#NEWLINE# def test_filter_for_ISNULL_lookup( self ) : #NEWLINE# #INDENT# f = Article . _meta . get_field ( 'author' ) #NEWLINE# ( result , params ) = FilterSet . filter_for_lookup ( params , 'isnull' ) #NEWLINE# self . assertEqual ( result , BooleanFilter ) #NEWLINE# self . assertDictEqual ( params , { #NEWLINE# #INDENT# #NEWLINE# #UNINDENT# } )