How can I import a scala class into another using gatling?

Question

note: I am new to gatling and know almost nothing about Scala.

I am starting the process of converting my load tests from Jmeter to gatling. And I am stuck on how to organize the code base. All the examples that I have been able to find are single file examples.

How can import code from one simulation class into another?

I have this class and test scenario working now:

    package default

import scala.concurrent.duration._

import io.gatling.core.Predef._
import io.gatling.http.Predef._
import io.gatling.jdbc.Predef._

class createGuestUser extends Simulation {


    val userPrefix = System.getProperty("userPrefix", "gatling_load_test") + "_" + scala.util.Random.nextInt + "_"
    val password = System.getProperty("password", "1234567")
    val hostname = System.getProperty("hostname", "http://0.0.0.0")
    val blank_headers = Map("Accept" -> "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8")


    val httpConf = http
        .baseURL("http://0.0.0.0")

    object GetClientToken {     
        val slash = exec(http("Slash")
        .get("/")
        .headers(blank_headers)
        .check(regex("""var appToken = '(.*)';""").find.saveAs("xGlooApplication")) // var appToken = '60e5814d-9271-43b4-8540-157d1c743651';       
        )
    }
.....

And when I try to import the class into another simulation like this:

    package default

import scala.concurrent.duration._

import io.gatling.core.Predef._
import io.gatling.http.Predef._
import io.gatling.jdbc.Predef._

import createGuestUser._

class createAccount extends Simulation {

I get the following error when trying to import.

08:33:57.952 [ERROR] i.g.c.ZincCompiler$ - /Users/dclements/Dev/Gloo/load_testing/gatling/src/createAccount.scala:9: not found: object createGuestUser 08:33:57.954 [ERROR] i.g.c.ZincCompiler$ - import createGuestUser._

Yclept

i would suggest to start class name from upper case – Albanese

Answer 1

just to make compiler happy,

amend declaration: class createGuestUser extends Simulation

to: object createGuestUser extends Simulation

and then you can:

import default.createGuestUser._

Simulations should not be dependent each other. I would extract common code to separate classes e.g. SimulationSetup, ...Scenario

Albanese

I would not use default package but in e.g. simulations. – Albanese

Answer 2

Check the advanced tutorial from the official documentation. There's also a link to sources at the end of the page.

Bunkmate

Thanks for the pointer. But the advanced tutorial does not start to break apart the test suite into multiple files. For example: It would be great if I could re-use the Browse object in another unrelated scenario. – Yclept

Maybe it used to have this use case in the docs? gatling.io/docs/1.5.6/user_documentation/tutorial/… – Yclept

I got it working following the instructions from the previous gatling docs on advanced usage. If you change your answer to point there I'll accept it. – Yclept

@Yclept you can answer your own question, too. I'd love to see your solution, since I'm running into the same problem. – Joliejoliet