PATH is not resolving correctly

提供されたルールと payloads を使用して issue #285 を再現し、その後、JSON-PATH の動作に関する背景を確認するため、リンクされている Mojaloop のディスカッションを確認してください。文字列の body が $.amount 条件を満たさず、amount: '123' を含むオブジェクトの body が満たし、適切なプロジェクトテストに回帰テストのカバレッジが追加されれば、修正は完了です。

I have seen some strange happenings with regard to how the JSON-PATH is resolving in the rules with "json-rules-engine": "6.1.2".

If you consider the following rule:

{
    "ruleId": 1,
    "description": "Returns an NDC exceeded error response (ML error 4001) from the simulator when transfer value is 123 in any currency",
    "conditions": {
        "all": [
            {
                "fact": "path",
                "operator": "equal",
                "value": "/transfers"
            },
            {
                "fact": "method",
                "operator": "equal",
                "value": "POST"
            },
            {
                "fact": "body",
                "operator": "equal",
                "value": "123",
                "path": "$.amount"
            }
        ]
    },
    "event": {
        "type": "simulateError",
        "params": {
            "statusCode": 500,
            "body": {
                "statusCode": "4001",
                "message": "Payer FSP insufficient liquidity"
            }
        }
    }
}

With the following payload:

{
  path: '/transfers',
  body: '123', // <-- Non-matching PATH
  method: 'POST',
}

The rule will still resolve and fire off the event which I believe is incorrect.

My expectation is that it should only resolve when the payload is as follows:

{
  path: '/transfers',
  body: {      // <-- correct body 
      amount: '123',  // <-- Matching PATH
  },
  method: 'POST',
}

Link for reference: https://github.com/mojaloop/mojaloop-simulator/pull/120/files#r747311386