MoveSorterTest.java

/*
 $Id$

 Copyright (C) 2006-2007 by David Cotton

 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
 Foundation; either version 2 of the License, or (at your option) any later
 version.

 This program 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 General Public License for more details.

 You should have received a copy of the GNU General Public License along with
 this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
 Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
package fr.free.jchecs.ai;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

import static fr.free.jchecs.core.Piece.BLACK_PAWN;
import static fr.free.jchecs.core.Piece.BLACK_ROOK;
import static fr.free.jchecs.core.Piece.WHITE_PAWN;

import java.util.Arrays;
import java.util.Comparator;

import org.junit.Test;

import fr.free.jchecs.core.Move;
import fr.free.jchecs.core.Square;

/**
 * Tests unitaires des classes d'ordenancement des mouvements.
 * 
 * @author David Cotton
 */
public final class MoveSorterTest
{
  /**
   * Pour que JUnit puisse instancier les tests.
   */
  public MoveSorterTest()
  {
    // Rien de spécifique...
  }

  /**
   * Valide la méthode de comparaison du tri static.
   */
  @Test
  public void valideStaticCompareTo()
  {
    final Comparator<Move> comp = new StaticMoveSorter();
    final Move mvt1 = new Move(BLACK_PAWN, Square.valueOf("a2"), Square.valueOf("a4"));
    final Move mvt2 = new Move(BLACK_PAWN, Square.valueOf(8), Square.valueOf(17), WHITE_PAWN);
    final Move mvt3 = new Move(BLACK_ROOK, Square.valueOf(16), Square.valueOf(24));
    final Move mvt4 = new Move(BLACK_PAWN, Square.valueOf(16), Square.valueOf(24));

    assertTrue(comp.compare(mvt1, mvt1) == 0);

    assertTrue(comp.compare(mvt1, mvt2) == 1);
    assertTrue(comp.compare(mvt2, mvt1) == -1);

    assertTrue(comp.compare(mvt1, mvt3) == 1);
    assertTrue(comp.compare(mvt3, mvt1) == -1);

    assertTrue(comp.compare(mvt2, mvt3) == -1);
    assertTrue(comp.compare(mvt3, mvt2) == 1);

    assertTrue(comp.compare(mvt1, mvt4) == 0);
    assertTrue(comp.compare(mvt4, mvt1) == 0);

    final Move [] mvts = { mvt1, mvt2, mvt3, mvt4, };
    Arrays.sort(mvts, comp);
    assertEquals(mvts[0], mvt2);
    assertEquals(mvts[1], mvt3);
    assertEquals(mvts[2], mvt1);
    assertEquals(mvts[3], mvt4);
  }
}