Snippet

Testing Controllers with MockMvc

MockMvc allows you to test Spring MVC controllers without starting a full HTTP server. It provides a DSL for performing requests and verifying results.

snippet.java

java

@WebMvcTest(UserController.class)
class UserControllerTest {
    @Autowired
    private MockMvc mockMvc;
 
    @Test
    void shouldReturnUser() throws Exception {
        mockMvc.perform(get("/api/users/1"))
               .andExpect(status().isOk())
               .andExpect(jsonPath("$.name").value("John"));
    }
}

spring

Breakdown

@WebMvcTest(UserController.class)

Focuses the test only on the web layer, ignoring other beans.

.andExpect(status().isOk())

Verifies that the HTTP response code is 200 (OK).

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Testing Controllers with MockMvc

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