validation json body response

Gatling (Open-Source)
1

.check(jsonPath("$.id").notNull)

I need use assertion like where actual result and expected result should compare
verify the id value into the
.check(jsonPath("$.id").toString.equalsIgnoreCase(“test”)

but this is not working .
could you please tell me that is there any assertion method for this

2

This code is wrong: you’re transforming to lower case the String representation of the jsonPath check definition, not the result of the check.
You have to use transform.

3

Thanks for response

For my requirement is as below

I have one json where I passed the value from the csvfeeder

{
  "id": "1",
  "category": {
    "id": "${id}",
    "name": "${Catagory_Name}"
  },
  "name": "${Tag_Name}",
  "photoUrls": [
    "${Photo_URL}",
    "${Photo_URL1}"
  ],
  "tags": [
    {
      "id": "${id}",
      "name": "${Pet_Name}"
    }
  ],
  "status": "${Status}"
}

Now I want to do assertion with Id in response

For example if passed “test1” as id into the request then I want to assert that into response valje is coming or not.
I used the below code but it seems not working.
Kindly suggest me which code I should useAs of now I am using below code

val addNewPet = scenario("Add a new pet to the store")
  .feed(Ids)
  .feed(csvFeeder)
  .exec(
    actionBuilder = http("Add a new pet to the store" + baseUrl)
      .post(baseUrl + "/v2/pet")
      .headers(header1)
      .header("test","test")
      .body(ElFileBody("jsonfile/AddPet.json"))
      .check(status.is(200))
      .check(responseTimeInMillis.lte(5000))
      .check(jsonPath("$.tags[0].name").find.saveAs("test"))
      .check(jsonPath("$.photoUrls[0]").find.saveAs("test1"))
      .check(jsonPath("$.photoUrls[1]").find.saveAs("test2"))
     .check(checkIf((response: Response, session: Session) => session("test").as[String].transform("${id}"))(substring("${id}")))
  )
4 
val addNewPet = scenario("Add a new pet to the store")
  .feed(Ids)
  .feed(csvFeeder)
  .exec(
    actionBuilder = http("Add a new pet to the store" + baseUrl)
      .post(baseUrl + "/v2/pet")
      .headers(header1)
      .header("test","test")
      .body(ElFileBody("jsonfile/AddPet.json"))
      .check(status.is(200))
      .check(responseTimeInMillis.lte(5000))
      .check(jsonPath("$.tags[0].name").find.saveAs("test"))
      .check(jsonPath("$.photoUrls[0]").find.saveAs("test1"))
      .check(jsonPath("$.photoUrls[1]").find.saveAs("test2"))
     .check(checkIf((response: Response, session: Session) => session("test").as[String].matches("${id}"))(substring("${id}")))
  )

I tried above code also
I need to put assertion only where I can verify that whatever value send into the request should be occurred same into the response