#NEWLINE# def test_list_sort( self ) : #NEWLINE# #INDENT# obj = HasListProp ( foo = [ 'b' , 'a' ] ) #NEWLINE# self . assertTrue ( isinstance ( obj . foo , PropertyValueList ) ) #NEWLINE# self . _check_mutation ( obj , 'foo' , ( lambda x : x . sort ( ) ) , [ 'b' , 'a' ] , [ 'a' , 'b' ] )