Pragmatic Unit Testing in Java with JUnit, 3rd Edition

Setting Up and Tearing Down Using Lifecycle Methods

You learned about @BeforeEach in your first JUnit example (see Chapter 1, ​Building Your First JUnit Test​). Let’s take a closer look at this initialization hook, as well as some other useful hooks that JUnit provides.

Initializing with @BeforeEach and @BeforeAll

In ​Abstraction: Eliminating Boring Details​, you learned to use @BeforeEach to put common initialization in one place. Methods annotated with @BeforeEach are executed before each test in scope.

JUnit also provides another initialization hook known as @BeforeAll, which you must declare as a static method. Each method annotated with @BeforeAll gets executed once per test class and prior to the execution of anything else within that ...