#NEWLINE# def test_tracers( self ) : #NEWLINE# #INDENT# tm = self . loader . loads ( UNNESTING ) #NEWLINE# self . assertEqual ( 4 , len ( tm . tracers ) ) #NEWLINE# self . assertIs ( tm . tracers [ 0 ] , tm . tracers [ 1 ] . parent ) #NEWLINE# self . assertIs ( tm . tracers [ 2 ] , tm . tracers [ 3 ] . parent )