Assert JSON response of JMETER - json

Question

I get below JSON as API response. I want to assert if these 5 key values are present
"
"DayClosingDate": "/Date(-62135596800000)/",
"StartTime": "/Date(-62135596800000)/",
"EndTime": "/Date(-62135596800000)/",
"OpeningBalance": 0,
"CashAmount": 0,
"CreditCardAmount": 0,
"
What should be the best assertion?
{
"d": {
"__type": "WSOffline.Response",
"Status": "0",
"Message": "Success",
"Data": [
{
"DayClosingID": 26030,
"UID": 0,
"StoreID": 0,
"CashRegisterID": 0,
"DayClosingDate": "/Date(-62135596800000)/",
"StartTime": "/Date(-62135596800000)/",
"EndTime": "/Date(-62135596800000)/",
"OpeningBalance": 0,
"CashAmount": 0,
"CreditCardAmount": 0,
"OtherAmount": 0,
"BalanceAmount": 0,
"Remarks": null,
"CreatedByEmployeeID": 0,
"CreatedDatetime": "/Date(-62135596800000)/",
"ClosingDoneByEmployeeID": 0,
"ClosingDoneDateTime": "/Date(-62135596800000)/",
"PaymentDetails": [],
"StartTimeText": null,
"EndTimeText": null,
"CashRegisterName": null,
"DayClosingDateText": null,
"InvoiceName": null,
"InvoiceDate": null,
"StoreName": null,
"CreatedByEmployee": null,
"ClosingDoneByEmployee": null,
"DayClosingDone": null
}
]
}
}

Answer 1

Depends on if the values are dynamic. Are they?
If not, you can easily put the following line in a Response Assertion, with matching rule as 'contains'.
"DayClosingDate": "/Date(-62135596800000)/"
You can do this separately for each assertion you need. You can also opt for the jp#gc - JSON Path Assertion plugin depending on your needs.

Answer 2

If you just want to verify param name, then
Assertion: JSONpath Existence Match
This will be your jsonpath expression:
$..DayClosingDate
Result: will be true if it is present.
Or if you want to verify param value, then
Assertion: JSONpath Match
This will be your jsonpath expression:
$..DayClosingDate
Result: /Date(-62135596800000)/