filesystempagestoretest.java

shape file read and write

/*
 *    GeoTools - OpenSource mapping toolkit
 *    http://geotools.org
 *    (C) 2002-2006, GeoTools Project Managment Committee (PMC)
 *
 *    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.index.rtree.cachefs;

import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.security.SecureRandom;

import junit.framework.TestCase;

import org.geotools.index.DataDefinition;
import org.geotools.index.TreeException;

/**
 * DOCUMENT ME!
 * 
 * @author Tommaso Nolli
 * @source $URL:
 *         http://svn.geotools.org/geotools/trunk/gt/modules/plugin/shapefile/src/test/java/org/geotools/index/rtree/cachefs/FileSystemPageStoreTest.java $
 */
public class FileSystemPageStoreTest extends TestCase {
    /**
     * Constructor for FileSystemPageStoreTest.
     * 
     * @param arg0
     */
    public FileSystemPageStoreTest(String arg0) {
        super(arg0);
    }

    /*
     * Test for void FileSystemPageStore(File)
     */
    public void testFileSystemPageStoreFile() throws Exception {
        File file = File.createTempFile("geotools2a", ".grx");
        file.deleteOnExit();

        try {
             new FileSystemPageStore(file);
            fail("Cannot create a FileSystemPageStore without a "
                    + "DataDefinition");
        } catch (TreeException e) {
            file.delete();
            // Ok, the file must exist
        }
    }

    /*
     * Test for void FileSystemPageStore(File, DataDefinition)
     */
    public void testFileSystemPageStoreFileDataDefinition() throws Exception {
        File file = File.createTempFile("geotools2b", ".grx");
        file.deleteOnExit();
        DataDefinition dd = new DataDefinition("US-ASCII");

        try {
            new FileSystemPageStore(file, dd);
            fail("Cannot use an empty DataDefinition");
        } catch (TreeException e) {
            // OK
        }

        dd.addField(Integer.class);

        FileSystemPageStore fps = new FileSystemPageStore(file, dd);
        fps.close();
    }

    /*
     * Test for void FileSystemPageStore(File, DataDefinition, int, int, short)
     */
    public void testFileSystemPageStoreFileDataDefinitionintintshort()
            throws Exception {
        File file = File.createTempFile("geotools2c", ".grx");
        file.deleteOnExit();
        DataDefinition dd = new DataDefinition("US-ASCII");
        dd.addField(Integer.class);

        FileSystemPageStore fps = null;

        try {
            fps = new FileSystemPageStore(file, dd, 10, 10,
                    FileSystemPageStore.SPLIT_LINEAR);
            fail("MinNodeEntries must be <= MaxNodeEntries / 2");
        } catch (TreeException e) {
            // OK
        }

        try {
            fps = new FileSystemPageStore(file, dd, 10, 5, (short) 1000);
            fail("SplitAlgorithm not supported");
        } catch (TreeException e) {
            // OK
        }

        fps = new FileSystemPageStore(file, dd, 50, 25,
                FileSystemPageStore.SPLIT_QUADRATIC);
        fps.close();

        OutputStream out = new FileOutputStream(file);
        out.write(SecureRandom.getSeed(50));
        out.close();

        try {
            fps = new FileSystemPageStore(file, dd, 10, 5,
                    FileSystemPageStore.SPLIT_QUADRATIC);
            fail("File must not exist");
        } catch (TreeException e) {
            // OK
        }
    }
}