Scala EventFilter类代码示例

//设置package包名称以及导入依赖的类
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"
      }
    }
  }
} 

//设置package包名称以及导入依赖的类
package ex1

import akka.actor.ActorSystem
import akka.testkit.{EventFilter, TestActorRef}
import org.scalatest.{BeforeAndAfterAll, FunSpec}

import scala.concurrent.Await
import scala.concurrent.duration.Duration


class BackOffSupervisorActorSpec extends FunSpec with BeforeAndAfterAll {
  implicit val system = ActorSystem("testsystem")

  override def afterAll = {
    Await.result(system.terminate(), Duration.Inf)
  }

  describe("when it starts with 0") {
    it("throws exceptions until state up to 10") {
      val actor = TestActorRef(BackOffSupervisorActor.props)
      EventFilter[RuntimeException](occurrences = 10) intercept {
        (1 to 11).foreach{ actor ! _ }
      }
    }
  }
} 

//设置package包名称以及导入依赖的类
package aia.testdriven
import akka.testkit.{ CallingThreadDispatcher, EventFilter, TestKit }
import akka.actor.{ Props, ActorSystem }
import com.typesafe.config.ConfigFactory
import org.scalatest.WordSpecLike


import Greeter01Test._

class Greeter01Test extends TestKit(testSystem)
  with WordSpecLike
  with StopSystemAfterAll {

  "The Greeter" must {
    "say Hello World! when a Greeting(\"World\") is sent to it" in {
      val dispatcherId = CallingThreadDispatcher.Id
      val props = Props[Greeter].withDispatcher(dispatcherId)
      val greeter = system.actorOf(props)
      EventFilter.info(message = "Hello World!",
        occurrences = 1).intercept {
          greeter ! Greeting("World")
        }
    }
  }
}

object Greeter01Test {
  val testSystem = {
    val config = ConfigFactory.parseString(
      """
         akka.loggers = [akka.testkit.TestEventListener]
      """)
    ActorSystem("testsystem", config)
  }
} 

//设置package包名称以及导入依赖的类
package org.guangwenz.akka.db.connpool

import akka.actor.ActorSystem
import akka.testkit.{EventFilter, TestKit}
import org.guangwenz.akka.db.connpool.ConnectionPool.PrintDbStats
import org.scalatest.{BeforeAndAfterAll, FlatSpecLike, Matchers}


class DbConnectionPoolExtensionTest extends TestKit(ActorSystem("akkaconntest")) with FlatSpecLike with Matchers with BeforeAndAfterAll {
  override def afterAll(): Unit = {
    TestKit.shutdownActorSystem(system)
  }

  "An Akka Connection Pool Extension " should "return a connection when asked " in {
    val conn = DbConnectionPoolExtension(system).getConnection
    conn.isDefined shouldBe true
  }
  it should "print db stat" in {
    val actor = DbConnectionPoolExtension(system).getConnectionPoolActor.get
    EventFilter.info(pattern = "TotalLeased:.*", occurrences = 1).intercept {
      actor ! PrintDbStats("test")
    }
  }
  it should "return connection" in {
    DbConnectionPoolExtension(system).connect {
      case Right(connection) =>
        connection.isValid(20) shouldBe true
      case Left(reason) =>
        fail(reason)
    }
  }
}