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Added unit tests and fixed some naming issues.

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This commit is contained in:
Maja Joksovic 2020-06-17 22:57:20 +02:00
parent 4020798958
commit bc71da5e02
10 changed files with 546 additions and 14 deletions
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2
image-processing/src/main/java/com/baeldung/image/resize/core/Graphics2DExample.java
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@ -20,6 +20,6 @@ public class Graphics2DExample {
public static void main(String[] args) throws IOException {
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
BufferedImage outputImage = resizeImage(originalImage, 200, 200);
ImageIO.write(outputImage, "jpg", new File("src/main/resources/images/sampleImage1.jpg"));
ImageIO.write(outputImage, "jpg", new File("src/main/resources/images/sampleImage-resized-graphics2d.jpg"));
}
}

2
image-processing/src/main/java/com/baeldung/image/resize/core/ImageScaledInstanceExample.java
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@ -19,6 +19,6 @@ public class ImageScaledInstanceExample {
public static void main(String[] args) throws IOException {
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
BufferedImage outputImage = resizeImage(originalImage, 200, 200);
ImageIO.write(outputImage, "jpg", new File("src/main/resources/images/sampleImage1.jpg"));
ImageIO.write(outputImage, "jpg", new File("src/main/resources/images/sampleImage-resized-scaledinstance.jpg"));
}
}

10
image-processing/src/main/java/com/baeldung/image/resize/imagescalr/ImagescalrExample.java → image-processing/src/main/java/com/baeldung/image/resize/imgscalr/ImgscalrExample.java
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@ -1,4 +1,4 @@
package com.baeldung.image.resize.imagescalr;
package com.baeldung.image.resize.imgscalr;
import java.awt.image.BufferedImage;
import java.io.File;
@ -7,18 +7,18 @@ import javax.imageio.ImageIO;
import org.imgscalr.Scalr;
public class ImagescalrExample {
static BufferedImage simpleResizeImage(BufferedImage originalImage, int targetWidth) throws Exception {
public class ImgscalrExample {
public static BufferedImage simpleResizeImage(BufferedImage originalImage, int targetWidth) throws Exception {
return Scalr.resize(originalImage, targetWidth);
}
static BufferedImage resizeImage(BufferedImage originalImage, int targetWidth, int targetHeight) throws Exception {
public static BufferedImage resizeImage(BufferedImage originalImage, int targetWidth, int targetHeight) throws Exception {
return Scalr.resize(originalImage, Scalr.Method.AUTOMATIC, Scalr.Mode.AUTOMATIC, targetWidth, targetHeight, Scalr.OP_ANTIALIAS);
}
public static void main(String[] args) throws Exception {
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
BufferedImage outputImage = resizeImage(originalImage, 200, 200);
ImageIO.write(outputImage, "jpg", new File("src/main/resources/images/sampleImage1.jpg"));
ImageIO.write(outputImage, "jpg", new File("src/main/resources/images/sampleImage-resized-imgscalr.jpg"));
}
}

19
image-processing/src/main/java/com/baeldung/image/resize/marvin/MarvinExample.java
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@ -1,22 +1,29 @@
package com.baeldung.image.resize.marvin;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import org.marvinproject.image.transform.scale.Scale;
import marvin.image.MarvinImage;
import marvin.io.MarvinImageIO;
public class MarvinExample {
static void resizeImage(String originalImagePath, int targetWidth, int targetHeight, String outputImagePath) {
MarvinImage image = MarvinImageIO.loadImage(originalImagePath);
static BufferedImage resizeImage(BufferedImage originalImage, int targetWidth, int targetHeight) {
MarvinImage image = new MarvinImage(originalImage);
Scale scale = new Scale();
scale.load();
scale.setAttribute("newWidth", targetWidth);
scale.setAttribute("newHeight", targetHeight);
scale.process(image.clone(), image, null, null, false);
MarvinImageIO.saveImage(image, outputImagePath);
return image.getBufferedImage();
}
public static void main(String args[]) {
resizeImage("src/main/resources/images/sampleImage.jpg", 200, 200, "src/main/resources/images/sampleImage1.jpg");
public static void main(String args[]) throws IOException {
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
BufferedImage outputImage = resizeImage(originalImage, 200, 200);
ImageIO.write(outputImage, "jpg", new File("src/main/resources/images/sampleImage-resized-marvin.jpg"));
}
}

2
image-processing/src/main/java/com/baeldung/image/resize/thumbnailator/ThumbnailatorExample.java
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@ -25,6 +25,6 @@ public class ThumbnailatorExample {
public static void main(String[] args) throws Exception {
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
BufferedImage outputImage = resizeImage(originalImage, 200, 200);
ImageIO.write(outputImage, "jpg", new File("src/main/resources/images/sampleImage1.jpg"));
ImageIO.write(outputImage, "jpg", new File("src/main/resources/images/sampleImage-resized-thumbnailator.jpg"));
}
}

105
image-processing/src/test/java/com/baeldung/image/resize/core/Graphics2DExampleTest.java Normal file
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@ -0,0 +1,105 @@
package com.baeldung.image.resize.core;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotEquals;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import org.junit.Test;
public class Graphics2DExampleTest {
@Test
public void whenOriginalImageExistsAndTargetSizesAreNotZero_thenImageGeneratedWithoutError() throws IOException {
int targetWidth = 200;
int targetHeight = 200;
BufferedImage outputImage = null;
boolean errorThrown = false;
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
try {
outputImage = Graphics2DExample.resizeImage(originalImage, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertFalse(errorThrown);
assertNotNull(outputImage);
}
@Test
public void whenOriginalImageExistsAndTargetSizesAreNotZero_thenOutputImageSizeIsValid() throws Exception {
int targetWidth = 200;
int targetHeight = 200;
boolean errorThrown = false;
BufferedImage outputImage = null;
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
assertNotEquals(originalImage.getWidth(), targetWidth);
assertNotEquals(originalImage.getHeight(), targetHeight);
try {
outputImage = Graphics2DExample.resizeImage(originalImage, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertFalse(errorThrown);
assertEquals(outputImage.getWidth(), targetWidth);
assertEquals(outputImage.getHeight(), targetHeight);
}
@Test
public void whenTargetWidthIsZero_thenErrorIsThrown() throws IOException {
int targetWidth = 0;
int targetHeight = 200;
boolean errorThrown = false;
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
BufferedImage outputImage = null;
try {
outputImage = Graphics2DExample.resizeImage(originalImage, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertTrue(errorThrown);
assertNull(outputImage);
}
@Test
public void whenTargetHeightIsZero_thenErrorIsThrown() throws IOException {
int targetWidth = 200;
int targetHeight = 0;
boolean errorThrown = false;
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
BufferedImage outputImage = null;
try {
outputImage = Graphics2DExample.resizeImage(originalImage, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertTrue(errorThrown);
assertNull(outputImage);
}
@Test
public void whenOriginalImageDoesNotExist_thenErrorIsThrown() throws IOException {
int targetWidth = 200;
int targetHeight = 200;
boolean errorThrown = false;
BufferedImage outputImage = null;
try {
outputImage = Graphics2DExample.resizeImage(null, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertTrue(errorThrown);
assertNull(outputImage);
}
}

105
image-processing/src/test/java/com/baeldung/image/resize/core/ImageScaledInstanceExampleTest.java Normal file
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@ -0,0 +1,105 @@
package com.baeldung.image.resize.core;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotEquals;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import org.junit.Test;
public class ImageScaledInstanceExampleTest {
@Test
public void whenOriginalImageExistsAndTargetSizesAreNotZero_thenImageGeneratedWithoutError() throws IOException {
int targetWidth = 200;
int targetHeight = 200;
BufferedImage outputImage = null;
boolean errorThrown = false;
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
try {
outputImage = ImageScaledInstanceExample.resizeImage(originalImage, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertFalse(errorThrown);
assertNotNull(outputImage);
}
@Test
public void whenOriginalImageExistsAndTargetSizesAreNotZero_thenOutputImageSizeIsValid() throws Exception {
int targetWidth = 200;
int targetHeight = 200;
boolean errorThrown = false;
BufferedImage outputImage = null;
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
assertNotEquals(originalImage.getWidth(), targetWidth);
assertNotEquals(originalImage.getHeight(), targetHeight);
try {
outputImage = ImageScaledInstanceExample.resizeImage(originalImage, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertFalse(errorThrown);
assertEquals(outputImage.getWidth(), targetWidth);
assertEquals(outputImage.getHeight(), targetHeight);
}
@Test
public void whenTargetWidthIsZero_thenErrorIsThrown() throws IOException {
int targetWidth = 0;
int targetHeight = 200;
boolean errorThrown = false;
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
BufferedImage outputImage = null;
try {
outputImage = ImageScaledInstanceExample.resizeImage(originalImage, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertTrue(errorThrown);
assertNull(outputImage);
}
@Test
public void whenTargetHeightIsZero_thenErrorIsThrown() throws IOException {
int targetWidth = 200;
int targetHeight = 0;
boolean errorThrown = false;
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
BufferedImage outputImage = null;
try {
outputImage = ImageScaledInstanceExample.resizeImage(originalImage, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertTrue(errorThrown);
assertNull(outputImage);
}
@Test
public void whenOriginalImageDoesNotExist_thenErrorIsThrown() throws IOException {
int targetWidth = 200;
int targetHeight = 200;
boolean errorThrown = false;
BufferedImage outputImage = null;
try {
outputImage = ImageScaledInstanceExample.resizeImage(null, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertTrue(errorThrown);
assertNull(outputImage);
}
}

105
image-processing/src/test/java/com/baeldung/image/resize/imgscalr/ImgscalrExampleTest.java Normal file
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@ -0,0 +1,105 @@
package com.baeldung.image.resize.imgscalr;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotEquals;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import org.junit.Test;
public class ImgscalrExampleTest {
@Test
public void whenOriginalImageExistsAndTargetSizesAreNotZero_thenImageGeneratedWithoutError() throws IOException {
int targetWidth = 200;
int targetHeight = 200;
BufferedImage outputImage = null;
boolean errorThrown = false;
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
try {
outputImage = ImgscalrExample.resizeImage(originalImage, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertFalse(errorThrown);
assertNotNull(outputImage);
}
@Test
public void whenOriginalImageExistsAndTargetSizesAreNotZero_thenOutputImageSizeIsValid() throws Exception {
int targetWidth = 200;
int targetHeight = 200;
boolean errorThrown = false;
BufferedImage outputImage = null;
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
assertNotEquals(originalImage.getWidth(), targetWidth);
assertNotEquals(originalImage.getHeight(), targetHeight);
try {
outputImage = ImgscalrExample.resizeImage(originalImage, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertFalse(errorThrown);
assertEquals(outputImage.getWidth(), targetWidth);
assertEquals(outputImage.getHeight(), targetHeight);
}
@Test
public void whenTargetWidthIsZero_thenErrorIsThrown() throws IOException {
int targetWidth = 0;
int targetHeight = 200;
boolean errorThrown = false;
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
BufferedImage outputImage = null;
try {
outputImage = ImgscalrExample.resizeImage(originalImage, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertTrue(errorThrown);
assertNull(outputImage);
}
@Test
public void whenTargetHeightIsZero_thenErrorIsThrown() throws IOException {
int targetWidth = 200;
int targetHeight = 0;
boolean errorThrown = false;
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
BufferedImage outputImage = null;
try {
outputImage = ImgscalrExample.resizeImage(originalImage, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertTrue(errorThrown);
assertNull(outputImage);
}
@Test
public void whenOriginalImageDoesNotExist_thenErrorIsThrown() throws IOException {
int targetWidth = 200;
int targetHeight = 200;
boolean errorThrown = false;
BufferedImage outputImage = null;
try {
outputImage = ImgscalrExample.resizeImage(null, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertTrue(errorThrown);
assertNull(outputImage);
}
}

105
image-processing/src/test/java/com/baeldung/image/resize/marvin/MarvinExampleTest.java Normal file
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@ -0,0 +1,105 @@
package com.baeldung.image.resize.marvin;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotEquals;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import org.junit.Test;
public class MarvinExampleTest {
@Test
public void whenOriginalImageExistsAndTargetSizesAreNotZero_thenImageGeneratedWithoutError() throws IOException {
int targetWidth = 200;
int targetHeight = 200;
BufferedImage outputImage = null;
boolean errorThrown = false;
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
try {
outputImage = MarvinExample.resizeImage(originalImage, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertFalse(errorThrown);
assertNotNull(outputImage);
}
@Test
public void whenOriginalImageExistsAndTargetSizesAreNotZero_thenOutputImageSizeIsValid() throws Exception {
int targetWidth = 200;
int targetHeight = 200;
boolean errorThrown = false;
BufferedImage outputImage = null;
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
assertNotEquals(originalImage.getWidth(), targetWidth);
assertNotEquals(originalImage.getHeight(), targetHeight);
try {
outputImage = MarvinExample.resizeImage(originalImage, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertFalse(errorThrown);
assertEquals(outputImage.getWidth(), targetWidth);
assertEquals(outputImage.getHeight(), targetHeight);
}
@Test
public void whenTargetWidthIsZero_thenErrorIsThrown() throws IOException {
int targetWidth = 0;
int targetHeight = 200;
boolean errorThrown = false;
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
BufferedImage outputImage = null;
try {
outputImage = MarvinExample.resizeImage(originalImage, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertTrue(errorThrown);
assertNull(outputImage);
}
@Test
public void whenTargetHeightIsZero_thenErrorIsThrown() throws IOException {
int targetWidth = 200;
int targetHeight = 0;
boolean errorThrown = false;
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
BufferedImage outputImage = null;
try {
outputImage = MarvinExample.resizeImage(originalImage, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertTrue(errorThrown);
assertNull(outputImage);
}
@Test
public void whenOriginalImageDoesNotExist_thenErrorIsThrown() throws IOException {
int targetWidth = 200;
int targetHeight = 200;
boolean errorThrown = false;
BufferedImage outputImage = null;
try {
outputImage = MarvinExample.resizeImage(null, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertTrue(errorThrown);
assertNull(outputImage);
}
}

105
image-processing/src/test/java/com/baeldung/image/resize/thumbnailator/ThumbnailatorExampleTest.java Normal file
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@ -0,0 +1,105 @@
package com.baeldung.image.resize.thumbnailator;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotEquals;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import org.junit.Test;
public class ThumbnailatorExampleTest {
@Test
public void whenOriginalImageExistsAndTargetSizesAreNotZero_thenImageGeneratedWithoutError() throws IOException {
int targetWidth = 200;
int targetHeight = 200;
BufferedImage outputImage = null;
boolean errorThrown = false;
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
try {
outputImage = ThumbnailatorExample.resizeImage(originalImage, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertFalse(errorThrown);
assertNotNull(outputImage);
}
@Test
public void whenOriginalImageExistsAndTargetSizesAreNotZero_thenOutputImageSizeIsValid() throws Exception {
int targetWidth = 200;
int targetHeight = 200;
boolean errorThrown = false;
BufferedImage outputImage = null;
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
assertNotEquals(originalImage.getWidth(), targetWidth);
assertNotEquals(originalImage.getHeight(), targetHeight);
try {
outputImage = ThumbnailatorExample.resizeImage(originalImage, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertFalse(errorThrown);
assertEquals(outputImage.getWidth(), targetWidth);
assertEquals(outputImage.getHeight(), targetHeight);
}
@Test
public void whenTargetWidthIsZero_thenErrorIsThrown() throws IOException {
int targetWidth = 0;
int targetHeight = 200;
boolean errorThrown = false;
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
BufferedImage outputImage = null;
try {
outputImage = ThumbnailatorExample.resizeImage(originalImage, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertTrue(errorThrown);
assertNull(outputImage);
}
@Test
public void whenTargetHeightIsZero_thenErrorIsThrown() throws IOException {
int targetWidth = 200;
int targetHeight = 0;
boolean errorThrown = false;
BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
BufferedImage outputImage = null;
try {
outputImage = ThumbnailatorExample.resizeImage(originalImage, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertTrue(errorThrown);
assertNull(outputImage);
}
@Test
public void whenOriginalImageDoesNotExist_thenErrorIsThrown() throws IOException {
int targetWidth = 200;
int targetHeight = 200;
boolean errorThrown = false;
BufferedImage outputImage = null;
try {
outputImage = ThumbnailatorExample.resizeImage(null, targetWidth, targetHeight);
} catch (Exception e) {
errorThrown = true;
}
assertTrue(errorThrown);
assertNull(outputImage);
}
}