Merge branch 'extensions' into master

akka-actor-tests/src/test/java/akka/actor/JavaExtension.java

@@ -0,0 +1,40 @@
+/**
+ *  Copyright (C) 2009-2011 Typesafe Inc. <http://www.typesafe.com>
+ */
+package akka.actor;
+
+import org.junit.Test;
+
+import com.typesafe.config.ConfigFactory;
+import com.typesafe.config.Config;
+import com.typesafe.config.ConfigParseOptions;
+
+import static org.junit.Assert.*;
+
+public class JavaExtension {
+  
+  static class TestExtension implements Extension<TestExtension> {
+    private ActorSystemImpl system;
+    public static ExtensionKey<TestExtension> key = new ExtensionKey<TestExtension>() {};
+    
+    public ExtensionKey<TestExtension> init(ActorSystemImpl system) {
+      this.system = system;
+      return key;
+    }
+    
+    public ActorSystemImpl getSystem() {
+      return system;
+    }
+  }
+  
+  private Config c = ConfigFactory.parseString("akka.extensions = [ \"akka.actor.JavaExtension$TestExtension\" ]", ConfigParseOptions.defaults());
+
+  private ActorSystem system = ActorSystem.create("JavaExtension", c);
+  
+  @Test
+  public void mustBeAccessible() {
+    final ActorSystemImpl s = system.extension(TestExtension.key).getSystem();
+    assertSame(s, system);
+  }
+  
+}