How to use unittest in python using this code:

from abc import ABC from datetime import datetime from datetime import time from AudioFile import AudioFile class Podcast(AudioFile, ABC): def __init__(self, title: str, artist: str, runtime: str, rating: int, series: str, season: str = None, number: int = None) -> None: super().__init__(title, artist, runtime, rating) self._series = series self._season = season self._episode_number = number self._episode_date = datetime.now() self._progress = time(0, 5, 30) Podcast._doublecheck(title, artist, runtime, rating, series, season, number, self._episode_date) @staticmethod def _doublecheck(title: str, artist: str, runtime: str, rating: int, series: str, season: str, number: int, episode_date) -> None: if not ((type(title)) or (type(artist)) or (type(runtime)) or((type(season) != str) or (type(rating) != int) and type(season) is None) ((type(number) != int) and type(number) is None)): if type(episode_date) != datetime: raise ValueError('Invalid date') else: raise ValueError('Values must be a string.') def get_desc(self) -> str: if (self._season is not None) and (self._episode_number is not None): song_desc = '{}: {}, {}, Season {} Episode {} ({})' .format(self._series, self._title, self._episode_date, self._season, self._episode_number, self._runtime) return song_desc def meta_data(self) -> dict: if (self._season is not None) and (self._episode_number is not None): song_dict = {'title': self._title, 'artist': self._artist, 'date_added': self._usage.date_added, 'runtime': self._runtime, 'pathname': self._filepath, 'filename': self._filename, 'play_count': self._usage.play_count, 'last_played': self._usage.last_played, 'rating': self._human_rating, 'series': self._series, 'season': self._season, 'episode_number': self._episode_number} return song_dict @property def progress_area(self) -> time: return self._progress @progress_area.setter def progress_area(self, progress_area: str) -> None: try: progress_area = datetime.strptime(progress_area, '%H:%M:%S') self._progress = '%0.2d:%0.2d:%0.2d' % (progress_area.hour, progress_area.minute, progress_area.second) except: raise ValueError