#NEWLINE# def test_can_add_to_field_and_compare( self ) : #NEWLINE# #INDENT# sut = self . system_under_test #NEWLINE# expected = Q ( field__year = ( F ( 'field__year' ) + sentinel . VALUE ) ) #NEWLINE# actual = ( sut . year == ( sut . year + sentinel . VALUE ) ) #NEWLINE# self . assertEqual ( sut , expected )