{
  "id": "gift-refund-allocation-acceptance",
  "synthetic": true,
  "function": "sum",
  "scope": [
    "No expiry-law advice, live payment, gift-card balance mutation or guarantee of gateway reload support. Confirm the actual gateway and refund limits before implementation.",
    "不提供到期法律判断，不执行付款或改余额，不保证任意网关支持充值退款。实施前核对实际网关及可退限制。"
  ],
  "cases": [
    {
      "args": [
        80,
        30
      ],
      "expected": 110
    },
    {
      "args": [
        30,
        0
      ],
      "expected": 30
    },
    {
      "args": [
        0,
        110
      ],
      "expected": 110
    }
  ]
}