diff base/test/RangeMapperTest.h @ 879:eb6b6a88faed

Unit-test RangeMapper, fix a couple of bugs

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/base/test/RangeMapperTest.h	Fri Jan 31 13:39:37 2014 +0000
@@ -0,0 +1,138 @@
+/* -*- 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_RANGE_MAPPER_H
+#define TEST_RANGE_MAPPER_H
+
+#include "../RangeMapper.h"
+
+#include <QObject>
+#include <QtTest>
+#include <QDir>
+
+#include <iostream>
+
+using namespace std;
+
+class RangeMapperTest : public QObject
+{
+    Q_OBJECT
+
+private slots:
+    void linearUpForward()
+    {
+	LinearRangeMapper rm(1, 8, 0.5, 4.0, "x", false);
+	QCOMPARE(rm.getUnit(), QString("x"));
+	QCOMPARE(rm.getPositionForValue(0.5), 1);
+	QCOMPARE(rm.getPositionForValue(4.0), 8);
+	QCOMPARE(rm.getPositionForValue(3.0), 6);
+	QCOMPARE(rm.getPositionForValue(3.1), 6);
+	QCOMPARE(rm.getPositionForValue(3.4), 7);
+	QCOMPARE(rm.getPositionForValue(0.2), 1);
+	QCOMPARE(rm.getPositionForValue(-12), 1);
+	QCOMPARE(rm.getPositionForValue(6.1), 8);
+    }
+
+    void linearDownForward()
+    {
+	LinearRangeMapper rm(1, 8, 0.5, 4.0, "x", true);
+	QCOMPARE(rm.getUnit(), QString("x"));
+	QCOMPARE(rm.getPositionForValue(0.5), 8);
+	QCOMPARE(rm.getPositionForValue(4.0), 1);
+	QCOMPARE(rm.getPositionForValue(3.0), 3);
+	QCOMPARE(rm.getPositionForValue(3.1), 3);
+	QCOMPARE(rm.getPositionForValue(3.4), 2);
+	QCOMPARE(rm.getPositionForValue(0.2), 8);
+	QCOMPARE(rm.getPositionForValue(-12), 8);
+	QCOMPARE(rm.getPositionForValue(6.1), 1);
+    }
+
+    void linearUpBackward()
+    {
+	LinearRangeMapper rm(1, 8, 0.5, 4.0, "x", false);
+	QCOMPARE(rm.getUnit(), QString("x"));
+	QCOMPARE(rm.getValueForPosition(1), 0.5);
+	QCOMPARE(rm.getValueForPosition(8), 4.0);
+	QCOMPARE(rm.getValueForPosition(6), 3.0);
+	QCOMPARE(rm.getValueForPosition(7), 3.5);
+	QCOMPARE(rm.getValueForPosition(0), rm.getValueForPosition(1));
+	QCOMPARE(rm.getValueForPosition(9), rm.getValueForPosition(8));
+    }
+
+    void linearDownBackward()
+    {
+	LinearRangeMapper rm(1, 8, 0.5, 4.0, "x", true);
+	QCOMPARE(rm.getUnit(), QString("x"));
+	QCOMPARE(rm.getValueForPosition(8), 0.5);
+	QCOMPARE(rm.getValueForPosition(1), 4.0);
+	QCOMPARE(rm.getValueForPosition(3), 3.0);
+	QCOMPARE(rm.getValueForPosition(2), 3.5);
+	QCOMPARE(rm.getValueForPosition(0), rm.getValueForPosition(1));
+	QCOMPARE(rm.getValueForPosition(9), rm.getValueForPosition(8));
+    }
+
+    void logUpForward()
+    {
+	LogRangeMapper rm(3, 7, 10, 100000, "x", false);
+	QCOMPARE(rm.getUnit(), QString("x"));
+	QCOMPARE(rm.getPositionForValue(10.0), 3);
+	QCOMPARE(rm.getPositionForValue(100000.0), 7);
+	QCOMPARE(rm.getPositionForValue(1.0), 3);
+	QCOMPARE(rm.getPositionForValue(1000000.0), 7);
+	QCOMPARE(rm.getPositionForValue(1000.0), 5);
+	QCOMPARE(rm.getPositionForValue(900.0), 5);
+	QCOMPARE(rm.getPositionForValue(20000), 6);
+    }
+
+    void logDownForward()
+    {
+	LogRangeMapper rm(3, 7, 10, 100000, "x", true);
+	QCOMPARE(rm.getUnit(), QString("x"));
+	QCOMPARE(rm.getPositionForValue(10.0), 7);
+	QCOMPARE(rm.getPositionForValue(100000.0), 3);
+	QCOMPARE(rm.getPositionForValue(1.0), 7);
+	QCOMPARE(rm.getPositionForValue(1000000.0), 3);
+	QCOMPARE(rm.getPositionForValue(1000.0), 5);
+	QCOMPARE(rm.getPositionForValue(900.0), 5);
+	QCOMPARE(rm.getPositionForValue(20000), 4);
+    }
+
+    void logUpBackward()
+    {
+	LogRangeMapper rm(3, 7, 10, 100000, "x", false);
+	QCOMPARE(rm.getUnit(), QString("x"));
+	QCOMPARE(rm.getValueForPosition(3), 10.0);
+	QCOMPARE(rm.getValueForPosition(7), 100000.0);
+	QCOMPARE(rm.getValueForPosition(5), 1000.0);
+	QCOMPARE(rm.getValueForPosition(6), 10000.0);
+	QCOMPARE(rm.getValueForPosition(0), rm.getValueForPosition(3));
+	QCOMPARE(rm.getValueForPosition(9), rm.getValueForPosition(7));
+    }
+
+    void logDownBackward()
+    {
+	LogRangeMapper rm(3, 7, 10, 100000, "x", true);
+	QCOMPARE(rm.getUnit(), QString("x"));
+	QCOMPARE(rm.getValueForPosition(7), 10.0);
+	QCOMPARE(rm.getValueForPosition(3), 100000.0);
+	QCOMPARE(rm.getValueForPosition(5), 1000.0);
+	QCOMPARE(rm.getValueForPosition(4), 10000.0);
+	QCOMPARE(rm.getValueForPosition(0), rm.getValueForPosition(3));
+	QCOMPARE(rm.getValueForPosition(9), rm.getValueForPosition(7));
+    }
+};
+
+#endif
+
+