def test_compare(self, size):
        l1 = [u''] * size
        l2 = [u''] * size
        self.failUnless(l1 == l2)
        del l2
        l2 = [u''] * (size + 1)
        self.failIf(l1 == l2)
        del l2
        l2 = [2] * size
        self.failIf(l1 == l2)