adding a nothingFor step to my setup crashes gatling

[Martijn Kuypers]

I have the following setup 

 //run the test

 setUp(

   put****.inject(

    constantConcurrentUsers(10) during (10 seconds)

    ),

   post*****.inject(

     nothingFor(15 seconds), //1

     constantConcurrentUsers(10) during (10 seconds) //2

    ),

   put****.inject(

     nothingFor(30 seconds), //1

     constantConcurrentUsers(10) during ( 10 seconds) //2

    )

 ).assertions(

     global.responseTime.max.lt(5000),

     forAll.failedRequests.percent.lte(5),

     forAll.responseTime.max.lt(2000)

 ).protocols(httpConf)

}

Everytime I run this I get the following response

Starting gatlingloadtests_gatling_1 ... 

Starting gatlingloadtests_gatling_1 ... done

Attaching to gatlingloadtests_gatling_1

gatling_1  | GATLING_HOME is set to /gatling

gatling_1  | 07:55:58.965 [ERROR] i.g.c.ZincCompiler$ - /gatling/user-files/simulations/***************.*****:120:18: could not find implicit value for evidence parameter of type io.gatling.core.controller.inject.InjectionProfileFactory[Product with Serializable]

gatling_1  |     ******.inject(

gatling_1  |                  ^

gatling_1  | 07:55:58.989 [ERROR] i.g.c.ZincCompiler$ - one error found

gatling_1  | 07:55:58.990 [ERROR] i.g.c.ZincCompiler$ - Compilation crashed

gatling_1  | sbt.internal.inc.CompileFailed: null

gatling_1  | at sbt.internal.inc.AnalyzingCompiler.call(AnalyzingCompiler.scala:242)

gatling_1  | at sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:111)

gatling_1  | at sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:90)

gatling_1  | at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$3(MixedAnalyzingCompiler.scala:82)

gatling_1  | at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:12)

gatling_1  | at sbt.internal.inc.MixedAnalyzingCompiler.timed(MixedAnalyzingCompiler.scala:133)

gatling_1  | at sbt.internal.inc.MixedAnalyzingCompiler.compileScala$1(MixedAnalyzingCompiler.scala:73)

gatling_1  | at sbt.internal.inc.MixedAnalyzingCompiler.compile(MixedAnalyzingCompiler.scala:116)

gatling_1  | at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1(IncrementalCompilerImpl.scala:307)

gatling_1  | at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1$adapted(IncrementalCompilerImpl.scala:307)

gatling_1  | at sbt.internal.inc.Incremental$.doCompile(Incremental.scala:106)

gatling_1  | at sbt.internal.inc.Incremental$.$anonfun$compile$4(Incremental.scala:87)

gatling_1  | at sbt.internal.inc.IncrementalCommon.recompileClasses(IncrementalCommon.scala:116)

gatling_1  | at sbt.internal.inc.IncrementalCommon.cycle(IncrementalCommon.scala:63)

gatling_1  | at sbt.internal.inc.Incremental$.$anonfun$compile$3(Incremental.scala:89)

gatling_1  | at sbt.internal.inc.Incremental$.manageClassfiles(Incremental.scala:134)

gatling_1  | at sbt.internal.inc.Incremental$.compile(Incremental.scala:80)

gatling_1  | at sbt.internal.inc.IncrementalCompile$.apply(Compile.scala:67)

gatling_1  | at sbt.internal.inc.IncrementalCompilerImpl.compileInternal(IncrementalCompilerImpl.scala:311)

gatling_1  | at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileIncrementally$1(IncrementalCompilerImpl.scala:269)

gatling_1  | at sbt.internal.inc.IncrementalCompilerImpl.handleCompilationError(IncrementalCompilerImpl.scala:159)

gatling_1  | at sbt.internal.inc.IncrementalCompilerImpl.compileIncrementally(IncrementalCompilerImpl.scala:238)

gatling_1  | at sbt.internal.inc.IncrementalCompilerImpl.compile(IncrementalCompilerImpl.scala:69)

gatling_1  | at io.gatling.compiler.ZincCompiler$.doCompile(ZincCompiler.scala:210)

gatling_1  | at io.gatling.compiler.ZincCompiler$.delayedEndpoint$io$gatling$compiler$ZincCompiler$1(ZincCompiler.scala:215)

gatling_1  | at io.gatling.compiler.ZincCompiler$delayedInit$body.apply(ZincCompiler.scala:39)

gatling_1  | at scala.Function0.apply$mcV$sp(Function0.scala:34)

gatling_1  | at scala.Function0.apply$mcV$sp$(Function0.scala:34)

gatling_1  | at scala.runtime.AbstractFunction0.apply$mcV$sp(AbstractFunction0.scala:12)

gatling_1  | at scala.App.$anonfun$main$1$adapted(App.scala:76)

gatling_1  | at scala.collection.immutable.List.foreach(List.scala:388)

gatling_1  | at scala.App.main(App.scala:76)

gatling_1  | at scala.App.main$(App.scala:74)

gatling_1  | at io.gatling.compiler.ZincCompiler$.main(ZincCompiler.scala:39)

gatling_1  | at io.gatling.compiler.ZincCompiler.main(ZincCompiler.scala)

gatling_1  | 07:56:00.194 [ERROR] i.g.a.Gatling$ - Run crashed

gatling_1  | java.lang.ClassNotFoundException: ***********.*****

gatling_1  | at java.net.URLClassLoader.findClass(URLClassLoader.java:381)

gatling_1  | at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

gatling_1  | at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)

gatling_1  | at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

gatling_1  | at java.lang.Class.forName0(Native Method)

gatling_1  | at java.lang.Class.forName(Class.java:264)

gatling_1  | at io.gatling.app.Selection$Selector.$anonfun$singleSimulationFromConfig$2(Selection.scala:70)

gatling_1  | at scala.util.Try$.apply(Try.scala:209)

gatling_1  | at io.gatling.app.Selection$Selector.findUserDefinedSimulationInClassloader$1(Selection.scala:70)

gatling_1  | ... 15 common frames omitted

gatling_1  | Wrapped by: java.lang.IllegalArgumentException: User defined Simulation class *********.***** could not be loaded

gatling_1  | at io.gatling.app.Selection$Selector.findUserDefinedSimulationInClassloader$1(Selection.scala:79)

gatling_1  | at io.gatling.app.Selection$Selector.$anonfun$singleSimulationFromConfig$4(Selection.scala:84)

gatling_1  | at scala.Option.orElse(Option.scala:289)

gatling_1  | at io.gatling.app.Selection$Selector.$anonfun$singleSimulationFromConfig$3(Selection.scala:84)

gatling_1  | at scala.Option.flatMap(Option.scala:171)

gatling_1  | at io.gatling.app.Selection$Selector.singleSimulationFromConfig(Selection.scala:82)

gatling_1  | at io.gatling.app.Selection$Selector.$anonfun$selection$1(Selection.scala:52)

gatling_1  | at scala.Option.getOrElse(Option.scala:121)

gatling_1  | at io.gatling.app.Selection$Selector.selection(Selection.scala:44)

gatling_1  | at io.gatling.app.Selection$.apply(Selection.scala:36)

gatling_1  | at io.gatling.app.Runner.run0(Runner.scala:74)

gatling_1  | at io.gatling.app.Runner.run(Runner.scala:61)

gatling_1  | at io.gatling.app.Gatling$.start(Gatling.scala:74)

gatling_1  | at io.gatling.app.Gatling$.fromArgs(Gatling.scala:47)

gatling_1  | at io.gatling.app.Gatling$.main(Gatling.scala:39)

gatling_1  | at io.gatling.app.Gatling.main(Gatling.scala)

gatling_1  | Exception in thread "main" java.lang.IllegalArgumentException: User defined Simulation class ********.****** could not be loaded

gatling_1  | at io.gatling.app.Selection$Selector.findUserDefinedSimulationInClassloader$1(Selection.scala:79)

gatling_1  | at io.gatling.app.Selection$Selector.$anonfun$singleSimulationFromConfig$4(Selection.scala:84)

gatling_1  | at scala.Option.orElse(Option.scala:289)

gatling_1  | at io.gatling.app.Selection$Selector.$anonfun$singleSimulationFromConfig$3(Selection.scala:84)

gatling_1  | at scala.Option.flatMap(Option.scala:171)

gatling_1  | at io.gatling.app.Selection$Selector.singleSimulationFromConfig(Selection.scala:82)

gatling_1  | at io.gatling.app.Selection$Selector.$anonfun$selection$1(Selection.scala:52)

gatling_1  | at scala.Option.getOrElse(Option.scala:121)

gatling_1  | at io.gatling.app.Selection$Selector.selection(Selection.scala:44)

gatling_1  | at io.gatling.app.Selection$.apply(Selection.scala:36)

gatling_1  | at io.gatling.app.Runner.run0(Runner.scala:74)

gatling_1  | at io.gatling.app.Runner.run(Runner.scala:61)

gatling_1  | at io.gatling.app.Gatling$.start(Gatling.scala:74)

gatling_1  | at io.gatling.app.Gatling$.fromArgs(Gatling.scala:47)

gatling_1  | at io.gatling.app.Gatling$.main(Gatling.scala:39)

gatling_1  | at io.gatling.app.Gatling.main(Gatling.scala)

gatling_1  | Caused by: java.lang.ClassNotFoundException: *******.****

gatling_1  | at java.net.URLClassLoader.findClass(URLClassLoader.java:381)

gatling_1  | at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

gatling_1  | at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)

gatling_1  | at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

gatling_1  | at java.lang.Class.forName0(Native Method)

gatling_1  | at java.lang.Class.forName(Class.java:264)

gatling_1  | at io.gatling.app.Selection$Selector.$anonfun$singleSimulationFromConfig$2(Selection.scala:70)

gatling_1  | at scala.util.Try$.apply(Try.scala:209)

gatling_1  | at io.gatling.app.Selection$Selector.findUserDefinedSimulationInClassloader$1(Selection.scala:70)

gatling_1  | ... 15 more

gatlingloadtests_gatling_1 exited with code 1

if I remove the "NothingFor" from the setup it runs without a problem. 

[Stéphane LANDELLE]

It doesn't "crash" Gatling. Your code just doesn't compile because you're trying to mix open injection steps (nothingFor) and closed ones (constantConcurrentUsers) and that's not possible. Use constantConcurrentUsers(0).

Stéphane Landelle

GatlingCorp CTO

slan...@gatling.io

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[Martijn Kuypers]

Thank you that worked!