The problem is resolved, root cause was my own inability to follow simple instructions.
@Anders, thank you so much, that resolved the problem. At some point during my attempts to make the test compile (because I picked up old source), the scoping went astray. @Roland, I must have picked up an old version of the documentation, the cut-and-pasted code didn't compile, from that point on my 'fixes' just made things worse. Regarding Java v Scala, I read too much into the comment in the documentation "Due to the conciseness of test DSLs available for Scala ( ScalaTest <http://scalatest.org/>, Specs2 <http://specs2.org/>, ScalaCheck <http://code.google.com/p/scalacheck/>), it may be a good idea to write the test suite in that language even if the main project is written in Java." Sorry if I sounded like I was criticising the Java API, so far I'm loving it. I'm coming to Akka bearing the scars of a big Erlang project and it's a delight to be able to use industry-standard IDE, tools and libraries! Thanks again. Tom. On Tuesday, 7 April 2015 23:38:33 UTC+1, Tom Hay wrote: > > Hi, I'm an Akka noob so apologies if this is a dumb question. I'm trying > to make the Testkit work with Java, starting with JUnit testing. Example > taken from documentation, tweaked to make it compile, source included > below. When I run the test using JUnit 4 in Eclipse Luna, I get the stack > trace below. I'm using 2.11-2.3.9 jars. There hasn't been any discussion > of testkit for a couple of years, has everyone given up on Java and moved > to the Scala version? Or am I doing something stupid? (I have non-testkit > Akka systems runnning happily in the same build / run environment). > > TIA, > Tom. > > akka.actor.ActorInitializationException: You cannot create an instance of > [test.MyActor] explicitly using the constructor (new). You have to use one > of the 'actorOf' factory methods to create a new actor. See the > documentation. > at akka.actor.ActorInitializationException$.apply(Actor.scala:165) > at akka.actor.Actor$class.$init$(Actor.scala:421) > at akka.actor.UntypedActor.<init>(UntypedActor.scala:97) > at test.MyActor.<init>(MyActor.java:12) > at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) > at > sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) > at > sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) > at java.lang.reflect.Constructor.newInstance(Constructor.java:422) > at > org.junit.runners.BlockJUnit4ClassRunner.createTest(BlockJUnit4ClassRunner.java:195) > at > org.junit.runners.BlockJUnit4ClassRunner$1.runReflectiveCall(BlockJUnit4ClassRunner.java:244) > at > org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) > at > org.junit.runners.BlockJUnit4ClassRunner.methodBlock(BlockJUnit4ClassRunner.java:241) > at > org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70) > at > org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) > at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238) > at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63) > at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236) > at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53) > at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229) > at org.junit.runners.ParentRunner.run(ParentRunner.java:309) > at > org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) > at > org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) > at > org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459) > at > org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675) > at > org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382) > at > org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192) > > > > package test; > > import static org.junit.Assert.*; > > import org.junit.Test; > > import akka.actor.ActorSystem; > import akka.actor.Props; > import akka.actor.UntypedActor; > import akka.testkit.TestActorRef; > > public class MyActor extends UntypedActor { > public void onReceive(Object o) throws Exception { > if (o.equals("say42")) { > getSender().tell(42, getSelf()); > } else if (o instanceof Exception) { > throw (Exception) o; > } > } > public boolean testMe() { return true; } > > > @Test > public void demonstrateTestActorRef() { > final ActorSystem system = ActorSystem.apply(); > final Props props = Props.create(MyActor.class); > final TestActorRef<MyActor> ref = TestActorRef.create(system, props, > "testA"); > final MyActor actor = ref.underlyingActor(); > assertTrue(actor.testMe()); > } > } > -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. 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