Gain insights into unit testing with JUnit 5. Learn about assertions, assumptions, nested and parameterized tests, advanced JUnit 5 concepts, and integrating tests with Maven and Gradle.

Unit Testing Java Applications using JUnit 5_468 x 60 copy.png

junit5.tar.gz

mvn clean test

Unit Testing is a basic and essential skill to learn for any developer. In this course, you will learn what unit tests are, why they are important, and how to test your Java applications using the JUnit 5 Framework —  the most popular unit testing framework in the market for Java developers.

You will start with the fundamentals of Unit Testing and JUnit 5 and then gradually you will dive deep into the core concepts like assertions, assumptions, different types of tests like nested tests, parameterized tests, repeated tests, and more.

You will also learn some advanced concepts of JUnit 5 like the JUnit 5 extension model, dependency injection, how to migrate existing unit tests from JUnit 4 to JUnit 5, and how to integrate your unit tests with Maven and Gradle.

Unit Testing Java Applications using JUnit 5

Congratulations on completing this course!

We have covered various topics to help you get started with JUnit testing, including:

- What unit testing is and why it's important.
- Architecture of JUnit 5.
- Core concepts of JUnit 5, like assertions, assumptions, conditional tests, parameterized tests, nested tests, and repeated tests.
- Dynamic tests using the `@TestFactory` annotation.
- JUnit 5 extension model.
- Dependency injection in JUnit 5.
- Running JUnit4 tests in JUnit 5.
- Bonus assertion libraries.

To further enhance your knowledge, you can explore intermediate concepts like:

- Test-Driven Development (TDD)
- Behavior Driven Development (BDD)
- Mocking (using frameworks like Mockito)

Regardless of where your testing journey takes you next, good luck and happy learning!

# Recommended Reading

Below are some useful books you can refer to improve your testing knowledge:


* Vladimir Khorikov’s *“Unit Testing: Principles, Practices and Patterns”*.

* Freeman Steve and Pryce Nat’s *“Growing Object-Oriented Software, Guided by Tests”*.

* Tomek Kaczanowski’s *“Practical Unit Testing with JUnit and Mockito”*


What are the next steps you can take to continue your learning after this course?


What's Next?

What are the next steps you can take to continue your learning after this course?

Before We Begin

Introduction to JUnit 5

Junit 5 Core Concepts

Dynamic Tests

Dependency Injection in JUnit 5

JUnit 5 Extensions

Migrating from Junit 4 to Junit 5

Appendix

BONUS: Useful Assertion Libraries

Conclusion

What's Next?