#NEWLINE# def test_not_set_on_upate( self ) : #NEWLINE# #INDENT# C = self . classes . C #NEWLINE# sess = Session ( ) #NEWLINE# c1 = C ( ) #NEWLINE# sess . add ( c1 ) #NEWLINE# sess . commit ( ) #NEWLINE# sess . expire ( c1 ) #NEWLINE# c1 . data = 'foo' #NEWLINE# sess . flush ( )