'Instances of all record types are hashable.'

def test_hashable(self):

    for k in RECORD_TYPES:
        (k1, k2) = (k(), k())
        hk1 = hash(k1)
        hk2 = hash(k2)
        self.assertEqual(hk1, hk2, ('%s    !=    %s    (for    %s)' % (hk1, hk2, k)))
