package aima.test.core.unit.environment.eightpuzzle;
import org.junit.Assert;
import org.junit.Test;
import aima.core.environment.eightpuzzle.EightPuzzleBoard;
import aima.core.environment.eightpuzzle.MisplacedTilleHeuristicFunction;
/**
* @author Ravi Mohan
*
*/
public class MisplacedTileHeuristicFunctionTest {
@Test
public void testHeuristicCalculation() {
MisplacedTilleHeuristicFunction fn = new MisplacedTilleHeuristicFunction();
EightPuzzleBoard board = new EightPuzzleBoard(new int[] { 2, 0, 5, 6,
4, 8, 3, 7, 1 });
Assert.assertEquals(7.0, fn.h(board), 0.001);
board = new EightPuzzleBoard(new int[] { 6, 2, 5, 3, 4, 8, 0, 7, 1 });
Assert.assertEquals(6.0, fn.h(board), 0.001);
board = new EightPuzzleBoard(new int[] { 6, 2, 5, 3, 4, 8, 7, 0, 1 });
Assert.assertEquals(7.0, fn.h(board), 0.001);
}
}