How do I test REST controllers in Spring Boot?

How do I test REST controllers in Spring Boot?

You can use Spring's MockMvc to test your REST controllers. It allows you to perform requests and assert responses.

Can you show me a simple example of using MockMvc?

Sure! First, you need to set up MockMvc in your test class. Here's a basic example:

@RunWith(SpringRunner.class)
@WebMvcTest(MyController.class)
public class MyControllerTest {

    @Autowired
    private MockMvc mockMvc;

    @Test
    public void testGetEndpoint() throws Exception {
        mockMvc.perform(get("/api/my-endpoint"))
               .andExpect(status().isOk())
               .andExpect(content().string(containsString("Expected Response")));
    }
}

What dependencies do I need for testing with MockMvc?

You need to include spring-boot-starter-test in your pom.xml or build.gradle. This starter includes MockMvc and other testing utilities.

Are there any best practices for testing REST controllers?

Yes! Some best practices include testing all possible response statuses, using meaningful test names, and keeping tests isolated.