Unit Testing Java Applications using JUnit 5

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.

Intermediate

42 Lessons

3h 30min

Certificate of Completion

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.

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Explanations

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This course includes

33 Playgrounds

This course includes

33 Playgrounds

Course Overview

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 test...Show More

TAKEAWAY SKILLS

Unit Testing

What You'll Learn

Learn unit testing

Write unit tests using JUnit 5

Implement unit testing

Migrate JUnit4 tests to JUnit 5

Integrate JUnit 5 with Maven and Gradle

Learn advanced concepts of JUnit 5

What You'll Learn

Learn unit testing

Course Content

Before We Begin

Get familiar with unit testing Java applications using JUnit 5 and modern testing techniques.

What to Expect

Introduction to JUnit 5

Look at JUnit 5 foundations, architecture, and creating your first unit test.

Introduction to Testing Pyramid and Unit Testing Introduction to JUnit 5 JUnit 5 Architecture Our First Unit Test with JUnit 5 Quiz Yourself on JUnit 5 Architecture

Junit 5 Core Concepts

Explore JUnit 5 core testing concepts: AAA structure, assertions, assumptions, lifecycle, conditional execution, nested, tagged, repeated, and parameterized tests.

Structuring Tests Using the AAA Approach Assertions Assumptions Understanding JUnit 5 Life Cycle

Conditional Execution Nested Tests Tagged Tests Repeated Tests Parameterized Tests Disabled Tests Quiz Yourself on JUnit5 Core Concepts

Dynamic Tests

Grasp the fundamentals of creating and executing dynamic tests using @TestFactory in JUnit 5.

`TestFactory` Annotation

Dependency Injection in JUnit 5

Dig into JUnit 5’s dependency injection features for enhanced test flexibility and reporting.

Using the TestInfoParameterResolver Class Using the TestReporterParameterResovler Class Using the RepetitionInfoParameterResolver Class

JUnit 5 Extensions

8 Lessons

Explore JUnit 5's flexible extension model, from post-processing and conditional execution to lifecycle callbacks and exception handling.

Migrating from Junit 4 to Junit 5

2 Lessons

Approach migrating from JUnit 4 to JUnit 5, highlighting key differences and new rule support.

Appendix

7 Lessons

Step through setting up and running JUnit 5 tests with different tools and configurations.

BONUS: Useful Assertion Libraries

3 Lessons

Get started with assertion libraries like AssertJ, Hamcrest, and JSONAssert to enhance testing.

10.

Conclusion

1 Lesson

Examine further steps and resources to deepen expertise in unit testing.

Course Author

Trusted by 1.4 million developers working at companies

Anthony Walker

@_webarchitect_

Emma Bostian 🐞

@EmmaBostian

Evan Dunbar

ML Engineer

Carlos Matias La Borde

Software Developer

Souvik Kundu

Front-end Developer

Vinay Krishnaiah

Software Developer

Eric Downs

Musician/Entrepeneur

Kenan Eyvazov

DevOps Engineer

Anthony Walker

@_webarchitect_

Emma Bostian 🐞

@EmmaBostian

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