public void TestGetValidCommands()
        {
            ChessboardManager chessboardManager = new ChessboardManager();

            string validCommands = chessboardManager.GetValidCommands();

            string expectedCommands =
                "King: KUL, KUR, KDL, KDR\r\n" +
                "Pawns: ADL, ADR, BDL, BDR, CDL, CDR, DDL, DDR\r\n";

            Assert.AreEqual(expectedCommands, validCommands, "The valids commands are not those expected.");
        }