Testing Actor preStart() - scala

Question

I moved from Casbah to Reactive Mongo and from that moment I couldn't make work the test of my actor.
I have a dao for the persistence layer and tests for that tier. All the tests passed. So, the only thing that comes to my mind its a problem of synchronization.
" UserActor " should {
val socketActorProbe = new TestProbe(system)
val peyiProbe = new TestProbe(system)
val identifyId = 1
val emailCsr = "csr#gmail.com"
val emailPeyi = "peyi#gmail.com"
val point = new Point[LatLng](new LatLng(-31.4314041, -64.1670626))
" test preStart() " in new WithApplication {
db.createDB(id1, id2, id3)
val userActorRefCsr = TestActorRef[UserActor](Props(classOf[UserActor], emailCsr, socketActorProbe.ref))
val csr = userActorRefCsr.underlyingActor
val userActorRef = TestActorRef[UserActor](Props(classOf[UserActor], emailPeyi, socketActorProbe.ref))
val peyi = userActorRef.underlyingActor
peyi.receive(ActorIdentity(identifyId, Option(userActorRefCsr)))
db.clearDB()
}
Actor class.
class UserActor(email: String, upstream: ActorRef) extends Actor {
import UserActor._
val identifyId = 1
val usersFromDB = ReactiveMongoFactory.db.collection[BSONCollection]("users")
val userDao = new UserDao(usersFromDB)
val meFuture = userDao.findMeByEmail(email)
var friends: Map[String, ActorRef] = Map()
override def preStart() = {
meFuture onComplete { result =>
val emailsFriends: List[String] = userDao.getMyFriendsEmail(result.get.get)
println(emailsFriends)
for (email <- emailsFriends) {
println("sending msg to " + email)
context.actorSelection("/user/" + email) ! Identify(identifyId)
}
}
}
private def giveMyFriend(email: String): Option[ActorRef] = {
for(friend <- friends){
if (friend._1 == email) new Some(friend._2)
}
None
}
def active(another: ActorRef): Actor.Receive = {
case Terminated(`another`) => context.stop(self)
}
def receive = {
case ActorIdentity(`identifyId`, Some(actorRef)) =>
meFuture onComplete { result =>
println(" ... subscribing ... " + result.get.get.basicProfile.email)
actorRef ! Subscribe(result.get.get.basicProfile.email.get)
context.watch(actorRef)
context.become(active(actorRef))
}
case Subscribe(email) =>
friends += (email -> sender)
context watch sender
case Terminated(user) => {
for(friend <- friends){
if (friend._2 == user ) friends -= friend._1 //removing by key
}
}
case UserMoved(email, point) =>
upstream ! UserPosition(email, System.currentTimeMillis(), point.coordinates)
}
}
Im receiving the following output.
The exception is thrown in the following lines of code.
def findMeByEmail(email: String): Future[Option[User]] = {
val query = BSONDocument("email" -> email)
println( " .... finding user ..... email: " + email )
val cursor = users.find(query).cursor[BSONDocument]
val userFuture = cursor.headOption.map(
doc => Some(userReader.read(doc.get))
)
userFuture
}
If I run the test for that method, it's all ok.
describe("get my friends emails") {
it("returns a list of emails") {
val futureUser = userDao.findMeByEmail("csr#gmail.com")
ScalaFutures.whenReady(futureUser) { result =>
val friends = userDao.getMyFriendsEmail(result.get)
assert(friends.length == 2)
}
}
}
Basically, Im trying to look my friends (Other actor) and then register them in a map to have a reference. I couldn't find any good example which shows tests using Reactive Mongo with Actors.
I hope somebody can help me to understand whats going on here. Thanks in advance.