Increase coverage (#218)

* Monkeypatch fetch user and use pytest.tempdir

* Cover spotify_tools.grab_album()

* Cover avconv conversion

* Cover grab_single()

* Reduce code repetition

* Move grab_playlist() to spotify_tools.py

* Move Spotify specific functions to spotify_tools.py

* Refactoring

* Return track list from write_tracks()

* Fix tests

* Cover more cases in generate_youtube_url()

* Test for unavailable audio streams

* Test for filename without spaces

* handle.py 100% coverage

* Improve config tests

* Speed up tests

* Install avconv and libfdk-aac

* Some cleaning

* FFmpeg with libfdk-aac, libopus

* Some refactoring

* Convert tmpdir to string

* Cover YouTube title when downloading from list

* Explicitly cover some internals.py functions

core/metadata.py

@@ -8,6 +8,7 @@ import urllib.request
 
 def compare(music_file, metadata):
     """Check if the input music file title matches the expected title."""
+    already_tagged = False
     try:
         if music_file.endswith('.mp3'):
             audiofile = EasyID3(music_file)
@@ -16,7 +17,7 @@ def compare(music_file, metadata):
             audiofile = MP4(music_file)
             already_tagged = audiofile['\xa9nam'][0] == metadata['name']
     except (KeyError, TypeError):
-        already_tagged = False
+        pass
 
     return already_tagged