[2.4.6] ClassLoader problem when running tests in SBT

[Edmondo Porcu]

Hello,

when I try to run my tests from SBT the first time they correctly compile and execute.

On the second run, I get the following error:

java.lang.ClassCastException: interface akka.event.LoggingFilter is not assignable from class akka.event.DefaultLoggingFilter (ReflectiveDynamicAccess.scala:23)

[error] akka.actor.ReflectiveDynamicAccess$$anonfun$getClassFor$1.apply(ReflectiveDynamicAccess.scala:23)

[error] akka.actor.ReflectiveDynamicAccess$$anonfun$getClassFor$1.apply(ReflectiveDynamicAccess.scala:20)

[error] akka.actor.ReflectiveDynamicAccess.getClassFor(ReflectiveDynamicAccess.scala:20)

[error] akka.actor.ReflectiveDynamicAccess.createInstanceFor(ReflectiveDynamicAccess.scala:38)

In my Specs2 tests I am creating and tearing down an ActorSystem (I will eventually move to a single shared actor systems across multiple tests, but it should not make any difference). How can I address this issue? Restarting SBT solves it, but obviously it is not a sustainable solution

Thanks

Edmondo

[Viktor Klang]

Edmondo,

when you create your ActorSystem you'll have to provide it with a stable ClassLoader.

Ask on the sbt-ML which ClassLoader is preferrable.

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Cheers,

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[Edmondo Porcu]

Thanks a lot, how do you test inside akka project itself?

[Viktor Klang]

We don't use specs2 afaik

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Cheers,
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[Akka Team]

We use Scalatest, but Specs2 should work fine as well. There is most likely something special in your project setup or tests. 

For example it could be that you run the tests non-forked and keep a reference to the DefaultLoggingFilter in an object that lives across test runs.

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Johan