/*
* Copyright 2010, 2011, 2012 mapsforge.org
*
* This program is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.mapsforge.map.writer;
import java.util.ArrayList;
import java.util.List;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
public class DeltaEncoderTest {
private List<Integer> mockCoordinates;
@Before
public void setUp() {
this.mockCoordinates = new ArrayList<Integer>();
this.mockCoordinates.add(Integer.valueOf(52000000));
this.mockCoordinates.add(Integer.valueOf(13000000));
this.mockCoordinates.add(Integer.valueOf(52000100));
this.mockCoordinates.add(Integer.valueOf(13000100));
this.mockCoordinates.add(Integer.valueOf(52000500));
this.mockCoordinates.add(Integer.valueOf(13000500));
this.mockCoordinates.add(Integer.valueOf(52000400));
this.mockCoordinates.add(Integer.valueOf(13000400));
this.mockCoordinates.add(Integer.valueOf(52000800));
this.mockCoordinates.add(Integer.valueOf(13000800));
this.mockCoordinates.add(Integer.valueOf(52001000));
this.mockCoordinates.add(Integer.valueOf(13001000));
}
@Test
public void testDeltaEncode() {
List<Integer> deltaEncoded = DeltaEncoder.deltaEncode(this.mockCoordinates);
Assert.assertEquals(Integer.valueOf(52000000), deltaEncoded.get(0));
Assert.assertEquals(Integer.valueOf(13000000), deltaEncoded.get(1));
Assert.assertEquals(Integer.valueOf(100), deltaEncoded.get(2));
Assert.assertEquals(Integer.valueOf(100), deltaEncoded.get(3));
Assert.assertEquals(Integer.valueOf(400), deltaEncoded.get(4));
Assert.assertEquals(Integer.valueOf(400), deltaEncoded.get(5));
Assert.assertEquals(Integer.valueOf(-100), deltaEncoded.get(6));
Assert.assertEquals(Integer.valueOf(-100), deltaEncoded.get(7));
Assert.assertEquals(Integer.valueOf(400), deltaEncoded.get(8));
Assert.assertEquals(Integer.valueOf(400), deltaEncoded.get(9));
Assert.assertEquals(Integer.valueOf(200), deltaEncoded.get(10));
Assert.assertEquals(Integer.valueOf(200), deltaEncoded.get(11));
}
@Test
public void testDoubleDeltaEncode() {
List<Integer> ddeltaEncoded = DeltaEncoder.doubleDeltaEncode(this.mockCoordinates);
Assert.assertEquals(Integer.valueOf(52000000), ddeltaEncoded.get(0));
Assert.assertEquals(Integer.valueOf(13000000), ddeltaEncoded.get(1));
Assert.assertEquals(Integer.valueOf(100), ddeltaEncoded.get(2));
Assert.assertEquals(Integer.valueOf(100), ddeltaEncoded.get(3));
Assert.assertEquals(Integer.valueOf(300), ddeltaEncoded.get(4));
Assert.assertEquals(Integer.valueOf(300), ddeltaEncoded.get(5));
Assert.assertEquals(Integer.valueOf(-500), ddeltaEncoded.get(6));
Assert.assertEquals(Integer.valueOf(-500), ddeltaEncoded.get(7));
Assert.assertEquals(Integer.valueOf(500), ddeltaEncoded.get(8));
Assert.assertEquals(Integer.valueOf(500), ddeltaEncoded.get(9));
Assert.assertEquals(Integer.valueOf(-200), ddeltaEncoded.get(10));
Assert.assertEquals(Integer.valueOf(-200), ddeltaEncoded.get(11));
}
}