Added new tests for apply and crop.

src/test/java/org/imgscalr/AbstractScalrTest.java

@@ -0,0 +1,66 @@
+package org.imgscalr;
+
+import java.awt.image.BufferedImage;
+import java.io.FileOutputStream;
+import java.io.IOException;
+
+import javax.imageio.ImageIO;
+
+import org.junit.AfterClass;
+import org.junit.Assert;
+import org.junit.BeforeClass;
+
+public abstract class AbstractScalrTest {
+	protected static BufferedImage src;
+
+	@BeforeClass
+	public static void setup() throws IOException {
+		src = load("time-square.png");
+	}
+
+	@AfterClass
+	public static void tearDown() {
+		src.flush();
+	}
+
+	protected static BufferedImage load(String name) {
+		BufferedImage i = null;
+
+		try {
+			i = ImageIO.read(AbstractScalrTest.class.getResource(name));
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+
+		return i;
+	}
+
+	protected static void save(BufferedImage image, String name) {
+		try {
+			ImageIO.write(image, "PNG", new FileOutputStream(name));
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+	}
+
+	protected static void assertEquals(BufferedImage orig, BufferedImage tmp)
+			throws AssertionError {
+		// Ensure neither image is null.
+		Assert.assertNotNull(orig);
+		Assert.assertNotNull(tmp);
+
+		// Ensure dimensions are equal.
+		Assert.assertEquals(orig.getWidth(), tmp.getWidth());
+		Assert.assertEquals(orig.getHeight(), tmp.getHeight());
+
+		int w = orig.getWidth();
+		int h = orig.getHeight();
+
+		// Ensure every pixel RGB is the same.
+		for (int i = 0; i < w; i++) {
+			for (int j = 0; j < h; j++) {
+				Assert.assertEquals(orig.getRGB(i, j), tmp.getRGB(i, j));
+			}
+		}
+	}
+}

src/test/java/org/imgscalr/ScalrApplyTest.java

@@ -0,0 +1,37 @@
+package org.imgscalr;
+
+import static org.imgscalr.Scalr.OP_ANTIALIAS;
+import static org.imgscalr.Scalr.OP_BRIGHTER;
+import static org.imgscalr.Scalr.OP_DARKER;
+import static org.imgscalr.Scalr.OP_GRAYSCALE;
+import static org.imgscalr.Scalr.apply;
+
+import java.awt.image.BufferedImageOp;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class ScalrApplyTest extends AbstractScalrTest {
+	@Test
+	public void testApplyEX() {
+		try {
+			apply(src, (BufferedImageOp[]) null);
+			Assert.assertTrue(false);
+		} catch (Exception e) {
+			Assert.assertTrue(true);
+		}
+	}
+
+	@Test
+	public void testApply1() {
+		assertEquals(load("time-square-apply-1.png"), apply(src, OP_ANTIALIAS));
+	}
+
+	@Test
+	public void testApply4() {
+		assertEquals(
+				load("time-square-apply-4.png"),
+				apply(src, Scalr.OP_ANTIALIAS, OP_BRIGHTER, OP_DARKER,
+						OP_GRAYSCALE));
+	}
+}

src/test/java/org/imgscalr/ScalrCropTest.java

@@ -0,0 +1,43 @@
+package org.imgscalr;
+
+import static org.imgscalr.Scalr.crop;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class ScalrCropTest extends AbstractScalrTest {
+	@Test
+	public void testCropEX() {
+		try {
+			crop(src, 3200, 2400);
+			Assert.assertTrue(false);
+		} catch (Exception e) {
+			Assert.assertTrue(true);
+		}
+
+		try {
+			crop(src, -8, -10, 100, 100);
+			Assert.assertTrue(false);
+		} catch (Exception e) {
+			Assert.assertTrue(true);
+		}
+
+		try {
+			crop(src, -100, -200, -4, -4);
+			Assert.assertTrue(false);
+		} catch (Exception e) {
+			Assert.assertTrue(true);
+		}
+	}
+
+	@Test
+	public void testCropWH() {
+		assertEquals(load("time-square-crop-wh.png"), crop(src, 320, 240));
+	}
+
+	@Test
+	public void testCropXYWH() {
+		assertEquals(load("time-square-crop-xywh.png"),
+				crop(src, 100, 100, 320, 240));
+	}
+}