def it_fails_on_blank_string(self): assert not is_board_string("") assert not is_board_string(" ") assert not is_board_string(" \r\n ")
def it_fails_on_illegal_characters(self): assert not is_board_string(self.input + "z")
def it_fails_on_numeric_string(self): assert not is_board_string("42")
def it_recognizes_board_string(self): assert is_board_string(self.input)