TileImageEngineTest.java :  » GWT » ghetto-maps » com » moesol » gwt » maps » client » Java Open Source

package com.moesol.gwt.maps.client;

import static org.junit.Assert.assertEquals;

import org.easymock.EasyMock;
import org.junit.Before;
import org.junit.Test;

public class TileImageEngineTest {
  private TileImageEngine m_engine;
  private TileImageEngineListener m_listener = EasyMock.createMock(TileImageEngineListener.class);

  @Before
  public void setUp() throws Exception {
    m_engine = new TileImageEngine(null,m_listener);
  }
  
  @Test
  public void testTileImageEngine() {
    TileCoords[] coords = new TileCoords[] {
        new TileCoords(0, 0),
        new TileCoords(1, 1),
        new TileCoords(2, 2),
    };
    EasyMock.expect(m_listener.createImage(coords[0])).andReturn("1");
    EasyMock.expect(m_listener.createImage(coords[1])).andReturn("2");
    EasyMock.expect(m_listener.createImage(coords[2])).andReturn("3");
    EasyMock.replay(new Object[] { m_listener });
    
    String r;
    r = (String)m_engine.findOrCreateImage(coords[0]);
    assertEquals("1", r);
    r = (String)m_engine.findOrCreateImage(coords[1]);
    assertEquals("2", r);
    r = (String)m_engine.findOrCreateImage(coords[2]);
    assertEquals("3", r);
    m_engine.hideUnplacedImages();
    EasyMock.verify(new Object[] { m_listener });
    
    EasyMock.reset(new Object[] { m_listener });
    m_listener.useImage(coords[0], "1");
    m_listener.useImage(coords[1], "2");
    m_listener.useImage(coords[2], "3");
    EasyMock.replay(new Object[] { m_listener });

    r = (String)m_engine.findOrCreateImage(coords[0]);
    assertEquals("1", r);
    r = (String)m_engine.findOrCreateImage(coords[1]);
    assertEquals("2", r);
    r = (String)m_engine.findOrCreateImage(coords[2]);
    assertEquals("3", r);
    m_engine.hideUnplacedImages();
    EasyMock.verify(new Object[] { m_listener });
    
    // Scramble coords
    TileCoords tmp = coords[0];
    coords[0] = coords[1];
    coords[1] = coords[2];
    coords[2] = tmp;
    
    EasyMock.reset(new Object[] { m_listener });
    m_listener.useImage(coords[0], "2");
    m_listener.useImage(coords[1], "3");
    m_listener.useImage(coords[2], "1");
    EasyMock.replay(new Object[] { m_listener });
    
    r = (String)m_engine.findOrCreateImage(coords[0]);
    assertEquals("2", r);
    r = (String)m_engine.findOrCreateImage(coords[1]);
    assertEquals("3", r);
    r = (String)m_engine.findOrCreateImage(coords[2]);
    assertEquals("1", r);
    m_engine.hideUnplacedImages();
    EasyMock.verify(new Object[] { m_listener });
    
    // Empty coords
    coords[0] = null;
    coords[2] = null;
    
    EasyMock.reset(new Object[] { m_listener });
    m_listener.useImage(coords[1], "3");
    m_listener.hideImage("2");
    m_listener.hideImage("1");
    EasyMock.replay(new Object[] { m_listener });
    
    r = (String)m_engine.findOrCreateImage(coords[1]);
    assertEquals("3", r);
    m_engine.hideUnplacedImages();
    EasyMock.verify(new Object[] { m_listener });
  }
  
  @Test
  public void testKickOutOfCache() {
    for (int i = 0; i < TileImageEngine.MAX_CACHE_SIZE; i++) {
      TileCoords tileCoords = new TileCoords(i, 0);
      EasyMock.expect(m_listener.createImage(tileCoords)).andReturn("x=" + i);
    }
    for (int i = 1; i <= 5; i++) {
      TileCoords tileCoords = new TileCoords(0, i);
      EasyMock.expect(m_listener.createImage(tileCoords)).andReturn("y=" + i);
    }
    for (int i = 0; i < TileImageEngine.MAX_CACHE_SIZE; i++) {
      m_listener.hideImage("x=" + i);
    }
    for (int i = 0; i < 5; i++) {
      m_listener.destroyImage("x=" + i);
    }
    EasyMock.replay(new Object[] { m_listener });
    
    for (int i = 0; i < TileImageEngine.MAX_CACHE_SIZE; i++) {
      TileCoords tileCoords = new TileCoords(i, 0);
      m_engine.findOrCreateImage(tileCoords);
    }
    m_engine.hideUnplacedImages();
    for (int i = 1; i <= 5; i++) {
      TileCoords tileCoords = new TileCoords(0, i);
      m_engine.findOrCreateImage(tileCoords);
    }
    m_engine.hideUnplacedImages();
    
    EasyMock.verify(new Object[] { m_listener });
  }

}