Unit tests!

[FUMR-bot]

• [ ] login process (not sure how to do this - it's interactive oauth2)
• [x] session refreshing
• [ ] Track
  • [x] loading track info
  • [x] downloading tracks
  • [x] track lyrics
  • [ ] track metadata generation
• [x] loading album info
  • [x] listing tracks from albums
• [x] loading playlist info
  • [x] listing tracks from playlists
• [x] loading artists
  • [x] listing albums from artists
• [x] loading cover arts
• [x] parsing URLs
• [x] searching
• [x] extracting client_id from Tidal Android .apk
• [ ] TidalMultiSession tests (what kind of?)
• [x] caching TidalObject creation
  • [x] caching of tracks
  • [x] caching of albums
  • [x] caching of playlists
  • [x] caching of artists

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This issue has been automatically created by todo-actions based on a TODO comment found in tests/test_tidal_async.py:9. It will automatically be closed when the TODO comment is removed from master.