DtedVrtTest.java

/*
 *    ImageI/O-Ext - OpenSource Java Image translation Library
 *    http://www.geo-solutions.it/
 *    http://java.net/projects/imageio-ext/
 *    (C) 2007 - 2009, GeoSolutions
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License as published by the Free Software Foundation;
 *    either version 3 of the License, or (at your option) any later version.
 *
 *    This library 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
 *    Lesser General Public License for more details.
 */
package it.geosolutions.imageio.plugins.vrt;

import it.geosolutions.imageio.gdalframework.AbstractGDALTest;
import it.geosolutions.imageio.utilities.ImageIOUtilities;
import it.geosolutions.resources.TestData;
import org.junit.Assert;
import org.junit.Before;

import javax.imageio.ImageReader;
import javax.media.jai.ImageLayout;
import java.awt.image.RenderedImage;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;

/**
 * Testing reading capabilities for DTED with {@link VRTImageReader}.
 * 
 * @author Daniele Romagnoli, GeoSolutions.
 * @author Simone Giannecchini, GeoSolutions.
 */
public class DtedVrtTest extends AbstractGDALTest {
    public final static String fileName = "n43.dt0.vrt";


    @Before
    public void setUp() throws Exception {
        super.setUp();
    }

    /**
     * Test read exploiting common JAI operations (Crop-Translate-Rotate)
     * 
     * @throws FileNotFoundException
     * @throws IOException
     */
    @org.junit.Test
    public void imageRead() throws FileNotFoundException, IOException {
        if (!isGDALAvailable) {
            return;
        }
        File file = TestData.file(this, fileName);

        // ////////////////////////////////////////////////////////////////
        // preparing to read
        // ////////////////////////////////////////////////////////////////
        final ImageLayout l = new ImageLayout();
        l.setTileGridXOffset(0).setTileGridYOffset(0).setTileHeight(32).setTileWidth(32);

        // get a RenderedImage
        ImageReader reader= new VRTImageReaderSpi().createReaderInstance();
        reader.setInput(file);
        RenderedImage image = reader.read(0);
        if (TestData.isInteractiveTest()) {
            ImageIOUtilities.visualize(image, "test", true);
        } else {
            Assert.assertNotNull(image.getData());
        }
        Assert.assertEquals(121, image.getWidth());
        Assert.assertEquals(121, image.getHeight());
        reader.dispose();
    }
}