_ _ _ _	   15 16 17 18 29 20 21  _ _ _ _
 YELLOW    _  _  _  _  _  _  _   GREEN

      14 _   _              _   _ 22
      13 B     _          _     B 23
      12 _       _      _       _ 24
      11 _         _  _         _ 25
      10 _         _  _         _ 26
      9  _       _      _       _ 27
      8  _     _          _     _ 28        
             _              _            

 _ _ _ _    _  _  _  _  _  _  _    _ _ _ _
   RED     07 06 05 04 03 02 01      BLUE


sample: board.toString()  output:
                                   

Y Y Y Y	   15 16 17 18 29 20 21  G G G G  \n
 YELLOW    _  _  _  _  _  _  _   GREEN    \n
                                          \n
      14 _   _               _   _ 22     \n
      13 _     _           _     _ 23     \n
      12 _       _       _       _ 24     \n
      11 _         _   _         _ 25     \n
      10 _         _ 6 _         _ 26     \n
      9  _       _       _       _ 27     \n
      8  _     _           _     _ 28     \n 
             _               _            \n
                                          \n
 R R R R    _  _  _  _  _  _  _    B B B B\n
  *RED     07 06 05 04 03 02 01     BLUE  \n



// initialize to initial game state, where it's R's turn to go first

TroubleGameBoard tgb = new TroubleGameBoard("R");


// initialize to initial game state, where who goes first is chosen randomly.

TroubleGameBoard tgb = new TroubleGameBoard();



tgb.nextMove(6);

// changes game state to the correct value assuming that a 4 was rolled.

assertEquals(tgb.getSpace(8).equals("R")); // this assumes that after a 6 is rolled, R frees her first piece.
assertEquals(tgb.whoseTurn().equals("Y")); // now its Yellows turn.

tgb.nextMove(3);
assertEquals(tgb.getSpace(15).equals(" ")); // yellow didn't free anything
assertEquals(tgb.whoseTurn().equals("G")); // now its Green's turn

// you can continue in this way with a whole series of game moves.... making sure that every thing you can think of 
// that could happen in a game gets tested.

tgb.nextMove(7);  // throws IllegalArgumentException .. must be between 1 and 6