What are the core annotations in JUnit 6 and what does each do?

The JUnit 6 annotation model is unchanged from JUnit 5 Jupiter -- this is by design, making migration from JUnit 5 to JUnit 6 primarily a version bump rather than an annotation rewrite.

import org.junit.jupiter.api.*;
import static org.junit.jupiter.api.Assertions.*;

@DisplayName("Order service tests")
class OrderServiceTest {

    OrderService service;

    @BeforeAll
    static void initAll() {
        System.out.println("Runs once before all tests");
    }

    @BeforeEach
    void setUp() {
        service = new OrderService();
    }

    @Test
    @DisplayName("New order has PENDING status")
    void newOrderIsPending() {
        Order order = service.create("item-1", 2);
        assertEquals(Status.PENDING, order.getStatus());
    }

    @Test
    @Disabled("Not implemented yet")
    void cancelledOrderIsRefunded() {
        // TODO
    }

    @AfterEach
    void tearDown() {
        service = null;
    }

    @AfterAll
    static void tearDownAll() {
        System.out.println("Runs once after all tests");
    }
}

Invest now in Acorns!!! 🚀
Join Acorns and get your $5 bonus!

Acorns is a micro-investing app that automatically invests your "spare change" from daily purchases into diversified, expert-built portfolios of ETFs. It is designed for beginners, allowing you to start investing with as little as $5. The service automates saving and investing. Disclosure: I may receive a referral bonus.

Invest now!!! Get Free equity stock (US, UK only)!

Use Robinhood app to invest in stocks. It is safe and secure. Use the Referral link to claim your free stock when you sign up!.

The Robinhood app makes it easy to trade stocks, crypto and more.

Webull! Receive free stock by signing up using the link: Webull signup.