from unittest import TestCase , main
from sys import getrefcount
    
def f () :
    try : raise ValueError
    except ValueError : raise ValueError

class Test_assertRaises ( TestCase ) :
    def test_with ( self ) :
        refcount = getrefcount ( f )
        self.assertRaises ( ValueError , f )
        self.assertEqual ( refcount , getrefcount(f) )
    def test_without ( self ) :
        refcount = getrefcount ( f )
        try : f()
        except ValueError : pass
        self.assertEqual ( refcount , getrefcount(f) )


if __name__ == '__main__' : main()