added piece creation

server/models/king.js

@@ -0,0 +1,26 @@
+/**
+ * Created by JetBrains WebStorm.
+ * User: craigbrookes
+ * Date: 18/03/2012
+ * Time: 11:33
+ * To change this template use File | Settings | File Templates.
+ */
+var piece = require('./piece');
+var util = require('util');
+
+function King (opts) {
+   piece.Piece.apply(this,[opts]); //equiv of calling super(opts)
+};
+
+util.inherits(King,piece.Piece); //extend inherit from piece
+
+
+//override of take method
+
+King.prototype.take = function (){
+    console.log("king taking");
+}
+
+//add king only methods    
+
+exports.King = King;

test/test_piece_createion.js

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+/**
+ * Created by JetBrains WebStorm.
+ * User: craigbrookes
+ * Date: 18/03/2012
+ * Time: 11:41
+ * To change this template use File | Settings | File Templates.
+ */
+var assert = require('assert');
+var piece = require('../server/models/piece.js');
+var king = require('../server/models/king.js');
+
+describe("normal piece creation", function () {
+   it("should create a normal piece with type man", function () {
+     var redpiece = new piece.Piece({side:'red'});
+       console.log(redpiece.toString());
+       assert.equal("red",redpiece.side);
+       assert.equal('man', redpiece.type);
+   });
+});
+
+describe("king peice creation inherits piece", function () {
+   it("should create a king that inherits methods from piece", function () {
+      var aking = new king.King({side:'red'});
+      assert.equal("red",aking.side); //test inherited property 
+      assert(true,aking.hasOwnProperty('take')); 
+   }); 
+});