QuickTileCacheTest.java

/* Copyright (c) 2001 - 2007 TOPP - www.openplans.org. All rights reserved.
 * This code is licensed under the GPL 2.0 license, availible at the root
 * application directory.
 */
package org.geoserver.wms.map;

import java.awt.Point;
import java.awt.geom.Point2D;

import junit.framework.TestCase;

import com.vividsolutions.jts.geom.Envelope;

public class QuickTileCacheTest extends TestCase {
    QuickTileCache cache = new QuickTileCache();

    public void testMetaCoordinates() {
        Point orig = new Point(0, 0);
        assertEquals(orig, cache.getMetaTileCoordinates(orig));

        Point t10 = new Point(1, 0);
        assertEquals(orig, cache.getMetaTileCoordinates(t10));

        Point t01 = new Point(1, 0);
        assertEquals(orig, cache.getMetaTileCoordinates(t01));

        Point t33 = new Point(3, 3);
        assertEquals(new Point(3, 3), cache.getMetaTileCoordinates(t33));

        Point tm1m1 = new Point(-1, -1);
        assertEquals(new Point(-3, -3), cache.getMetaTileCoordinates(tm1m1));

        Point tm3m3 = new Point(-3, -3);
        assertEquals(new Point(-3, -3), cache.getMetaTileCoordinates(tm3m3));

        Point tm4m4 = new Point(-4, -4);
        assertEquals(new Point(-6, -6), cache.getMetaTileCoordinates(tm4m4));

        Point t4m4 = new Point(4, -4);
        assertEquals(new Point(3, -6), cache.getMetaTileCoordinates(t4m4));

        Point tm44 = new Point(-4, 4);
        assertEquals(new Point(-6, 3), cache.getMetaTileCoordinates(tm44));
    }

    public void testTileCoordinatesNaturalOrigin() {
        Point2D origin = new Point2D.Double(0, 0);
        Envelope env = new Envelope(30, 60, 30, 60);
        Point tc = cache.getTileCoordinates(env, origin);
        assertEquals(new Point(1, 1), tc);

        env = new Envelope(-30, 0, -30, 0);
        tc = cache.getTileCoordinates(env, origin);
        assertEquals(new Point(-1, -1), tc);
    }
}