JUnit4 Annotations : Test Examples and Tutorial

JUnit4 Annotations are a single big change from JUnit 3 to JUnit 4 which is introduced in Java 5. With annotations creating and running a JUnit test becomes easier and more readable, but you can only take full advantage of JUnit4 if you know the correct meaning of annotations used on this version and how to use them while writing tests. In this

Junit tutorial we will not only understand the meaning of those annotations but also we will see examples of JUnit4 annotations. By the way, this is my first post in unit testing but if you are new here than you may like post 10 tips to write better code comments and 10 Object-oriented design principles for Programmer as well.

JUnit Testing Tips - Constructor is Called Before Executing Test Methods? Example

Even though almost all Java programmers either use JUnit or TestNG for their unit testing need along with some mock object generation libraries e.g. Mockito, but not everyone spends time and effort to learn subtle details of these testing libraries, at least not in proportion to any popular framework like Spring or Hibernate. In this blog post, I am sharing one of such detail, which has puzzled me a couple of years ago. At that time, though I had been using JUnit for a significant time, I wasn't aware that code written inside the constructor of the Test class is executed before each test method.

Top 10 Excuses Programmers Gives to Avoid Unit Testing

Though everyone loves unit tests and everyone agrees with the benefits they bring in, when the time comes to write them, you will see a lot of excuses, even from some of the more experienced and senior developers. At the heart of the problem of not writing unit tests or enough unit tests are two things, first is time pressure i.e. you don't have enough time to complete coding forget about writing unit tests. This problem comes due to erroneous estimation i.e. only estimating time for coding and not including unit testing as part of development.