What are some examples of integration testing using Mockito?

What are some examples of integration testing using Mockito?

Mockito is a popular framework for mocking in Java. For integration testing, you can use it to simulate dependencies. For example, if you have a service that calls a repository, you can mock the repository to test the service in isolation.

Can you show me a code example?

Sure! Here's a simple example:

@RunWith(SpringRunner.class)
@SpringBootTest
public class MyServiceTest {

    @Mock
    private MyRepository myRepository;

    @InjectMocks
    private MyService myService;

    @Test
    public void testGetData() {
        when(myRepository.findData()).thenReturn(new Data());
        Data result = myService.getData();
        assertNotNull(result);
    }
}

What if I want to test multiple methods?

You can mock multiple methods by chaining the when calls. For example:

when(myRepository.findData()).thenReturn(new Data());
when(myRepository.findOtherData()).thenReturn(new OtherData());

Are there any best practices for using Mockito in integration tests?

Yes! Some best practices include keeping your tests isolated, using @InjectMocks for the class under test, and verifying interactions with mocks to ensure your code behaves as expected.