMPARE(max, 2.0);
min = -10.0; max = 1e-200;
LogRange::mapRange(min, max);
QCOMPARE(min, -10.0); QCOMPARE(max, 1.0);
min = 1e-200; max = -10.0;
LogRange::mapRange(min, max);
QCOMPARE(min, -10.0); QCOMPARE(max, 1.0);
min = -1e-200; max = 100.0;
LogRange::mapRange(min, max);
QCOMPARE(min, -10.0); QCOMPARE(max, 2.0);
min = 10.0; max = -1e-200;
LogRange::mapRange(min, max);
QCOMPARE(min, -10.0); QCOMPARE(max, 1.0);
// if none of the input range is above the threshold in
// magnitude, but it still spans zero, we use the input max as
// threshold and then add 1 for range
min = -1e-200; max = 1e-300;
LogRange::mapRange(min, max);
QCOMPARE(min, -201.0); QCOMPARE(max, -200.0);
min = 1e-200; max = -1e-300;
LogRange::mapRange(min, max);
QCOMPARE(min, -201.0); QCOMPARE(max, -200.0);
}
void mapRangeSpanningZeroSetThreshold()
{
double min, max;
min = -1.0; max = 10.0;
LogRange::mapRange(min, max, -4.0);
QCOMPARE(min, -4.0); QCOMPARE(max, 1.0);
min = -100.0; max = 1.0;
LogRange::mapRange(min, max, -4.0);
QCOMPARE(min, -4.0); QCOMPARE(max, 2.0);
min = -10.0; max = 1e-200;
LogRange::mapRange(min, max, -4.0);
QCOMPARE(min, -4.0); QCOMPARE(max, 1.0);
min = 1e-200; max = -10.0;
LogRange::mapRange(min, max, -4.0);
QCOMPARE(min, -4.0); QCOMPARE(max, 1.0);
min = -1e-200; max = 100.0;
LogRange::mapRange(min, max, -4.0);
QCOMPARE(min, -4.0); QCOMPARE(max, 2.0);
min = 10.0; max = -1e-200;
LogRange::mapRange(min, max, -4.0);
QCOMPARE(min, -4.0); QCOMPARE(max, 1.0);
// if none of the input range is above the threshold in
// magnitude, but it still spans zero, we use the input max as
// threshold and then add 1 for range
min = -1e-200; max = 1e-300;
LogRange::mapRange(min, max, -4.0);
QCOMPARE(min, -201.0); QCOMPARE(max, -200.0);
min = 1e-200; max = -1e-300;
LogRange::mapRange(min, max, -4.0);
QCOMPARE(min, -201.0); QCOMPARE(max, -200.0);
}
};
#endif
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