How to filter jsonPath array elements by comparing value by a not-equals operator

Gatling (Open-Source)
1

I couldn’t find in the JsonPath documentation an operator for ‘not equals’ such as ‘!=’ in Scala or ‘<>’ in SQL.

Using a JSON such as this one:

{“array”:{“items”:[{“item”:“expectedValue”},{“item”:“invalidValue”}]}}

I would like to run this jsonPath query in a check AND make sure I get an empty list:
$.array.items[?(@.item!=‘expectedValue’)]

The problem is that both the ‘!=’ and the ‘<>’ operators seem to be unsupported in JsonPath.

Thanks in advance.

2

Use ofType in order to grab the parts of the JSON tree you’re interested in, and then Either use a transform step, or write your own Validator if your logic is too complex.

3

Thanks.
How do I create a custom validator? I couldn’t find details in the documentation you shared.

Do I need to create an extractor an extractorFactory and a checkBuilder like you did in the Gatling code?
If yes, is there possibly a simpler way to do it?

4

Doc wasn’t up-to-date here: https://github.com/gatling/gatling/issues/2776

5

For some reason the change you made is still not available in the documentation. Strange…

Still, I don’t get it. Using version 2.1.7 within a check I do not have a “validate” method available for call. What I do have are
ValidatorCheckBuilder2Check
ValidatorCheckBuilder2CheckBuilder

Can you please assemble a minimal code sample that would show how to use custom validators?

Thanks in advance
Ori

6

For some reason the change you made is still not available in the
documentation. Strange...

Doc is only published when we release.

Still, I don't get it. Using version 2.1.7 within a check I do not have a
"validate" method available for call. What I do have are
ValidatorCheckBuilder2Check
ValidatorCheckBuilder2CheckBuilder

It's definitively there:
https://github.com/gatling/gatling/blob/2.1.X/gatling-core/src/main/scala/io/gatling/core/check/CheckBuilder.scala#L112

Can you please assemble a minimal code sample that would show how to use
custom validators?

Sorry, don't have time.
Have a look at the doc commit.