package com.twelvemonkeys.image;
import org.junit.Ignore;
import org.junit.Test;
import java.awt.*;
import java.awt.color.ColorSpace;
import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.awt.image.ImageProducer;
import java.awt.image.IndexColorModel;
import java.net.URL;
import static org.junit.Assert.*;
import static org.junit.Assert.assertEquals;
/**
* BufferedImageFactoryTestCase
*
* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
* @author last modified by $Author: haraldk$
* @version $Id: BufferedImageFactoryTestCase.java,v 1.0 May 7, 2010 12:40:08 PM haraldk Exp$
*/
public class BufferedImageFactoryTestCase {
@Test(expected = IllegalArgumentException.class)
public void testCreateNullImage() {
new BufferedImageFactory((Image) null);
}
@Test(expected = IllegalArgumentException.class)
public void testCreateNullProducer() {
new BufferedImageFactory((ImageProducer) null);
}
// NPE in Toolkit, ok
@Test(expected = RuntimeException.class)
public void testGetBufferedImageErrorSourceByteArray() {
Image source = Toolkit.getDefaultToolkit().createImage((byte[]) null);
new BufferedImageFactory(source);
}
@Test(expected = IllegalArgumentException.class)
public void testGetBufferedImageErrorSourceImageProducer() {
Image source = Toolkit.getDefaultToolkit().createImage((ImageProducer) null);
new BufferedImageFactory(source);
}
// TODO: This is a quite serious bug, however, the bug is in the Toolkit, allowing such images in the first place...
// In any case, there's not much we can do, except until someone is bored and kills the app/thread... :-P
@Ignore("Bug in Toolkit")
@Test(timeout = 1000, expected = ImageConversionException.class)
public void testGetBufferedImageErrorSourceString() {
Image source = Toolkit.getDefaultToolkit().createImage((String) null);
BufferedImageFactory factory = new BufferedImageFactory(source);
factory.getBufferedImage();
}
// This is a little random, and it would be nicer if we could throw an IllegalArgumentException on create.
// Unfortunately, the API doesn't allow this...
@Test(timeout = 1000, expected = ImageConversionException.class)
public void testGetBufferedImageErrorSourceURL() {
Image source = Toolkit.getDefaultToolkit().createImage(getClass().getResource("/META-INF/MANIFEST.MF"));
BufferedImageFactory factory = new BufferedImageFactory(source);
factory.getBufferedImage();
}
@Test
public void testGetBufferedImageJPEG() {
URL resource = getClass().getResource("/sunflower.jpg");
assertNotNull(resource);
Image source = Toolkit.getDefaultToolkit().createImage(resource);
assertNotNull(source);
BufferedImageFactory factory = new BufferedImageFactory(source);
BufferedImage image = factory.getBufferedImage();
assertEquals(187, image.getWidth());
assertEquals(283, image.getHeight());
}
@Test
public void testGetColorModelJPEG() {
URL resource = getClass().getResource("/sunflower.jpg");
assertNotNull(resource);
Image source = Toolkit.getDefaultToolkit().createImage(resource);
assertNotNull(source);
BufferedImageFactory factory = new BufferedImageFactory(source);
ColorModel colorModel = factory.getColorModel();
assertNotNull(colorModel);
assertEquals(3, colorModel.getNumColorComponents()); // getNumComponents may include alpha, we don't care
assertEquals(ColorSpace.getInstance(ColorSpace.CS_sRGB), colorModel.getColorSpace());
for (int i = 0; i < colorModel.getNumComponents(); i++) {
assertEquals(8, colorModel.getComponentSize(i));
}
}
@Test
public void testGetBufferedImageGIF() {
URL resource = getClass().getResource("/tux.gif");
assertNotNull(resource);
Image source = Toolkit.getDefaultToolkit().createImage(resource);
assertNotNull(source);
BufferedImageFactory factory = new BufferedImageFactory(source);
BufferedImage image = factory.getBufferedImage();
assertEquals(250, image.getWidth());
assertEquals(250, image.getHeight());
assertEquals(Transparency.BITMASK, image.getTransparency());
// All corners of image should be fully transparent
assertEquals(0, image.getRGB(0, 0) >>> 24);
assertEquals(0, image.getRGB(249, 0) >>> 24);
assertEquals(0, image.getRGB(0, 249) >>> 24);
assertEquals(0, image.getRGB(249, 249) >>> 24);
}
@Test
public void testGetColorModelGIF() {
URL resource = getClass().getResource("/tux.gif");
assertNotNull(resource);
Image source = Toolkit.getDefaultToolkit().createImage(resource);
assertNotNull(source);
BufferedImageFactory factory = new BufferedImageFactory(source);
ColorModel colorModel = factory.getColorModel();
assertNotNull(colorModel);
assertEquals(3, colorModel.getNumColorComponents());
assertEquals(ColorSpace.getInstance(ColorSpace.CS_sRGB), colorModel.getColorSpace());
assertTrue(colorModel instanceof IndexColorModel);
assertTrue(colorModel.hasAlpha());
assertEquals(4, colorModel.getNumComponents());
assertTrue(((IndexColorModel) colorModel).getTransparentPixel() >= 0);
assertEquals(Transparency.BITMASK, colorModel.getTransparency());
for (int i = 0; i < colorModel.getNumComponents(); i++) {
assertEquals(8, colorModel.getComponentSize(i));
}
}
@Test
public void testGetBufferedImageSubsampled() {
URL resource = getClass().getResource("/sunflower.jpg");
assertNotNull(resource);
Image source = Toolkit.getDefaultToolkit().createImage(resource);
assertNotNull(source);
BufferedImageFactory factory = new BufferedImageFactory(source);
BufferedImage original = factory.getBufferedImage();
factory.setSourceSubsampling(2, 2);
BufferedImage image = factory.getBufferedImage(); // Accidentally also tests reuse...
// Values rounded up
assertEquals(94, image.getWidth());
assertEquals(142, image.getHeight());
for (int y = 0; y < image.getHeight(); y++) {
for (int x = 0; x < image.getWidth(); x++) {
assertEquals("RGB[" + x + ", " + y + "]", original.getRGB(x * 2, y * 2), image.getRGB(x, y));
}
}
}
@Test
public void testGetBufferedImageSourceRegion() {
URL resource = getClass().getResource("/sunflower.jpg");
assertNotNull(resource);
Image source = Toolkit.getDefaultToolkit().createImage(resource);
assertNotNull(source);
BufferedImageFactory factory = new BufferedImageFactory(source);
BufferedImage original = factory.getBufferedImage();
factory.setSourceRegion(new Rectangle(40, 40, 40, 40));
BufferedImage image = factory.getBufferedImage(); // Accidentally also tests reuse...
assertEquals(40, image.getWidth());
assertEquals(40, image.getHeight());
for (int y = 0; y < image.getHeight(); y++) {
for (int x = 0; x < image.getWidth(); x++) {
assertEquals("RGB[" + x + ", " + y + "]", original.getRGB(40 + x, 40 + y), image.getRGB(x, y));
}
}
}
@Test
public void testGetBufferedImageSubsampledSourceRegion() throws Exception{
URL resource = getClass().getResource("/sunflower.jpg");
assertNotNull(resource);
Image source = Toolkit.getDefaultToolkit().createImage(resource);
assertNotNull(source);
BufferedImageFactory factory = new BufferedImageFactory(source);
BufferedImage original = factory.getBufferedImage();
factory.setSourceRegion(new Rectangle(40, 40, 40, 40));
factory.setSourceSubsampling(2, 2);
BufferedImage image = factory.getBufferedImage(); // Accidentally also tests reuse...
assertEquals(20, image.getWidth());
assertEquals(20, image.getHeight());
for (int y = 0; y < image.getHeight(); y++) {
for (int x = 0; x < image.getWidth(); x++) {
assertEquals("RGB[" + x + ", " + y + "]", original.getRGB(40 + x * 2, 40 + y * 2), image.getRGB(x, y));
}
}
}
@Test
public void testAbort() throws Exception {
URL resource = getClass().getResource("/sunflower.jpg");
assertNotNull(resource);
Image source = Toolkit.getDefaultToolkit().createImage(resource);
assertNotNull(source);
final BufferedImageFactory factory = new BufferedImageFactory(source);
// Listener should abort ASAP
factory.addProgressListener(new BufferedImageFactory.ProgressListener() {
public void progress(BufferedImageFactory pFactory, float pPercentage) {
if (pPercentage > 5) {
pFactory.abort();
}
}
});
BufferedImage image = factory.getBufferedImage();
assertEquals(187, image.getWidth());
assertEquals(283, image.getHeight());
// Upper right should be loaded
assertEquals((image.getRGB(186, 0) & 0xFF0000) >> 16 , 0x68, 10);
assertEquals((image.getRGB(186, 0) & 0xFF00) >> 8, 0x91, 10);
assertEquals(image.getRGB(186, 0) & 0xFF, 0xE0, 10);
// Lower right should be blank
assertEquals(image.getRGB(186, 282) & 0xFFFFFF, 0);
}
@Test
public void testListener() {
URL resource = getClass().getResource("/sunflower.jpg");
assertNotNull(resource);
Image source = Toolkit.getDefaultToolkit().createImage(resource);
assertNotNull(source);
BufferedImageFactory factory = new BufferedImageFactory(source);
VerifyingListener listener = new VerifyingListener(factory);
factory.addProgressListener(listener);
factory.getBufferedImage();
listener.verify(100f);
}
@Test
public void testRemoveListener() {
URL resource = getClass().getResource("/sunflower.jpg");
assertNotNull(resource);
Image source = Toolkit.getDefaultToolkit().createImage(resource);
assertNotNull(source);
BufferedImageFactory factory = new BufferedImageFactory(source);
VerifyingListener listener = new VerifyingListener(factory);
factory.addProgressListener(listener);
factory.removeProgressListener(listener);
factory.getBufferedImage();
listener.verify(0);
}
@Test
public void testRemoveNullListener() {
URL resource = getClass().getResource("/sunflower.jpg");
assertNotNull(resource);
Image source = Toolkit.getDefaultToolkit().createImage(resource);
assertNotNull(source);
BufferedImageFactory factory = new BufferedImageFactory(source);
VerifyingListener listener = new VerifyingListener(factory);
factory.addProgressListener(listener);
factory.removeProgressListener(null);
factory.getBufferedImage();
listener.verify(100);
}
@Test
public void testRemoveNotAdddedListener() {
URL resource = getClass().getResource("/sunflower.jpg");
assertNotNull(resource);
Image source = Toolkit.getDefaultToolkit().createImage(resource);
assertNotNull(source);
BufferedImageFactory factory = new BufferedImageFactory(source);
VerifyingListener listener = new VerifyingListener(factory);
factory.addProgressListener(listener);
factory.removeProgressListener(new BufferedImageFactory.ProgressListener() {
public void progress(BufferedImageFactory pFactory, float pPercentage) {
}
});
factory.getBufferedImage();
listener.verify(100);
}
@Test
public void testRemoveAllListeners() {
URL resource = getClass().getResource("/sunflower.jpg");
assertNotNull(resource);
Image source = Toolkit.getDefaultToolkit().createImage(resource);
assertNotNull(source);
BufferedImageFactory factory = new BufferedImageFactory(source);
VerifyingListener listener = new VerifyingListener(factory);
VerifyingListener listener2 = new VerifyingListener(factory);
factory.addProgressListener(listener);
factory.addProgressListener(listener);
factory.addProgressListener(listener2);
factory.removeAllProgressListeners();
factory.getBufferedImage();
listener.verify(0);
listener2.verify(0);
}
private static class VerifyingListener implements BufferedImageFactory.ProgressListener {
private final BufferedImageFactory factory;
private float progress;
public VerifyingListener(BufferedImageFactory factory) {
this.factory = factory;
}
public void progress(BufferedImageFactory pFactory, float pPercentage) {
assertEquals(factory, pFactory);
assertTrue(pPercentage >= progress && pPercentage <= 100f);
progress = pPercentage;
}
public void verify(final float expectedProgress) {
assertEquals(expectedProgress, progress, .1f); // Sanity test that the listener was invoked
}
}
}