diff data/model/test/TestZoomConstraints.h @ 1528:a7485c1bdba5

Tests and a couple of minor fixes for zoom constraints

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/data/model/test/TestZoomConstraints.h	Tue Sep 18 15:04:46 2018 +0100
@@ -0,0 +1,180 @@
+/* -*- 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_ZOOM_CONSTRAINTS_H
+#define TEST_ZOOM_CONSTRAINTS_H
+
+#include "../PowerOfTwoZoomConstraint.h"
+#include "../PowerOfSqrtTwoZoomConstraint.h"
+
+#include <QObject>
+#include <QtTest>
+#include <QDir>
+
+#include <iostream>
+
+using namespace std;
+
+class TestZoomConstraints : public QObject
+{
+    Q_OBJECT
+
+private slots:
+    void unconstrainedNearest() {
+        ZoomConstraint c;
+        QCOMPARE(c.getNearestBlockSize(1), 1);
+        QCOMPARE(c.getNearestBlockSize(2), 2);
+        QCOMPARE(c.getNearestBlockSize(3), 3);
+        QCOMPARE(c.getNearestBlockSize(4), 4);
+        QCOMPARE(c.getNearestBlockSize(20), 20);
+        QCOMPARE(c.getNearestBlockSize(23), 23);
+        int max = c.getMaxZoomLevel();
+        QCOMPARE(c.getNearestBlockSize(max), max);
+        QCOMPARE(c.getNearestBlockSize(max+1), max);
+    }
+    
+    void unconstrainedUp() {
+        ZoomConstraint c;
+        QCOMPARE(c.getNearestBlockSize(1, ZoomConstraint::RoundUp), 1);
+        QCOMPARE(c.getNearestBlockSize(2, ZoomConstraint::RoundUp), 2);
+        QCOMPARE(c.getNearestBlockSize(3, ZoomConstraint::RoundUp), 3);
+        QCOMPARE(c.getNearestBlockSize(4, ZoomConstraint::RoundUp), 4);
+        QCOMPARE(c.getNearestBlockSize(20, ZoomConstraint::RoundUp), 20);
+        QCOMPARE(c.getNearestBlockSize(32, ZoomConstraint::RoundUp), 32);
+        int max = c.getMaxZoomLevel();
+        QCOMPARE(c.getNearestBlockSize(max, ZoomConstraint::RoundUp), max);
+        QCOMPARE(c.getNearestBlockSize(max+1, ZoomConstraint::RoundUp), max);
+    }
+    
+    void unconstrainedDown() {
+        ZoomConstraint c;
+        QCOMPARE(c.getNearestBlockSize(1, ZoomConstraint::RoundDown), 1);
+        QCOMPARE(c.getNearestBlockSize(2, ZoomConstraint::RoundDown), 2);
+        QCOMPARE(c.getNearestBlockSize(3, ZoomConstraint::RoundDown), 3);
+        QCOMPARE(c.getNearestBlockSize(4, ZoomConstraint::RoundDown), 4);
+        QCOMPARE(c.getNearestBlockSize(20, ZoomConstraint::RoundDown), 20);
+        QCOMPARE(c.getNearestBlockSize(32, ZoomConstraint::RoundDown), 32);
+        int max = c.getMaxZoomLevel();
+        QCOMPARE(c.getNearestBlockSize(max, ZoomConstraint::RoundDown), max);
+        QCOMPARE(c.getNearestBlockSize(max+1, ZoomConstraint::RoundDown), max);
+    }
+
+    void powerOfTwoNearest() {
+        PowerOfTwoZoomConstraint c;
+        QCOMPARE(c.getNearestBlockSize(1), 1);
+        QCOMPARE(c.getNearestBlockSize(2), 2);
+        QCOMPARE(c.getNearestBlockSize(3), 2);
+        QCOMPARE(c.getNearestBlockSize(4), 4);
+        QCOMPARE(c.getNearestBlockSize(20), 16);
+        QCOMPARE(c.getNearestBlockSize(23), 16);
+        QCOMPARE(c.getNearestBlockSize(24), 16);
+        QCOMPARE(c.getNearestBlockSize(25), 32);
+        int max = c.getMaxZoomLevel();
+        QCOMPARE(c.getNearestBlockSize(max), max);
+        QCOMPARE(c.getNearestBlockSize(max+1), max);
+    }
+    
+    void powerOfTwoUp() {
+        PowerOfTwoZoomConstraint c;
+        QCOMPARE(c.getNearestBlockSize(1, ZoomConstraint::RoundUp), 1);
+        QCOMPARE(c.getNearestBlockSize(2, ZoomConstraint::RoundUp), 2);
+        QCOMPARE(c.getNearestBlockSize(3, ZoomConstraint::RoundUp), 4);
+        QCOMPARE(c.getNearestBlockSize(4, ZoomConstraint::RoundUp), 4);
+        QCOMPARE(c.getNearestBlockSize(20, ZoomConstraint::RoundUp), 32);
+        QCOMPARE(c.getNearestBlockSize(32, ZoomConstraint::RoundUp), 32);
+        QCOMPARE(c.getNearestBlockSize(33, ZoomConstraint::RoundUp), 64);
+        int max = c.getMaxZoomLevel();
+        QCOMPARE(c.getNearestBlockSize(max, ZoomConstraint::RoundUp), max);
+        QCOMPARE(c.getNearestBlockSize(max+1, ZoomConstraint::RoundUp), max);
+    }
+    
+    void powerOfTwoDown() {
+        PowerOfTwoZoomConstraint c;
+        QCOMPARE(c.getNearestBlockSize(1, ZoomConstraint::RoundDown), 1);
+        QCOMPARE(c.getNearestBlockSize(2, ZoomConstraint::RoundDown), 2);
+        QCOMPARE(c.getNearestBlockSize(3, ZoomConstraint::RoundDown), 2);
+        QCOMPARE(c.getNearestBlockSize(4, ZoomConstraint::RoundDown), 4);
+        QCOMPARE(c.getNearestBlockSize(20, ZoomConstraint::RoundDown), 16);
+        QCOMPARE(c.getNearestBlockSize(32, ZoomConstraint::RoundDown), 32);
+        QCOMPARE(c.getNearestBlockSize(33, ZoomConstraint::RoundDown), 32);
+        int max = c.getMaxZoomLevel();
+        QCOMPARE(c.getNearestBlockSize(max, ZoomConstraint::RoundDown), max);
+        QCOMPARE(c.getNearestBlockSize(max+1, ZoomConstraint::RoundDown), max);
+    }
+
+    void powerOfSqrtTwoNearest() {
+        PowerOfSqrtTwoZoomConstraint c;
+        QCOMPARE(c.getNearestBlockSize(1), 1);
+        QCOMPARE(c.getNearestBlockSize(2), 2);
+        QCOMPARE(c.getNearestBlockSize(3), 2);
+        QCOMPARE(c.getNearestBlockSize(4), 4);
+        QCOMPARE(c.getNearestBlockSize(18), 16);
+        QCOMPARE(c.getNearestBlockSize(19), 16);
+        QCOMPARE(c.getNearestBlockSize(20), 22);
+        QCOMPARE(c.getNearestBlockSize(23), 22);
+        QCOMPARE(c.getNearestBlockSize(28), 32);
+        // PowerOfSqrtTwoZoomConstraint makes an effort to ensure
+        // bigger numbers get rounded to a multiple of something
+        // simple (64 or 90 depending on whether they are power-of-two
+        // or power-of-sqrt-two types)
+        QCOMPARE(c.getNearestBlockSize(800), 720);
+        QCOMPARE(c.getNearestBlockSize(1023), 1024);
+        QCOMPARE(c.getNearestBlockSize(1024), 1024);
+        QCOMPARE(c.getNearestBlockSize(1025), 1024);
+        int max = c.getMaxZoomLevel();
+        QCOMPARE(c.getNearestBlockSize(max), max);
+        QCOMPARE(c.getNearestBlockSize(max+1), max);
+    }
+    
+    void powerOfSqrtTwoUp() {
+        PowerOfSqrtTwoZoomConstraint c;
+        QCOMPARE(c.getNearestBlockSize(1, ZoomConstraint::RoundUp), 1);
+        QCOMPARE(c.getNearestBlockSize(2, ZoomConstraint::RoundUp), 2);
+        QCOMPARE(c.getNearestBlockSize(3, ZoomConstraint::RoundUp), 4);
+        QCOMPARE(c.getNearestBlockSize(4, ZoomConstraint::RoundUp), 4);
+        QCOMPARE(c.getNearestBlockSize(18, ZoomConstraint::RoundUp), 22);
+        QCOMPARE(c.getNearestBlockSize(22, ZoomConstraint::RoundUp), 22);
+        QCOMPARE(c.getNearestBlockSize(23, ZoomConstraint::RoundUp), 32);
+        QCOMPARE(c.getNearestBlockSize(800, ZoomConstraint::RoundUp), 1024);
+        QCOMPARE(c.getNearestBlockSize(1023, ZoomConstraint::RoundUp), 1024);
+        QCOMPARE(c.getNearestBlockSize(1024, ZoomConstraint::RoundUp), 1024);
+        // see comment above
+        QCOMPARE(c.getNearestBlockSize(1025, ZoomConstraint::RoundUp), 1440);
+        int max = c.getMaxZoomLevel();
+        QCOMPARE(c.getNearestBlockSize(max, ZoomConstraint::RoundUp), max);
+        QCOMPARE(c.getNearestBlockSize(max+1, ZoomConstraint::RoundUp), max);
+    }
+    
+    void powerOfSqrtTwoDown() {
+        PowerOfSqrtTwoZoomConstraint c;
+        QCOMPARE(c.getNearestBlockSize(1, ZoomConstraint::RoundDown), 1);
+        QCOMPARE(c.getNearestBlockSize(2, ZoomConstraint::RoundDown), 2);
+        QCOMPARE(c.getNearestBlockSize(3, ZoomConstraint::RoundDown), 2);
+        QCOMPARE(c.getNearestBlockSize(4, ZoomConstraint::RoundDown), 4);
+        QCOMPARE(c.getNearestBlockSize(18, ZoomConstraint::RoundDown), 16);
+        QCOMPARE(c.getNearestBlockSize(22, ZoomConstraint::RoundDown), 22);
+        QCOMPARE(c.getNearestBlockSize(23, ZoomConstraint::RoundDown), 22);
+        // see comment above
+        QCOMPARE(c.getNearestBlockSize(800, ZoomConstraint::RoundDown), 720);
+        QCOMPARE(c.getNearestBlockSize(1023, ZoomConstraint::RoundDown), 720);
+        QCOMPARE(c.getNearestBlockSize(1024, ZoomConstraint::RoundDown), 1024);
+        QCOMPARE(c.getNearestBlockSize(1025, ZoomConstraint::RoundDown), 1024);
+        int max = c.getMaxZoomLevel();
+        QCOMPARE(c.getNearestBlockSize(max, ZoomConstraint::RoundDown), max);
+        QCOMPARE(c.getNearestBlockSize(max+1, ZoomConstraint::RoundDown), max);
+    }
+};
+
+#endif
+