def test_free(self):
board = Board()
board.update((0, 0), circle=True)
assert board.is_free((0, 0)) == False
assert board.is_free((1, 0)) == True
def test_state(self):
board = Board()
board.update((0, 0), circle=True)
board.update((0, 1), circle=True)
board.update((0, 2), circle=True)
assert board.game_state == board.CIRCLE_WON
