Pragmatic Unit Testing in Java with JUnit, 3rd Edition

Creating Arbitrary Test Groups Using Tags

JUnit 5 lets you mark a test class or a test method with the @Tag annotation. You can use these tags as the basis for running arbitrary sets of tests with JUnit. This is known as filtering your tests.

Let’s take a look at an example. When making changes to the Account class, you should run all tests in both AnAccount and AFundedAccount. You could run all the tests in the package containing both these classes, but you can also use tags to be precise about the subset of tests to run.

Mark both two classes with the @Tag annotation:

utj3-junit/01/src/test/java/tags/AnAccount.java

import org.junit.jupiter.api.Tag;
import org.junit.jupiter.api.Test;
// ...

@Tag("account")
class AnAccount ...