new_contents: import unittest
  from unittest import mock
  from plugins import spotify
  
  class CommandMessageTest(unittest.TestCase):
  	def test_track(self):
  		track_data = {
  			'artists': [{'name': 'artist'}],
  			'name': 'track',
  			'album': {'name': 'album'},
  		}
  		spotipy = mock.MagicMock()
  		spotipy.track = mock.MagicMock(return_value=track_data)
  		sp = spotify.Spotify(spotipy)
  		ret = sp.get_info_str('track', 'asdf')
  		self.assertEqual('artist - track [album: album]', ret)
  
subject: add a simple spotify test