JUnit 5 – usage and first test

How to use JUnit 5 in a Java project, differences between JUnit 4 and JUnit 5 and testing with JUnit5.

16 Oct 2018 3031

Other articles

How to incrementally migrate the data from RDBMS to Hadoop using Sqoop Incremental Last Modified technique? How to implement Slowly Changing Dimensions(SCD) Type 2 in Spark? How to incrementally migrate the data from RDBMS to Hadoop using Sqoop Incremental Append technique? Why MongoDB don't fetch all the matching documents for the query fired How to solve the issue of full disk utilization in HDFS Namenode Can We Use HDFS as Back-up Storage? How to do Indexing in MongoDB with Elastic Search? Part 1 How to do Indexing in MongoDB with Elastic Search? Part 2 How to store data on browser using NoSQL IndexedDB? How to Apply MBTI in HR: Motivation for every day. Groups of People & their Motivations

4. Making the step to JUnit 5

In order to be able to use JUnit 5 in a Java project, the following dependencies must be added to the Maven configuration:

Making the step to JUnit 5.png

The following differences are to be observed between JUnit 4 and JUnit 5:

JUnit 4_JUnit 5_architecture.png

5. First JUnit 5 test

Unlike in JUnit 4, the test class and the test methods can be package private. This is how a simple test will look like:

First JUnit 5 test.JPG

Remarks on the test above:

The method annotated with @BeforeAll will be executed once, before running the tests.
The method annotated with @BeforeEach will be executed each time before running each test.
The method annotated with @Test will be executed in order to verify the functionality.
The method annotated with @AfterEach will be executed each time after running each test.
The method annotated with @AfterAll will be executed once, after running all tests.

Interested in learning how to work with this technology? Check out our JUnit Testing training.

Catalin Tudose
Java and Web Technologies Expert

Share the knowledge

Back to the list

Still have questions?

Connect with us