A lightweight nonintrusive EJB testing framework

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Tutorial: A lightweight nonintrusive EJB testing framework

A lightweight nonintrusive EJB testing framework Summary This article presents a simple, easy-to-deploy framework that enables fine-grained tests to be run on the container, making it possible to develop and maintain Enterprise JavaBeans components usin

Tutorial Details:

Enterprise JavaBeans (EJB) has become increasingly less popular among J2EE developers in the last couple of years. Many factors contribute to this poor reputation, but high on the list is the fact that EJB components are inherently difficult to test.
In this article, I present a framework that follows the in-container test approach, but has the advantage of being simple to understand and use. It involves the following:
An additional stateless session bean
An interface that must be implemented for individual tests
An implementation of this interface for each test to be run
A JUnit base class to allow integration with the suite of tests to be executed on the client
A small modification to the build environment
The framework
Before we discuss how the framework works, let's first consider our requirements for an EJB testing mechanism:
The mechanism should be nonintrusive. That is, we should be able to deploy it with minimum interference from the application's development build environment.
Ideally, there should be minimal dependencies on additional external libraries. We'd rather not have to add jar files to the application server's classpath or to the EJB jar file's lib directory to enable the framework.
The test framework should integrate well with the JUnit tests that run on the developer's client machine.

Writing the tests themselves should be easy.

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