How do I write unit tests for a Spring Boot application?

How do I write unit tests for a Spring Boot application?

To write unit tests in Spring Boot, you can use JUnit and Mockito. Start by adding the necessary dependencies in your pom.xml.

What dependencies do I need to include?

You need to include spring-boot-starter-test in your pom.xml. This starter includes JUnit, Mockito, and other testing libraries.

Can you give me an example of a simple unit test?

Sure! Here's a simple example:

import static org.mockito.Mockito.*;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
public class MyServiceTest {

    @Autowired
    private MyService myService;

    @Test
    void testServiceMethod() {
        // Arrange
        String input = "test";
        // Act
        String result = myService.serviceMethod(input);
        // Assert
        assertEquals("expectedResult", result);
    }
}

What is the difference between unit tests and integration tests?

Unit tests focus on individual components, while integration tests check how different components work together.