#NEWLINE# def test_track_no( self ) : #NEWLINE# #INDENT# track_no = 7 #NEWLINE# track = Track ( track_no = track_no ) #NEWLINE# self . assertEqual ( self . track_no , track_no ) #NEWLINE# with self . assertRaises ( AttributeError ) : #NEWLINE# #INDENT# track . track_no = None