- Implemented saving and loading of a player model. High scores are now persistent, though only for one user.

- Created a JUnit test class to test the serialization. Should be useful for later tests.

src/model/Referee.java

@@ -28,14 +28,14 @@ public class Referee implements Runnable {
 
 	private final HumanPlayer humanPlayer = new HumanPlayer();
 	private final MainFrame mf;
-	private final PlayerModel playerModel;
+	private PlayerModel playerModel = null;
 
 	public Referee(MainFrame mnFrm) {
 		if (PlayerModel.TRY_LOAD && PlayerModel.exists()) {
 			playerModel = PlayerModel.load();
 		}
 
-		else {
+		if (playerModel == null) {
 			playerModel = new PlayerModel();
 		}
 
@@ -84,6 +84,11 @@ public class Referee implements Runnable {
 			mf.updateBoard();
 			play();
 			playerModel.logGame(getPlayerScore());
+
+			if (!playerModel.save()) {
+				System.err.println("Saving PlayerModel failed.");
+			}
+
 			new HighScoreDialog(mf, playerModel);
 		}
 	}

src/model/playerModel/GameLog.java

@@ -1,7 +1,10 @@
 package model.playerModel;
 
-public class GameLog implements Comparable<GameLog> {
+import java.io.Serializable;
+
+public class GameLog implements Comparable<GameLog>, Serializable {
 	public static boolean SORT_BY_SCORE = true;
+	private static final long serialVersionUID = 1L;
 	private final int gameNum;
 
 	private final int score;

src/model/playerModel/Node.java

@@ -1,6 +1,8 @@
 package model.playerModel;
 
-public interface Node {
+import java.io.Serializable;
+
+public interface Node extends Serializable {
 
 	boolean axon();
 

src/model/playerModel/PlayerModel.java

@@ -1,6 +1,11 @@
 package model.playerModel;
 
 import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
 import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.Collections;
@@ -31,8 +36,18 @@ public class PlayerModel implements Serializable {
 	}
 
 	public static PlayerModel load() {
-		// TODO Import the PlayerModel from a file.
+		FileInputStream fin = null;
-		return new PlayerModel();
+		ObjectInputStream oin = null;
+
+		try {
+			fin = new FileInputStream(PLAYER_MODEL_PATH);
+			oin = new ObjectInputStream(fin);
+			PlayerModel pm = (PlayerModel) oin.readObject();
+			oin.close();
+			return pm;
+		} catch (Exception e) {
+			return null;
+		}
 	}
 
 	private int GAME_COUNTER = 0;
@@ -170,8 +185,17 @@ public class PlayerModel implements Serializable {
 	}
 
 	public boolean save() {
-		// TODO Implement saving.
+		FileOutputStream fout = null;
-		return false;
+		ObjectOutputStream oout = null;
+		try {
+			fout = new FileOutputStream(PLAYER_MODEL_PATH);
+			oout = new ObjectOutputStream(fout);
+			oout.writeObject(this);
+			oout.close();
+			return true;
+		} catch (IOException ex) {
+			return false;
+		}
 	}
 
 	public void train(boolean[] example) {

src/model/playerModel/node/InputNode.java

@@ -4,6 +4,7 @@ import model.playerModel.Node;
 
 public class InputNode implements Node {
 
+	private static final long serialVersionUID = 1L;
 	private boolean dendrite = false;
 
 	@Override

src/model/playerModel/node/SigmoidNode.java

@@ -6,6 +6,8 @@ import model.playerModel.Node;
 
 public class SigmoidNode implements Node {
 
+	private static final long serialVersionUID = 1L;
+
 	// Training rate.
 	private final double A = .15;
 

test/puzzleTests/AllTests.java

@@ -0,0 +1,17 @@
+package puzzleTests;
+
+import junit.framework.Test;
+import junit.framework.TestSuite;
+
+public class AllTests {
+
+	public static Test suite() {
+		TestSuite suite = new TestSuite(
+				"Tests for edu.gatech.cc.arktos.testcases");
+		// $JUnit-BEGIN$
+		suite.addTestSuite(Tests.class);
+		// $JUnit-END$
+		return suite;
+	}
+
+}

test/puzzleTests/Tests.java

@@ -0,0 +1,118 @@
+package puzzleTests;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+
+import junit.framework.TestCase;
+import model.playerModel.PlayerModel;
+
+public class Tests extends TestCase {
+
+	public static PlayerModel getFakePlayerModel() {
+		PlayerModel pm = new PlayerModel();
+
+		pm.logGame(25);
+		pm.logGame(30);
+		pm.logGame(26);
+		pm.logGame(34);
+		pm.logGame(22);
+		pm.logGame(30);
+		pm.logGame(60);
+
+		return pm;
+	}
+
+	public void testHighScores() {
+		PlayerModel pm = getFakePlayerModel();
+		int[] highScores = pm.getHighScores();
+
+		assertEquals(highScores.length, 10);
+		assertEquals(highScores[0], 60);
+		assertEquals(highScores[1], 34);
+		assertEquals(highScores[2], 30);
+		assertEquals(highScores[3], 30);
+		assertEquals(highScores[4], 26);
+		assertEquals(highScores[5], 25);
+		assertEquals(highScores[6], 22);
+		assertEquals(highScores[7], -1);
+		assertEquals(highScores[8], -1);
+		assertEquals(highScores[9], -1);
+	}
+
+	public void testSerializationInput() {
+		PlayerModel pm = getFakePlayerModel();
+
+		FileOutputStream fout = null;
+		ObjectOutputStream oout = null;
+
+		FileInputStream fin = null;
+		ObjectInputStream oin = null;
+		try {
+			fout = new FileOutputStream("test/PlayerModel.dat");
+			oout = new ObjectOutputStream(fout);
+			oout.writeObject(pm);
+			oout.close();
+		} catch (IOException ex) {
+			ex.printStackTrace();
+			fail("Exception");
+		}
+
+		pm = null;
+
+		try {
+			fin = new FileInputStream("test/PlayerModel.dat");
+
+			oin = new ObjectInputStream(fin);
+			pm = (PlayerModel) oin.readObject();
+
+			oin.close();
+
+			int[] highScores = pm.getHighScores();
+
+			assertEquals(highScores.length, 10);
+			assertEquals(highScores[0], 60);
+			assertEquals(highScores[1], 34);
+			assertEquals(highScores[2], 30);
+			assertEquals(highScores[3], 30);
+			assertEquals(highScores[4], 26);
+			assertEquals(highScores[5], 25);
+			assertEquals(highScores[6], 22);
+			assertEquals(highScores[7], -1);
+			assertEquals(highScores[8], -1);
+			assertEquals(highScores[9], -1);
+
+		} catch (FileNotFoundException e) {
+			e.printStackTrace();
+			fail("Exception");
+		} catch (IOException e) {
+			e.printStackTrace();
+			fail("Exception");
+		} catch (ClassNotFoundException e) {
+			e.printStackTrace();
+			fail("Exception");
+		}
+	}
+
+	public void testSerializationOutput() {
+		PlayerModel pm = getFakePlayerModel();
+
+		FileOutputStream fout = null;
+		ObjectOutputStream oout = null;
+		try {
+			fout = new FileOutputStream("test/PlayerModel.dat");
+			oout = new ObjectOutputStream(fout);
+			oout.writeObject(pm);
+			oout.close();
+
+			assertTrue((new File("test/playerModel.dat")).exists());
+		} catch (IOException ex) {
+			ex.printStackTrace();
+			fail("Exception");
+		}
+	}
+}