@Test(expected = IllegalArgumentException.class)
    public void testGetWinPercentageForNullHand() {
        Set<AbstractStartingHand> hands = new HashSet<AbstractStartingHand>();
        FiveCardBoard board = new FiveCardBoard();               
        hands.add(new TexasHoldemStartingHand(new Card(Suit.CLUB, Rank.ACE), new Card(Suit.SPADE, Rank.ACE)));
        hands.add(new TexasHoldemStartingHand(new Card(Suit.CLUB, Rank.DEUCE), new Card(Suit.SPADE, Rank.THREE)));    
        SimulationResult result = new SimulationResult(hands, board, 1, PokerGameType.TEXAS);   
        
        result.addResultForOneSimulation(hands);
        
        result.getWinPercentageForHand(null, 1);
    }