{
  "fixture": "BACnet Object Identifier",
  "cases": [
    {
      "case_id": "模拟输入12",
      "kind": "正例",
      "result": {
        "object_type": 0,
        "instance": 12,
        "roundtrip_hex": "0000000c"
      }
    },
    {
      "case_id": "设备4001",
      "kind": "正例",
      "result": {
        "object_type": 8,
        "instance": 4001,
        "roundtrip_hex": "02000fa1"
      }
    },
    {
      "case_id": "最大字段",
      "kind": "正例",
      "result": {
        "object_type": 1023,
        "instance": 4194303,
        "roundtrip_hex": "ffffffff"
      }
    },
    {
      "case_id": "截短",
      "kind": "显式负例",
      "rejected": "对象标识必须四字节"
    }
  ],
  "assertions_passed": 4,
  "scope": "合成输入离线演算；未接真实设备"
}