'Inequality between instances of a particular L{record} should be
defined as the negation of equality.'

def test_unequality(self):

    self.assertFalse((Record(1, 2) != Record(1, 2)))
    self.assertTrue((Record(1, 2) != Record(1, 3)))
    self.assertTrue((Record(1, 2) != Record(2, 2)))
    self.assertTrue((Record(1, 2) != Record(3, 4)))
