How do I set up Mockito for unit testing in Java?

How do I set up Mockito for unit testing in Java?

To set up Mockito, first add the Mockito dependency to your project. If you're using Maven, include this in your pom.xml: <dependency> <groupId>org.mockito</groupId> <artifactId>mockito-core</artifactId> <version>4.0.0</version> <scope>test</scope> </dependency>.

What about Gradle? How do I add it there?

For Gradle, add this line to your build.gradle file: testImplementation 'org.mockito:mockito-core:4.0.0'.

Are there any specific annotations I should use?

Yes, you can use @Mock to create mock objects and @InjectMocks to inject those mocks into the class you're testing.

Can you give me an example of a simple test using Mockito?

Sure! Here's a simple example:

import static org.mockito.Mockito.*;

public class MyServiceTest {
    @Mock
    private MyRepository myRepository;

    @InjectMocks
    private MyService myService;

    @Test
    public void testGetData() {
        when(myRepository.getData()).thenReturn("Mock Data");
        String result = myService.getData();
        assertEquals("Mock Data", result);
    }
}