Fixed problem with invalid castle moves

test/ParserTest.php

@@ -105,6 +105,24 @@ class ParserTest extends PHPUnit_Framework_TestCase
         $this->assertTrue($parser->isOnSameFile($this->getNumericSquare('a1'), $this->getNumericSquare('a2')));
     }
 
+    /**
+     * @test
+     */
+    public function shouldNotBeAbleToCastleInInvalidPositions(){
+        // given
+        $fen = 'rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1';
+
+        // when
+        $parser = $this->getParser($fen);
+        $legalMoves = $parser->getValidMovesAndResult("white");
+        $moves = $legalMoves['moves'];
+
+        // then
+        $this->assertEquals(array(), $moves[4]);
+
+
+    }
+
     /**
      * @test
      */