Gatling: Dynamically assemble HttpCheck for multiple Css selectors - scala

Question

I am working on a Gatling test framework that can be parameterized through external config objects. One use case I have is that there may be zero or more CSS selector checks that need to be saved to variables. In my config object, I've implemented that as a Map[String,(String, String)], where the key is the variable name, and the value is the 2-part css selector.
I am struggling with how to dynamically assemble the check. Here's what I got so far:
val captureMap: Map[String, (String, String)] = config.capture
httpRequestBuilder.check(
captureMap.map((mapping) => {
val varName = mapping._1
val cssSel = mapping._2
css(cssSel._1, cssSel._2).saveAs(varName)
}).toArray: _* // compilation error here
)
The error I'm getting is:
Error:(41, 10) type mismatch;
found : Array[io.gatling.core.check.CheckBuilder[io.gatling.core.check.css.CssCheckType,jodd.lagarto.dom.NodeSelector,String]]
required: Array[_ <: io.gatling.http.check.HttpCheck]
}).toArray: _*
apparently, I need to turn my CheckBuilder into a HttpCheck, so how do I do that?
Update:
I managed to get it to work by introducing a variable of type HttpCheck and returning it in the next line:
httpRequestBuilder.check(
captureMap.map((mapping) => {
val varName = mapping._1
val cssSel = mapping._2
val check:HttpCheck= css(cssSel._1, cssSel._2).saveAs(varName)
check
}).toArray: _*
)
While this works, it's ugly as hell. Can this be improved?

Answer 1

I had the same issue.
I had the following imports:
import io.gatling.core.Predef._
import io.gatling.http.Predef.http
I changed these imports to:
import io.gatling.core.Predef._
import io.gatling.http.Predef._
import io.gatling.http.request.builder.HttpRequestBuilder.toActionBuilder
which made it work.