Exception is disruption to a normal execution flow of a Java (in general any) program. This disruption can be because of a runtime problem e.g. data problem, initialization problem, etc. or because of a failing business condition. Java is capable of handling all such undesired scenarios elegantly. But when it comes to a developer to use these java generated exceptions to provide enough information to different stakeholders, then few mistakes occur.

Test driven development, automated testing, open source unit testing frameworks, mocking test data, etc. etc. have been buzzing around us for past few years. Most of the Java developers must have used JUnit to write unit test cases at least once. Below are some of the points that I found important while writing JUnit test cases in application development. You can call these as tips, best practices, or whatever you like.

Externalize Data: Move test data out of test classes. You can have helper classes …