Richard Monson-Haefel's Blog

OpenEJB: The BEST way to test EJBs

Advanced EJB Testing with OpenEJB

David Blevin's and I founded OpenEJB some five years ago to create a fast and lightweight EJB container system that could be easily embedded in any application (its even been used in handheld devices). I stayed with the project for the first couple of years, but haven't been very involved in it since. David Blevins, on the other hand, has kept the project going and has continuously improved it (along with a small army of volunteers). Today OpenEJB the EJB container system used with Apache Geronimo - its very powerful, fast, and best of all lightweight.

The fact that OpenEJB is so lightweight and embeddable is why it actually serves as an excellent EJB testing tool. It starts up and deploys EJBs is seconds (that right I said seconds, not minutes). In addition, it provides a robust and fully compliant EJB container system - one that is used by Apache Geronimo for production enviorments.

Rather than create some type of home spun "moch" container system use OpenEJB. All the hard stuff is done - you don't have to re-invent the wheel. As you'll see in Rupp's article, OpenEJB is ridiculously easy to work with and provides you with the best EJB testing framework available today.

I would go a bit further and encourage people who are using commercial products like WebLogic and WebSphere to use OpenEJB in development. A developer can deploy and redeploy his EJBs over and over again quickly, giving him time to focus on developing his EJBs rather than waiting for a server to start-up and deploy an J2EE application - a process that I believe saps as much as 80% of development time.

Comments

• Not that easy
  At present I have an existing EJB project which I would like to test using N.Rupp's method. I have to admit when I read that article it looked pretty easy. However, trying to do it with my app was not that easy.

  Just a note though, I am using the latest snapshot of OpenEJB 2.0 not the one that N.Rupp was using (I think), because I am using the EJB 2.0 stuff.

  Basically what I am looking for is without any XML configuration files, I could just do something like...

  
  protected void setUp() throws Exception {
  Container c = OpenEJB.getContainer();
  c.deploy(new EjbDeploymentInfo(ExampleHome.class, Example.class, ExampleBean.class);
  // Automatic determination by the container whether its session, MDB or entitybean by introspection.
  c.deploy(new EjbDeploymentInfo(ExampleFacadeHome.class, ExampleFacade.class, ExampleFacadeBean.class);

  // Override the security manager to pass in the user "admin" with the "adminrole" priviledges.
  SecurityManager dummySecurityManager = new DummySecurityManager("admin", "adminrole");
  OpenEJB.setSecurityManager(dummySecurityManager);

  Properties props = new Props();
  props.put("...initcontext...", "...Local...Context");
  context = new InitialContext(props);
  }

  
  However, its not as easy as I thought it would be. I guess EJB testing won't be as straight forward as testing on other contexts (with the exception of GUI or HTTP testing which are also hard to do) for a while.

  Posted by: atrajano on July 11, 2004 at 07:39 PM

• OpenEJB 3 is what you want if you have an EJB 1.1, 2.x or EJB 3.0 application that needs embedded testing. OpenEJB 3.0 pics up where OpenEJB 1.0 left off.

  
  No releases of OpenEJB 2.0 were ever made from the OpenEJB website as it was only useable to Geronimo and no one else in any other setting. It is also officially deprecated. Geronimo now uses OpenEJB 3.0 as well.

  
  

  Posted by: dblevins on August 13, 2007 at 11:38 AM

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