Learn Mockito & JUnit Unit Testing Fast, Simple & Practical

Learn all the practical skills you need to work as a unit testing pro using Mockito & JUnit 5. Multiple exercises!


What you’ll learn

  • Learn all the basic concepts of unit testing using JUnit, Mockito & more….
  • Learn to develop unit tests using JUnit.
  • Learn to use Mockito on top of JUnit.
  • Learn TDD principles and TDD application in real world programming.
  • Learn the value that unit tests add to an application.
  • Practical demonstrations & exercises along the way for you to test your new unit testing skills.
  • Much more… Everything is covered step by step..

Course Content

  • Unit Testing Introduction –> 5 lectures • 29min.
  • JUnit Framework –> 8 lectures • 1hr 30min.
  • Mocking –> 4 lectures • 20min.
  • Mockito –> 7 lectures • 42min.
  • Conclusion –> 2 lectures • 2min.

Learn Mockito & JUnit Unit Testing Fast, Simple & Practical



The primary goal of this course is to teach you everything you need to become a professional unit tester using JUnit & Mockito.

I will teach you the fundamental concepts of test-driven development and demonstrate how it’s done. In each section I will give you a practical exercise to complete so you can practice your new Mockito & JUnit unit testing skills.

The course will cover topics like:

  • What is unit testing and what is it good for
  • How to install and configure JUnit & Mockito
  • How to write your first unit test
  • JUnit runners
  • What is mocking?
  • How to do mocking with Mockito
  • Mockito pitfalls
  • Much more…

When you are finished with this course, you will be able to write complex unit tests using JUnit and Mockito and to cover as much as possible of the existing code of an application.

By completing this course, you will have laid the foundation for your future development career with your new skills in unit testing.

I look forward to meeting you in the course forum where I’ll be available to help you along the way and answer questions that you might have.



Unit testing is a concept where you test your code at the smallest level possible.
It is similar to how cars are tested. When you are developing different parts for a car, you have to test each part in isolation to verify whether it is working as expected or not. Once the test of that part runs clear, it is then integrated with the other components of the car to verify the integration.

The same is true for software code where we need to test out functionality at the unit/class/interface/method level to ensure that everything is working as intended.

JUnit is a unit testing framework that is widely used by Java programmers all over the world. It is one of the most capable testing frameworks which offers support and integration for a variety of other testing frameworks. It is currently presented in its fifth form, a form that has lots of improvements and support for the latest Java goodies.

Mockito is a mocking framework that allows us to flexibly extend our unit testing capabilities without the overhead of having to maintain a large mock.



1: High demand. Unit testing has become very popular with the addition of CI/CD tools and it has become a basic skill that a developer needs in order to perform his everyday duty.

2: A job requirement. “Unit testing” has become one of the most searched terms for hiring agencies when looking for new developers. Adding JUnit and Mockito skills to your CV will boost your chance of getting hired into your dream job.

3: Creates the best code. Testable code is a readable and maintainable code. Why not use unit testing skills to build reliable applications instead of average applications full of bugs?



Why do we need Mockito when we can use input data instead?
Not using Mockito or any other mocking framework will make your test dependent on the environment that it is run on (databases, environment variables, etc).

Second thing, we do not want to test the JDBC or other frameworks with which we connect different services, because they were tested and it does not bring any value to our development life-cycle.

Why bother unit testing when we have testers?
Well, testers are usually making what we call black-box testing, they cannot find all the edge-cases, they will just make sure that the requirements of the application are met when implementing.
So, a lot of cases remain untouched until the deployment of the application to the end-user.

How can I benefit from this course? 
You can benefit from this by completing it and then sharing it on your professional platforms and adding it to your LinkedIn certifications. This way, when recruiters search for “Mockito”, “JUnit” and “unit testing” as keywords, your profile will show up and they will contact you.



If within 30 days of buying the course you decide that it’s not for you, please get a refund. We only want happy students.



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