public void testHash()
{
var hash = new Hash(Board.Piece.X);
// First, check that all 9 indicies can be used (and also test isEmpty)
foreach (int i in Enumerable.Range(0, (int)Board.pieceCount))
{
Assert.IsTrue(hash.isEmpty(i));
}
// Test setPiece and getPiece
hash.setPiece(Board.Piece.Empty, 0);
hash.setPiece(Board.Piece.O, 1);
hash.setPiece(Board.Piece.X, 2);
Assert.AreEqual(hash.getPiece(0), Board.Piece.Empty);
Assert.AreEqual(hash.getPiece(1), Board.Piece.O);
Assert.AreEqual(hash.getPiece(2), Board.Piece.X);
// Test setPiece exception
try
{
hash.setPiece(Board.Piece.X, 0, true); // Set the 0th piece to x
hash.setPiece(Board.Piece.O, 0, false); // Then try to overwrite it, with the overwrite flag to set to false. Triggering the exception.
Assert.Fail("The exception for setPiece wasn't thrown.");
}
catch (HashException) { }
// Test the enforceIndex exception
try
{
hash.setPiece(Board.Piece.Empty, (int)Board.pieceCount);
Assert.Fail("The exception for enforceIndex wasn't thrown.");
}
catch (ArgumentOutOfRangeException) { }
// Test isMyPiece
hash.setPiece(hash.myPiece, 0, true);
Assert.IsTrue(hash.isMyPiece(0));
// Test ToString
hash.setPiece(hash.myPiece, 0, true);
hash.setPiece(Board.Piece.Empty, 1, true);
hash.setPiece(hash.otherPiece, 2, true);
Assert.AreEqual(hash.ToString(), $"{Hash.myChar}.{Hash.otherChar}......");
// Test second constructor of Hash
hash = new Hash(Board.Piece.X, "MO.OM.MOM");
var mineIndicies = new int[] { 0, 4, 6, 8 };
var otherIndicies = new int[] { 1, 3, 7 };
var emptyIndicies = new int[] { 2, 5 };
Array.ForEach(mineIndicies, i => { Assert.IsTrue(hash.isMyPiece(i)); });
Array.ForEach(otherIndicies, i => { Assert.IsTrue(!hash.isMyPiece(i)); });
Array.ForEach(emptyIndicies, i => { Assert.IsTrue(hash.isEmpty(i)); });
// Test Clone and Equals
Assert.IsTrue(hash.Clone().Equals(hash));
}
public void walkTest()
{
var m = Hash.myChar;
var o = Hash.otherChar;
var p = Board.Piece.X;
var root = Node.root;
root.children.AddRange(new Node[]
{
new Node(new Hash(p, $"{m}........"), 0),
new Node(new Hash(p, $".{o}......."), 1)
});
root.children[0].children.Add(new Node(new Hash(p, $"{m}.{o}......"), 2));
// Visualisation of what 'tree' looks like
/* /----[0]----/ "M.O......"
* /----[0]----/ "M........"
* root
* /----[1]----/ ".O......."
* */
// This action is used with Node.walk, it will keep track of the last node it visited.
Node last = null;
Action <Node> getLast = (node => last = node);
// First, seeing if it returns false on an invalid path.
// "M........" -> "MM......."
var path = new Hash[] { new Hash(p, $"{m}........"),
new Hash(p, $"{m}{m}.......") };
Assert.IsFalse(root.walk(path, getLast)); // "walk" returns false if the entire path couldn't be followed.
Assert.IsTrue(last == root.children[0]); // Confirm that the only node we walked to was "M........"
// Then see if depth works
Assert.IsTrue(root.walk(path, getLast, 1)); // It will return true now, since we walked 'depth' amount of nodes sucessfully
Assert.IsTrue(last == root.children[0]);
// Then finally see if it walks through an entire path properly
// We have to change the last hash in path first though
path[1] = new Hash(p, $"{m}.{o}......"); // "M........" -> "M.O......"
Assert.IsTrue(root.walk(path, getLast)); // If this returns true, then the entire path was walked
Assert.IsTrue(last == root.children[0].children[0]); // THen we make sure the last node walked to is correct.
}
public void hashSerialiseTest()
{
var dir = "Temp";
var file = "Serialised_Hash.bin";
var path = $"{dir}/{file}";
if (!Directory.Exists(dir))
{
Directory.CreateDirectory(dir);
}
using (var stream = File.Create(path))
{
using (var writer = new BinaryWriter(stream))
{
var hash = new Hash(Board.Piece.X, "MO.OM.MOM");
var hash2 = new Hash(Board.Piece.O, "OM.MO.OMO");
hash.serialise(writer);
hash2.serialise(writer);
}
}
using (var stream = File.OpenRead(path))
{
using (var reader = new BinaryReader(stream))
{
var hash = new Hash();
hash.deserialise(reader, GameFiles.treeFileVersion);
Assert.AreEqual("MO.OM.MOM", hash.ToString());
Assert.AreEqual(Board.Piece.X, hash.myPiece);
Assert.AreEqual(Board.Piece.O, hash.otherPiece);
hash.deserialise(reader, GameFiles.treeFileVersion);
Assert.AreEqual("OM.MO.OMO", hash.ToString());
Assert.AreEqual(Board.Piece.O, hash.myPiece);
Assert.AreEqual(Board.Piece.X, hash.otherPiece);
}
}
}
