akka 2.4.4

Closes #790.

Signed-off-by: Andrew Janke <andrew@apjanke.net>

Formula/akka.rb

@@ -1,11 +1,13 @@
 class Akka < Formula
   desc "Toolkit for building concurrent, distributed, and fault tolerant apps"
   homepage "http://akka.io/"
-  url "https://downloads.typesafe.com/akka/akka_2.11-2.4.0.zip"
-  sha256 "22155144e5828a1dc40fa0a74031d5bf10292e8fb574d1c7fc5fc0ddebd03667"
+  url "https://downloads.typesafe.com/akka/akka_2.11-2.4.4.zip"
+  sha256 "f449ac4a9f401d2c25618c7d49a2e63f9c1c0e608f44854c06a604eec5f72d66"
 
   bottle :unneeded
 
+  depends_on :java
+
   def install
     # Remove Windows files
     rm "bin/akka.bat"
@@ -24,4 +26,73 @@ class Akka < Formula
     bin.install_symlink libexec/"bin/akka"
     bin.install_symlink libexec/"bin/akka-cluster"
   end
+
+  test do
+    (testpath/"src/main/java/sample/hello/HelloWorld.java").write <<-EOS.undent
+      package sample.hello;
+
+      import akka.actor.Props;
+      import akka.actor.UntypedActor;
+      import akka.actor.ActorRef;
+
+      public class HelloWorld extends UntypedActor {
+
+        @Override
+        public void preStart() {
+          // create the greeter actor
+          final ActorRef greeter = getContext().actorOf(Props.create(Greeter.class), "greeter");
+          // tell it to perform the greeting
+          greeter.tell(Greeter.Msg.GREET, getSelf());
+        }
+
+        @Override
+        public void onReceive(Object msg) {
+          if (msg == Greeter.Msg.DONE) {
+            // when the greeter is done, stop this actor and with it the application
+            getContext().stop(getSelf());
+          } else
+            unhandled(msg);
+        }
+      }
+    EOS
+    (testpath/"src/main/java/sample/hello/Greeter.java").write <<-EOS.undent
+      package sample.hello;
+
+      import akka.actor.UntypedActor;
+
+      public class Greeter extends UntypedActor {
+
+        public static enum Msg {
+          GREET, DONE;
+        }
+
+        @Override
+        public void onReceive(Object msg) {
+          if (msg == Msg.GREET) {
+            System.out.println("Hello World!");
+            getSender().tell(Msg.DONE, getSelf());
+          } else
+            unhandled(msg);
+        }
+
+      }
+    EOS
+    (testpath/"src/main/java/sample/hello/Main.java").write <<-EOS.undent
+      package sample.hello;
+
+      public class Main {
+
+        public static void main(String[] args) {
+          akka.Main.main(new String[] { HelloWorld.class.getName() });
+        }
+      }
+    EOS
+    system "javac", "-classpath", Dir[libexec/"lib/**/*.jar"].join(":"),
+      testpath/"src/main/java/sample/hello/HelloWorld.java",
+      testpath/"src/main/java/sample/hello/Greeter.java",
+      testpath/"src/main/java/sample/hello/Main.java"
+    system "java",
+      "-classpath", (Dir[libexec/"lib/**/*.jar"] + [testpath/"src/main/java"]).join(":"),
+      "akka.Main", "sample.hello.HelloWorld"
+  end
 end