def incr_decr_get_comment(self):
uid0 = User.add("test1", "password", "*****@*****.**")
bid0 = Board.add("board1", "A")
lid0 = List.add("To Do", bid0)
card_id = Card.add("card0", lid0, uid0)
card = Card.get(card_id)
Card.incr_comment(card_id)
assert 1 == card.get_comment_count()
Card.desc_comment(card_id)
assert 0 == card.get_comment_count()
