How do I set up and tear down tests in JUnit 5?

How do I set up and tear down tests in JUnit 5?

In JUnit 5, you can use the @BeforeEach and @AfterEach annotations for setup and teardown methods. @BeforeEach runs before each test, while @AfterEach runs after each test.

Can you give me an example of how to use these annotations?

Sure! Here's a simple example:

import org.junit.jupiter.api.*;

public class MyTests {
    @BeforeEach
    void setUp() {
        // Code to set up test environment
    }

    @AfterEach
    void tearDown() {
        // Code to clean up after tests
    }

    @Test
    void testSomething() {
        // Your test code here
    }
}

What if I want to set up and tear down for all tests in a class?

In that case, you can use @BeforeAll and @AfterAll annotations. These methods must be static and will run once before and after all tests in the class.

Can you show me an example of that?

Absolutely! Here's how you can do it:

import org.junit.jupiter.api.*;

public class MyTests {
    @BeforeAll
    static void setUpAll() {
        // Code to set up once for all tests
    }

    @AfterAll
    static void tearDownAll() {
        // Code to clean up once after all tests
    }

    @Test
    void testSomething() {
        // Your test code here
    }
}