@Test(expected = NotEnoughChipsException.class)
 public void
     if_a_player_attempts_to_place_more_chips_on_the_table_than_available_the_system_refuses_the_bet()
         throws Exception {
   when(walletService.isAvailable(p, 10)).thenReturn(false);
   rt.placeBet(p, Field.forNumber(10), 10);
 }
 @Before
 public void setUp() {
   p = new Player();
   rng = mock(RandomNumberGenerator.class);
   walletService = mock(WalletService.class);
   timer = new TestTimer();
   rt = new RouletteTable(10000, rng, timer, walletService);
   when(walletService.isAvailable((Player) anyObject(), anyInt())).thenReturn(true);
 }