What tools and libraries for automated testing have you used in your projects?

In Java projects, I used the following tools and libraries for automated testing:

• JUnit — for writing unit tests, verifying the logic of classes and methods.
• Mockito — for creating mock objects and isolating tested components.
• Selenium WebDriver — for automating web interface testing.
• TestNG — as an alternative to JUnit with extended test management capabilities.
• AssertJ — for convenient and readable assertions in tests.

Example of a simple test with JUnit and Mockito:

import org.junit.jupiter.api.Test;
import static org.mockito.Mockito.*;
import static org.junit.jupiter.api.Assertions.*;

class UserServiceTest {
    @Test
    void testGetUserName() {
        UserRepository repo = mock(UserRepository.class);
        when(repo.findNameById(1)).thenReturn("Ivan");

        UserService service = new UserService(repo);
        String name = service.getUserName(1);

        assertEquals("Ivan", name);
    }
}