def test_extend__external_representation(self):
a = TuplePath(("k1", ))
b = ("k2", )
a.extend(b)
self.assertEqual(a, ("k1", "k2"))
def test_extend__same_class(self):
a = TuplePath(("k1", ))
b = TuplePath(("k2", ))
a.extend(b)
self.assertEqual(a, ("k1", "k2"))