'Two different L{NamedConstant} instances do not compare equal to each
other.'

def test_nonequality(self):

    first = NamedConstant()
    first._realize(self.container, 'bar', None)
    second = NamedConstant()
    second._realize(self.container, 'bar', None)
    self.assertFalse((first == second))
    self.assertTrue((first != second))
