JUnit 5 — usage and first test

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:

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

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:

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.

Originally published at www.luxoft-training.com.