Akka/Scala example source code file (SnapshotDirectoryFailureSpec.scala)

This example Akka source code file (SnapshotDirectoryFailureSpec.scala) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Akka and Scala source code examples by using tags.

All credit for the original source code belongs to akka.io; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Akka tags/keywords

actor, akka, eventfilter, failed, file, implicitsender, ioexception, persistence, processor, snapshotdirectoryfailurespec, some, string, test, testing, testkit, unit

The SnapshotDirectoryFailureSpec.scala Akka example source code

/**
 * Copyright (C) 2009-2014 Typesafe Inc. <http://www.typesafe.com>
 */

package akka.persistence

import akka.testkit.{ ImplicitSender, EventFilter, TestEvent, AkkaSpec }
import java.io.{ IOException, File }
import akka.actor.{ ActorInitializationException, Props, ActorRef }

object SnapshotDirectoryFailureSpec {
  val inUseSnapshotPath = "target/inUseSnapshotPath"

  class TestProcessor(name: String, probe: ActorRef) extends Processor {

    override def persistenceId: String = name

    override def preStart(): Unit = ()

    def receive = {
      case s: String               ⇒ saveSnapshot(s)
      case SaveSnapshotSuccess(md) ⇒ probe ! md.sequenceNr
      case other                   ⇒ probe ! other
    }
  }
}

class SnapshotDirectoryFailureSpec extends AkkaSpec(PersistenceSpec.config("leveldb", "SnapshotDirectoryFailureSpec", extraConfig = Some(
  s"""
    |akka.persistence.snapshot-store.local.dir = "${SnapshotDirectoryFailureSpec.inUseSnapshotPath}"
  """.stripMargin))) with ImplicitSender {

  import SnapshotDirectoryFailureSpec._

  val file = new File(inUseSnapshotPath)

  override protected def atStartup() {
    if (!file.createNewFile()) throw new IOException(s"Failed to create test file [${file.getCanonicalFile}]")
  }

  override protected def afterTermination() {
    if (!file.delete()) throw new IOException(s"Failed to delete test file [${file.getCanonicalFile}]")
  }

  "A local snapshot store configured with an failing directory name " must {
    "throw an exception at startup" in {
      EventFilter[ActorInitializationException](occurrences = 1).intercept {
        val processor = system.actorOf(Props(classOf[TestProcessor], "SnapshotDirectoryFailureSpec-1", testActor))
        processor ! "blahonga"
      }
    }
  }
}