Kryo Scala Map Seq Serialization with Twitter Chill

KryoScalaSeqMap.scala

import org.objenesis.strategy.StdInstantiatorStrategy
import org.scalatest.{FlatSpecLike, Matchers}

class MyTest extends FlatSpecLike with Matchers {
  "the test" should "hasKnownProfiles" in {
    import com.twitter.chill.{KryoInstantiator, KryoPool}

    val POOL_SIZE = 10
    val instantiator: KryoInstantiator = new KryoInstantiator()
      .setInstantiatorStrategy(new StdInstantiatorStrategy)

    val kryo = KryoPool.withByteArrayOutputStream(POOL_SIZE, instantiator)

    val scalaMap = Map("Hello" -> Seq(Map("toto" -> "caca")))

    val ser = kryo.toBytesWithClass(scalaMap)
    val der = kryo.fromBytes(ser)

    der shouldEqual (scalaMap)
  }
}