def test_count_songs_of_an_artist(self):
playlist = Playlist()
playlist.add_song(Song(artist="Someone1", title="Something1"))
playlist.add_song(Song(artist="Someone1", title="Something2"))
playlist.add_song(Song(artist="Someone1", title="Something3"))
playlist.add_song(Song(artist="Someone1", title="Something4"))
self.assertTrue(playlist.count_songs_of_an_artist("Someone1") == 4)
def main():
playlist = Playlist(repeat=True, shuffle=True)
playlist.add_song(Song(artist="Someone1", title="Something1"))
playlist.add_song(Song(artist="Someone1", title="Something2"))
code = Playlist.load('Auto-generated-playlist-#1.json')
print(code.name)
print(code.next_song())
print(code.next_song())
def test_artists(self):
playlist = Playlist()
playlist.add_song(Song(artist="Someone1", title="Something1"))
playlist.add_song(Song(artist="Someone1", title="Something2"))
playlist.add_song(Song(artist="Someone2", title="Something3"))
playlist.add_song(Song(artist="Someone3", title="Something4"))
self.assertTrue({
'Someone1': 2,
'Someone2': 1,
'Someone3': 1
} == playlist.artists())
def test_next_song_in_case_one_with_not_empty_list(self):
playlist = Playlist(repeat=True, shuffle=False)
playlist.add_song(Song(artist="Someone1", title="Something1"))
playlist.add_song(Song(artist="Someone1", title="Something2"))
# first next_song should return first song
# second next_song should return third song
# third should return first song
self.assertTrue(playlist.next_song() == Song(artist="Someone1",
title="Something1"))
self.assertTrue(playlist.next_song() == Song(artist="Someone1",
title="Something2"))
self.assertTrue(playlist.next_song() == Song(artist="Someone1",
title="Something1"))
def test_if_song_is_added(self):
playlist = Playlist()
song = Song()
playlist.add_song(song)
self.assertTrue(song in playlist.songs)
def test_initialization_without_parameters(self):
s = Song()
self.assertTrue(s.title == "No title")
self.assertTrue(s.artist == "No artist")
self.assertTrue(s.album == "No album")
self.assertTrue(s.length == "0:0:0")
def test_eq_method(self):
s1 = Song(title="Odin",
artist="Manowar",
album="The sons of Odin",
length="3:44")
s2 = Song(title="Overture to Odin",
artist="Manowar",
album="The sons of Odin",
length="3:42")
s3 = Song(title="Odin",
artist="Manowar",
album="The sons of Odin",
length="3:44")
self.assertTrue(s1 == s3)
self.assertFalse(s1 == s2)
def test_str_method(self):
s = Song(title="Odin",
artist="Manowar",
album="The sons of Odin",
length="3:44")
self.assertTrue(
str(s) == 'Manowar - Odin from The sons of Odin - 3:44')
def test_next_song_in_case_four_with_not_empty_list(self):
playlist = Playlist(repeat=True, shuffle=True)
playlist.add_song(Song(artist="Someone1", title="Something1"))
playlist.add_song(Song(artist="Someone1", title="Something2"))
# after two calls length of playlist.not_played_songs should be zero
# in the third call length of playlist.not_playes_songs should be 1
# because list is coppied and one song is played and removed from the list
playlist.next_song()
playlist.next_song()
self.assertTrue(len(playlist.not_played_songs) == 0)
playlist.next_song()
self.assertTrue(len(playlist.not_played_songs) == 1)
def test_next_song_in_case_two_with_not_empty_list(self):
playlist = Playlist(repeat=False, shuffle=False)
playlist.add_song(Song(artist="Someone1", title="Something1"))
playlist.add_song(Song(artist="Someone1", title="Something2"))
exc = None
# first next_song should return first song
# second next_song should return third song
# third should raise error
self.assertTrue(playlist.next_song() == Song(artist="Someone1",
title="Something1"))
self.assertTrue(playlist.next_song() == Song(artist="Someone1",
title="Something2"))
try:
playlist.next_song()
except Exception as err:
exc = err
self.assertIsNotNone(exc)
def test_initialization_with_parameters(self):
s = Song(title="Odin",
artist="Manowar",
album="The sons of Odin",
length="3:44")
self.assertTrue(s.title == "Odin")
self.assertTrue(s.artist == "Manowar")
self.assertTrue(s.album == "The sons of Odin")
self.assertTrue(s.length == "3:44")
def test_next_song_in_case_three_with_not_empty_list(self):
playlist = Playlist(repeat=False, shuffle=True)
playlist.add_song(Song(artist="Someone1", title="Something1"))
exc = None
self.assertTrue(isinstance(playlist.next_song(), Song))
try:
playlist.next_song()
except Exception as err:
exc = err
self.assertIsNotNone(exc)