fix memory leaks in tests, #20659

akka-docs/rst/java/code/docs/actor/FaultHandlingTest.java

@@ -151,7 +151,7 @@ public class FaultHandlingTest extends AbstractJavaTest {
 
   @BeforeClass
   public static void start() {
-    system = ActorSystem.create("test");
+    system = ActorSystem.create("FaultHandlingTest");
   }
 
   @AfterClass

akka-docs/rst/java/code/docs/actor/SchedulerDocTest.java

@@ -22,10 +22,10 @@ import akka.testkit.AkkaJUnitActorSystemResource;
 import org.junit.*;
 
 public class SchedulerDocTest extends AbstractJavaTest {
-
-  @Rule
-  public AkkaJUnitActorSystemResource actorSystemResource =
-    new AkkaJUnitActorSystemResource("SchedulerDocTest", AkkaSpec.testConf());
+  
+  @ClassRule
+  public static AkkaJUnitActorSystemResource actorSystemResource = new AkkaJUnitActorSystemResource("SchedulerDocTest",
+      AkkaSpec.testConf());
 
   private final ActorSystem system = actorSystemResource.getSystem();
   private ActorRef testActor = system.actorOf(Props.create(MyUntypedActor.class));

akka-docs/rst/java/code/docs/camel/CustomRouteTestBase.java

@@ -11,11 +11,14 @@ public class CustomRouteTestBase {
   public void customRoute() throws Exception{
     //#CustomRoute
     ActorSystem system = ActorSystem.create("some-system");
-    Camel camel = CamelExtension.get(system);
-    ActorRef responder = system.actorOf(Props.create(Responder.class), "TestResponder");
-    camel.context().addRoutes(new CustomRouteBuilder(responder));
-    //#CustomRoute
-    system.stop(responder);
-    JavaTestKit.shutdownActorSystem(system);
+    try {
+      Camel camel = CamelExtension.get(system);
+      ActorRef responder = system.actorOf(Props.create(Responder.class), "TestResponder");
+      camel.context().addRoutes(new CustomRouteBuilder(responder));
+      //#CustomRoute
+      system.stop(responder);
+    } finally {
+      JavaTestKit.shutdownActorSystem(system);
+    }
   }
 }

akka-docs/rst/java/code/docs/pattern/SchedulerPatternTest.java

@@ -130,6 +130,11 @@ public class SchedulerPatternTest extends AbstractJavaTest {
       testSchedule(probe, props, duration("3000 millis"), duration("2500 millis"));
     }};
   }
+  
+  @Test
+  public void doNothing() {
+    // actorSystemResource.after is not called when all tests are ignored
+  }
 
   public static class TestSchedule extends JavaTestKit {
     private ActorSystem system;