def test_gen_order_id_prefix(self):
order = Order()
order.id = 100
gid = order.gen_order_id()
self.assertEqual(900000100, gid)
def test_gen_order_id_prefix_repeat(self):
order = Order()
order.id = 999
gid = order.gen_order_id()
self.assertEqual(900000999, gid)
def test_get_order_id(self):
order = Order()
order.id = 100
gid = order.gen_order_id()
self.assertEqual(100, gid)
