Developer testing EJB applications can be best described as challenging. Due to the managed nature of EJBs, extensive fixtures are required for container configuration, deployment, and database seeding. Thankfully, there are a number of frameworks available to elevate some of the burden.

Check out these useful resources:

• Container Driven Testing: Advanced EJB Testing with OpenEJB (TSS, June 2004)
• Testing EJBs with Cactus
• A lightweight nonintrusive EJB testing framework (JavaWorld, Nov 2004)
• JUnitEE Tutorial
• Streamlining Your EJB Tests with MockEJB (dev2dev, Oct 2005)
• Execute EJB JUnit Tests in Your Deployed Apps (DevX.com, May 2005)