/*
 *    GeoTools - The Open Source Java GIS Toolkit
 *    http://geotools.org
 *
 *    (C) 2006-2008, Open Source Geospatial Foundation (OSGeo)
 *
 *    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;
 *    version 2.1 of the License.
 *
 *    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 org.geotools.gce.gtopo30;

import java.io.File;
import java.util.logging.Logger;

import junit.framework.TestCase;

import org.geotools.coverage.grid.GridCoverage2D;
import org.geotools.test.TestData;

/**
 * @author Simone Giannecchini
 * 
 *
 * @source $URL$
 */
public abstract class GT30TestBase extends TestCase {

	protected GridCoverage2D gc;

	protected Logger logger = org.geotools.util.logging.Logging.getLogger(GT30ReaderWriterTest.class
			.toString());

	protected File newDir;

	protected String fileName = "W002N52";

	/**
	 * 
	 */
	public GT30TestBase() {
		super();
	}

	/**
	 * @param arg0
	 */
	public GT30TestBase(String arg0) {
		super(arg0);
		
	}

	public abstract void test() throws Exception;

	/**
	 * Unpack the gtopo files from the supplied zip file.
	 * 
	 * @throws Exception
	 */
	protected void unpackGTOPO() throws Exception {
		// check that it exisits
		File file = TestData.file(this, fileName + ".zip");
		assertTrue(file.exists());

		// unzip it
		TestData.unzipFile(this, fileName + ".zip");
	}

	/**
	 * Deleting all the file we created during tests. Since gtopo files are big
	 * we try to save space on the disk!!!
	 * 
	 * @param file
	 */
	protected void deleteAll(File file) {
		final File[] fileList = file.listFiles();
		final int length = fileList.length;
		for (int i = 0; i < length; i++) {
			if (fileList[i].isDirectory()) {
				deleteAll(fileList[i]);
				fileList[i].delete();

				continue;
			}

			if (!fileList[i].getName().endsWith("zip")
					&& !fileList[i].getName().startsWith("W002N52")) {
				fileList[i].delete();
			}
		}
	}

	protected void setUp() throws Exception {
		super.setUp();
		this.unpackGTOPO();
	}

	/*
	 * @see TestCase#tearDown()
	 */
	protected void tearDown() throws Exception {
		deleteAll(TestData.file(this, ""));
		super.tearDown();
	}
}