package com.acme;

import org.junit.Test;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;

import static org.junit.Assert.*;

public class ImageConversionTest {


    @Test
    public void convertTiffToJpeg() throws Exception {
        try (InputStream content = this.getClass().getResourceAsStream("/test.tiff")) {
            BufferedImage source = ImageIO.read(content);
            ByteArrayOutputStream out = new ByteArrayOutputStream();
            ImageIO.write(source, "jpg", out);

            byte[] bytes = out.toByteArray();
            assertTrue("no output bytes were written", bytes.length > 0);

            BufferedImage target = ImageIO.read(new ByteArrayInputStream(bytes));
            assertEquals(source.getHeight(), target.getHeight());
            assertEquals(source.getWidth(), target.getWidth());
            assertEquals(source.getColorModel().getColorSpace().getType(), target.getColorModel().getColorSpace().getType());
        }
    }


}