ClassCastException: Map cannot be cast to Nothing

[Spencer Chastain]

I'm working against the latest snapshot - just pulled and re-tested before I wrote this up.

I'm writing a smoke test that hits all my deployed web services and ensures proper responses.

I'm seeing this exception a lot in my log - it looks like one per scenario:

[ERROR] [11/13/2013 14:24:56.508] [GatlingSystem-akka.actor.default-dispatcher-2] [akka://GatlingSystem/user/$F] scala.collection.immutable.Map$Map1 cannot be cast to scala.runtime.Nothing$

java.lang.ClassCastException: scala.collection.immutable.Map$Map1 cannot be cast to scala.runtime.Nothing$

at io.gatling.http.cache.CacheHandling$.getLastModifiedStore(CacheHandling.scala:49)

at io.gatling.http.cache.CacheHandling$$anonfun$2.apply(CacheHandling.scala:156)

at io.gatling.http.cache.CacheHandling$$anonfun$2.apply(CacheHandling.scala:153)

at scala.Function1$$anonfun$andThen$1.apply(Function1.scala:55)

at io.gatling.http.cache.CacheHandling$.cache(CacheHandling.scala:172)

at io.gatling.http.ahc.AsyncHandlerActor$$anonfun$updateCache$1.apply(AsyncHandlerActor.scala:49)

at io.gatling.http.ahc.AsyncHandlerActor$$anonfun$updateCache$1.apply(AsyncHandlerActor.scala:49)

at scala.Function1$$anonfun$andThen$1.apply(Function1.scala:55)

at scala.Function1$$anonfun$andThen$1.apply(Function1.scala:55)

at io.gatling.http.ahc.AsyncHandlerActor.regularExecuteNext$1(AsyncHandlerActor.scala:124)

at io.gatling.http.ahc.AsyncHandlerActor.executeNext(AsyncHandlerActor.scala:155)

at io.gatling.http.ahc.AsyncHandlerActor.logAndExecuteNext(AsyncHandlerActor.scala:163)

at io.gatling.http.ahc.AsyncHandlerActor.ok(AsyncHandlerActor.scala:167)

at io.gatling.http.ahc.AsyncHandlerActor.checkAndProceed$1(AsyncHandlerActor.scala:221)

at io.gatling.http.ahc.AsyncHandlerActor.io$gatling$http$ahc$AsyncHandlerActor$$processResponse(AsyncHandlerActor.scala:236)

at io.gatling.http.ahc.AsyncHandlerActor$$anonfun$receive$1.applyOrElse(AsyncHandlerActor.scala:65)

at akka.actor.ActorCell.receiveMessage(ActorCell.scala:498)

at akka.actor.ActorCell.invoke(ActorCell.scala:456)

at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:237)

at akka.dispatch.Mailbox.run(Mailbox.scala:219)

at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:386)

at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)

at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)

at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)

at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)

This is how I'm building my scenario:

  def addChecks(req: HttpRequestWithBodyBuilder, checks: Iterable[HttpCheck]) = {

    var req1 = req

    checks.foreach(c => req1 = req1.check(c))

    req1

  }

  def create(title: String, url: String, method: String = "get", body: Body = new StringBody(""), checks: Iterable[HttpCheck] = Nil) = {

    val test = method match {

      case "get"|"GET" => addChecks(http(title).httpRequestWithBody(method, Left(url)).check(status is 200), checks)

      case _ => addChecks(http(title).httpRequestWithBody(method, Left(url)).body(body).check(status is 200), checks)

    }

    scenario(title)

      .exec(

        test

      )

      .inject(

        atOnceUsers(1)

      )

  }

So my setup looks like:

  setUp(

    create(...),

    create(...),

    ...

    create(...)

  )

The exception doesn't appear to be impacting my test performance though - just a nuisance that kinda makes my results questionable.  Would you like me to open a ticket for this?

--Spencer

[Stéphane Landelle]

Hi Spencer,

I just pushed the fix.

Sorry for the inconvenience.

Cheers,

Stéphane

2013/11/13 Spencer Chastain <secha...@gmail.com>

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