Testing with Mockito

During class, we have been doing many testing methods including Junit 5 and for the past two weeks we have been using Mockito, so for today’s blog, I want to focus more on the framework and testing with Mockito. Before we get started let us talk about what is mocking. Mocking is a process of developing the objects that act as the mock or clone of the real objects. In another word, mocking is a technique where mock objects are used instead of real objects. The purpose is to isolate and focus on the code being tested. Mock uses objects such as Fakes, Stubs, and mocks. A fake object has working implementation but takes shortcuts which makes them not suitable for production. Stub object usually does not respond to anything outside that is programmed in for the test. Mocks are objects that are preprogrammed with expectations which form a specification of the call that is called to receive.

Now let us move on to what Mockito is, Mockito is a java based mocking framework that internally uses the Java Reflection API to generate mock objects for a specific interface. Mock objects as I explained previously are used as dummy objects. The main purpose of using the Mockito framework is to simplify the development by using mocking external dependencies and use them in the test code. Few benefits of Mockito include writing beautiful tests with a clean & simple API, it creates mock objects using annotations like for example @Mock, and In Mockito, there is no requirement for writing your mock objects. The first link I have provided gives a lot of detailed examples of Mockito. It has helped me to learn the framework fully. I highly recommend to check it out and follow the example.

https://www.vogella.com/tutorials/Mockito/article.html

https://site.mockito.org/

https://www.javatpoint.com/mockito