How to check that list of values contains value from previous request?

Gatling (Open-Source)
1

Hiya,

I’m using gatling to load test a service I written which exposes JSON. The first request returns an object something like:

{
“id” 4"
}

The second request returns a list of elements, something like:

[
{
“type”:“NEW”,
“id”:1,
…
},
{
“type”:“NEW”,
“id”:4,
…
},
{
“type”:“DELETED”,
“id”:2,
…
},
{
“type”:“FINISHED”,
“id”:3,
…
}
]

I want to check that in the second request there’s an id with type “NEW” that matches the id returned by the first request. I don’t think any of the current checks documented in the verify section of the wiki can do this. How would you usually check this kind of functionality?

Thanks, Helen

2

Hi,

I’ve just backported Gatling 2 JsonPath engine so that one can target the root array. I hope to release 1.4.6 tomorrow, so stay tuned.

You can generate the expression of the second check from the result of the first one:

  • check(jsonpath("/id").saveAs(“id”)) // save the id from the first request

  • check(jsonpath("/_[type=‘NEW’][id=’${id}’]")) // reuse it in the second one to build the JsonPath expression (note that _ means “root array”, only available in 1.4.6)

Cheers,

Stéphane