Here is a tutorial on Unit Testing in Java with JUnit
While software testing is generally performed by the professional software tester, unit testing is often performed by the software developers working on the project, at that point of time. Unit testing ensures that the specific function is working perfectly. It also reduces software development risks, cost and time. Unit testing is performed by the software developer during the construction phase of the software development life cycle.
The major benefit of unit testing is that it reduces the construction errors during software development, thus improving the quality of the product. Unit testing is about testing classes and methods. JUnit is a testing tool for the Java programming language. It is very helpful when you want to test each unit test cases and develop effective test cases as developer. Here is a hands-on practical tutorial on downloading, installing and performing Unit Testing in Java with JUnit. Before performing Unit Testing in Java with JUnit, having Eclipse IDE installed is a mandatory requirement. It can be downloaded from Eclipse IDE project home-page, ensure you download the latest version to gather major benefits.
This tutorial on JUnit was an article in Open Source For You (OSFY) July 2015 edition written by one of our mentors. Download complete PDF version of the document from the URL provided below. Have a look into it and let us know what you think.