def METHOD_NAME(self):
    key = self.underlying.get("file_1.mp3").album_key
    self.failUnlessEqual(self.library.get(key).title, "Album 1")
    album = self.library.get(key)
    self.failUnlessEqual(album.key, key)
    self.failUnlessEqual(len(album.songs), 4)
    key = self.underlying.get("file_2.mp3").album_key
    self.failUnlessEqual(self.library.get(key).title, "Album 2")