/*
* Copyright (C) 2015 Patryk Strach
*
* This file is part of Virtual Slide Viewer.
*
* Virtual Slide Viewer 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 3 of the License, or (at your option) any later version.
*
* Virtual Slide Viewer 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with Virtual Slide Viewer.
* If not, see <http://www.gnu.org/licenses/>.
*/
package virtualslideviewer.imageviewing;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.*;
import java.awt.Dimension;
import java.awt.Rectangle;
import org.junit.Before;
import org.junit.Test;
import org.mockito.Mockito;
import virtualslideviewer.core.BufferedVirtualSlideImage;
import virtualslideviewer.core.ImageIndex;
import virtualslideviewer.core.Tile;
import virtualslideviewer.imageviewing.DifferentResolutionsTileGenerator;
import virtualslideviewer.testutils.TestUtil;
public class DifferentResolutionsTileGeneratorTest
{
private BufferedVirtualSlideImage mImageMock = TestUtil.createImageMockWithDefaultParameters();
@Before
public void setUp() throws Exception
{
Mockito.when(mImageMock.getResolutionCount()).thenReturn(4);
Mockito.when(mImageMock.getImageSize(3)).thenReturn(new Dimension(40, 40));
Mockito.when(mImageMock.getImageSize(2)).thenReturn(new Dimension(20, 20));
Mockito.when(mImageMock.getImageSize(1)).thenReturn(new Dimension(10, 10));
Mockito.when(mImageMock.getImageSize(0)).thenReturn(new Dimension( 5, 5));
Mockito.when(mImageMock.getTileSize(Mockito.anyInt())).thenReturn(new Dimension(4, 4));
Mockito.when(mImageMock.isImageInCache(Mockito.any(), Mockito.any())).thenReturn(false);
}
@Test
public void testGeneratingOfTileFromLowerResolutionWhenItIsInCache()
{
Tile tileToGenerate = new Tile(1, 2, new ImageIndex(2));
int resolutionToUse = 1;
Rectangle tileBoundsInLowerRes = new Rectangle(2, 4, 2, 2);
byte[] pixelsInLowerRes = new byte[] {
0, 1,
2, 3
};
byte[] expectedResult = new byte[] {
0, 0, 1, 1,
0, 0, 1, 1,
2, 2, 3, 3,
2, 2, 3, 3
};
testGeneratedTileIsEqualToExpected(tileToGenerate, resolutionToUse, tileBoundsInLowerRes, pixelsInLowerRes, expectedResult);
}
@Test
public void testGeneratingOfTileFromSecondLowerResolutionWhenItIsInCache()
{
Tile tileToGenerate = new Tile(1, 2, new ImageIndex(3));
int resolutionToUse = 1;
Rectangle tileBoundsInSecondLowerRes = new Rectangle(1, 2, 1, 1);
byte[] pixelsInSecondLowerRes = new byte[] { 8 };
byte[] expectedResult = new byte[] {
8, 8, 8, 8,
8, 8, 8, 8,
8, 8, 8, 8,
8, 8, 8, 8
};
testGeneratedTileIsEqualToExpected(tileToGenerate, resolutionToUse, tileBoundsInSecondLowerRes, pixelsInSecondLowerRes, expectedResult);
}
@Test
public void testGeneratingOfTileFromHigherResolutionWhenItIsInCache()
{
Tile tileToGenerate = new Tile(1, 2, new ImageIndex(2));
int resolutionToUse = 3;
Rectangle tileBoundsInHigherRes = new Rectangle(8, 16, 8, 8);
byte[] pixelsInHigherInRes = new byte[] {
0, 1, 2, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23,
24, 25, 26, 27, 28, 29, 30, 31,
32, 33, 34, 35, 36, 37, 38, 39,
40, 41, 42, 43, 44, 45, 46, 47,
48, 49, 50, 51, 52, 53, 54, 55,
56, 57, 58, 59, 60, 61, 62, 63
};
// Nearest Neighbour interpolation
byte[] expectedResult = new byte[] {
9, 11, 13, 15,
25, 27, 29, 31,
41, 43, 45, 47,
57, 59, 61, 63
};
testGeneratedTileIsEqualToExpected(tileToGenerate, resolutionToUse, tileBoundsInHigherRes, pixelsInHigherInRes, expectedResult);
}
@Test
public void testGeneratingOfTileFromThumbnailWhenOtherResolutionsAreNotInCache()
{
Tile tileToGenerate = new Tile(1, 2, new ImageIndex(2));
int resolutionToUse = 0;
Rectangle tileBoundsInThumbnail = new Rectangle(1, 2, 1, 1);
byte[] pixelsInThumbnail = new byte[] { 5 };
byte[] expectedResult = new byte[] {
5, 5, 5, 5,
5, 5, 5, 5,
5, 5, 5, 5,
5, 5, 5, 5
};
testGeneratedTileIsEqualToExpected(tileToGenerate, resolutionToUse, tileBoundsInThumbnail, pixelsInThumbnail, expectedResult);
}
@Test
public void testGeneratingOfTileHandlesPartialTiles()
{
Tile tileToGenerate = new Tile(2, 1, new ImageIndex(1));
int resolutionToUse = 0;
Rectangle tileBoundsInLowerRes = new Rectangle(4, 2, 1, 2);
byte[] pixelsInLowerRes = new byte[] {
5,
6
};
byte[] expectedResult = new byte[] {
5, 5,
5, 5,
6, 6,
6, 6
};
testGeneratedTileIsEqualToExpected(tileToGenerate, resolutionToUse, tileBoundsInLowerRes, pixelsInLowerRes, expectedResult);
}
private void testGeneratedTileIsEqualToExpected(Tile tileToGenerate, int resolutionToUse, Rectangle tileBoundsInUsedResolution,
byte[] pixelsInTileBounds, byte[] expectedResult)
{
Mockito.when(mImageMock.isImageInCache(tileBoundsInUsedResolution, new ImageIndex(resolutionToUse))).thenReturn(true);
TestUtil.copyToParameter(pixelsInTileBounds)
.when(mImageMock).getPixels(Mockito.any(), Mockito.eq(tileBoundsInUsedResolution), Mockito.eq(new ImageIndex(resolutionToUse)));
byte[] result = new byte[expectedResult.length];
new DifferentResolutionsTileGenerator().getTilePlaceholder(result, mImageMock, tileToGenerate);
Mockito.verify(mImageMock).getPixels(Mockito.any(), Mockito.eq(tileBoundsInUsedResolution), Mockito.eq(new ImageIndex(resolutionToUse)));
assertThat(result, is(expectedResult));
}
}