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Describe how to write cluster test, see #2437

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This commit is contained in:
Patrik Nordwall 2012-09-21 11:47:50 +02:00
parent b88f8e4b85
commit 7bb125385b
5 changed files with 160 additions and 41 deletions
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83
akka-samples/akka-sample-cluster/src/multi-jvm/scala/sample/cluster/stats/StatsSampleSpec.scala
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@ -2,7 +2,6 @@ package sample.cluster.stats
import language.postfixOps
import scala.concurrent.util.duration._
import com.typesafe.config.ConfigFactory
import akka.actor.Props
import akka.actor.RootActorPath
@ -11,12 +10,12 @@ import akka.cluster.Member
import akka.cluster.MemberStatus
import akka.cluster.ClusterEvent.CurrentClusterState
import akka.cluster.ClusterEvent.MemberUp
import akka.remote.testkit.MultiNodeConfig
import akka.remote.testkit.MultiNodeSpec
import akka.remote.testkit.STMultiNodeSpec
import akka.testkit.ImplicitSender
object StatsSampleSpec extends MultiNodeConfig {
//#MultiNodeConfig
import akka.remote.testkit.MultiNodeConfig
import com.typesafe.config.ConfigFactory
object StatsSampleSpecConfig extends MultiNodeConfig {
// register the named roles (nodes) of the test
val first = role("first")
val second = role("second")
@ -44,49 +43,95 @@ object StatsSampleSpec extends MultiNodeConfig {
"""))
}
//#MultiNodeConfig
//#concrete-tests
// need one concrete test class per node
class StatsSampleMultiJvmNode1 extends StatsSampleSpec
class StatsSampleMultiJvmNode2 extends StatsSampleSpec
class StatsSampleMultiJvmNode3 extends StatsSampleSpec
class StatsSampleSpecMultiJvmNode1 extends StatsSampleSpec
class StatsSampleSpecMultiJvmNode2 extends StatsSampleSpec
class StatsSampleSpecMultiJvmNode3 extends StatsSampleSpec
//#concrete-tests
abstract class StatsSampleSpec extends MultiNodeSpec(StatsSampleSpec)
with STMultiNodeSpec with ImplicitSender {
//#abstract-test
import org.scalatest.BeforeAndAfterAll
import org.scalatest.WordSpec
import org.scalatest.matchers.MustMatchers
import akka.remote.testkit.MultiNodeSpec
import akka.testkit.ImplicitSender
import StatsSampleSpec._
abstract class StatsSampleSpec extends MultiNodeSpec(StatsSampleSpecConfig)
with WordSpec with MustMatchers with BeforeAndAfterAll
with ImplicitSender {
import StatsSampleSpecConfig._
override def initialParticipants = roles.size
override def beforeAll() = multiNodeSpecBeforeAll()
override def afterAll() = multiNodeSpecAfterAll()
//#abstract-test
"The stats sample" must {
//#startup-cluster
"illustrate how to startup cluster" in within(10 seconds) {
Cluster(system).subscribe(testActor, classOf[MemberUp])
expectMsgClass(classOf[CurrentClusterState])
Cluster(system) join node(first).address
//#addresses
val firstAddress = node(first).address
val secondAddress = node(second).address
val thirdAddress = node(third).address
//#addresses
//#join
Cluster(system) join firstAddress
//#join
system.actorOf(Props[StatsWorker], "statsWorker")
system.actorOf(Props[StatsService], "statsService")
expectMsgAllOf(
MemberUp(Member(node(first).address, MemberStatus.Up)),
MemberUp(Member(node(second).address, MemberStatus.Up)),
MemberUp(Member(node(third).address, MemberStatus.Up)))
MemberUp(Member(firstAddress, MemberStatus.Up)),
MemberUp(Member(secondAddress, MemberStatus.Up)),
MemberUp(Member(thirdAddress, MemberStatus.Up)))
Cluster(system).unsubscribe(testActor)
testConductor.enter("all-up")
}
//#startup-cluster
"show usage of the statsService" in within(5 seconds) {
val service = system.actorFor(RootActorPath(node(third).address) / "user" / "statsService")
//#test-statsService
"show usage of the statsService from one node" in within(5 seconds) {
runOn(second) {
val service = system.actorFor(node(third) / "user" / "statsService")
service ! StatsJob("this is the text that will be analyzed")
val meanWordLength = expectMsgPF() {
case StatsResult(meanWordLength) ⇒ meanWordLength
}
meanWordLength must be(3.875 plusOrMinus 0.001)
}
testConductor.enter("done-2")
}
//#test-statsService
"show usage of the statsService from all nodes" in within(5 seconds) {
val service = system.actorFor(node(third) / "user" / "statsService")
service ! StatsJob("this is the text that will be analyzed")
val meanWordLength = expectMsgPF() {
case StatsResult(meanWordLength) ⇒ meanWordLength
}
meanWordLength must be(3.875 plusOrMinus 0.001)
testConductor.enter("done")
testConductor.enter("done-2")
}
}
}