public void testGenerateSuccessors() {
TicTacToe t3 = new TicTacToe();
ArrayList successors = t3.getSuccessorStates(t3.getState());
Assert.assertEquals(9, successors.size());
checkSuccessorList(successors, "O", 8);
ArrayList successors2 = t3.getSuccessorStates((GameState) successors
.get(0));
checkSuccessorList(successors2, "X", 7);
ArrayList successors3 = t3.getSuccessorStates((GameState) successors2
.get(0));
checkSuccessorList(successors3, "O", 6);
}