Modularising scenarios to run in sequence using Gatling

Question

I'm trying to modularise a series of performance tests in Gatling.

Several of the tests execute the same initial path through the pages, so I thought that I could break them down into a series of scenarios, each scenario being a series of shared actions defined in its own file, and then a final Simulation definition that simply executed the specified scenarios one after the other.

What I then need is for my Simulation to run those scenarios in sequence; but I can only find how to run them either concurrently, or with a specified delay between each. Is there any Simulation setup option to run the defined scenarios one after the other without specifying an arbitrary delay?

EDIT

Currently, I have the following set of files:

homepageHeaders.scala

package advanced  object homepageHeaders {      val homepage_headers_1 = Map(         "Accept" -> """text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8""",         "If-Modified-Since" -> """Wed, 20 Mar 2013 15:36:31 +0000""",         "If-None-Match" -> """"1363793791""""     )  } 

homepageChain.scala

package advanced import com.excilys.ebi.gatling.core.Predef._ import com.excilys.ebi.gatling.http.Predef._ import com.excilys.ebi.gatling.jdbc.Predef._ import akka.util.duration._ import homepageHeaders._   object homepageChain {      val homepageChain =          //Homepage         exec(http("homepage")                     .get("/")                     .headers(homepageHeaders.homepage_headers_1)             )  } 

pageHeaders.scala

package advanced  object pageHeaders {      val page_headers_1 = Map(             "Accept" -> """text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"""     )  } 

pageChain.scala

package advanced import com.excilys.ebi.gatling.core.Predef._ import com.excilys.ebi.gatling.http.Predef._ import com.excilys.ebi.gatling.jdbc.Predef._ import akka.util.duration._ import pageHeaders._   object pageChain {      val pageChain =          //Page Menu         exec(http("page request")                     .get("/page1")                     .headers(pageHeaders.page_headers_1)             )  } 

pageSimulation.scala

package advanced import com.excilys.ebi.gatling.core.Predef._ import com.excilys.ebi.gatling.http.Predef._ import com.excilys.ebi.gatling.jdbc.Predef._ import homepageChain._ import pageChain._  class pageSimulation extends Simulation {      val urlBase = "http://www.mytestsite.com"      val httpConf = httpConfig             .baseURL(urlBase)             .acceptHeader("image/png,image/*;q=0.8,*/*;q=0.5")             .acceptEncodingHeader("gzip, deflate")             .acceptLanguageHeader("en-gb,en;q=0.5")             .userAgentHeader("Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20100101 Firefox/17.0")      val pageScenario = scenario("Bodycare Scenario")         .exec(homepageChain.homepageChain)         .exec(pageChain.pageChain)       setUp(             homepageScenario.users(1).protocolConfig(httpConf)         ) } 

The error that I'm getting is:

14:40:50.800 [ERROR] c.e.e.g.a.ZincCompiler$ - /Gatling/user-files/simulations/advanced/pageChain.scala:13: not found: value exec 14:40:50.807 [ERROR] c.e.e.g.a.ZincCompiler$ -          exec(http("page request") 14:40:50.808 [ERROR] c.e.e.g.a.ZincCompiler$ -          ^ 14:40:53.988 [ERROR] c.e.e.g.a.ZincCompiler$ - /Gatling/user-files/simulations/advanced/homepageChain.scala:13: not found: value exec 14:40:53.989 [ERROR] c.e.e.g.a.ZincCompiler$ -          exec(http("homepage") 14:40:53.989 [ERROR] c.e.e.g.a.ZincCompiler$ -          ^ 14:41:17.274 [ERROR] c.e.e.g.a.ZincCompiler$ - two errors found Exception in thread "main" Compilation failed 

Clearly I'm missing something in my definition, but I just don't understand what it is

Answer 1

You can compose chains, not scenarios.

For example:

val login = exec(...)... val foo = exec(...)... val bar = exec(...)... val scn1 = scenario("Scenario1").exec(login).exec(foo) val scn2 = scenario("Scenario2").exec(login).exec(bar) 

Clear?