Spring Boot FAQ: Top Questions

You can test Spring Boot controllers using @WebMvcTest along with MockMvc to simulate HTTP requests.

🗺️ Steps:

1. Annotate test class with @WebMvcTest.
2. Use MockMvc to perform requests and assert results.

📥 Example:

@WebMvcTest(HelloController.class)
public class HelloControllerTest {

  @Autowired
  private MockMvc mockMvc;

  @Test
  public void shouldReturnGreeting() throws Exception {
    mockMvc.perform(get("/hello"))
           .andExpect(status().isOk())
           .andExpect(content().string("Hello, Spring Boot!"));
  }
}

🏆 Expected Output:

Test passes if endpoint returns correct response.

🛠️ Use Cases:

• Testing REST API endpoints in isolation.
• Validating response format and HTTP status.