Spring boot 튜토리얼 (4) - Testing

14. Unit Testing

1) Service Layer testing

(1) Service Test 생성

(2) Service(Test)

@SpringBootTest
class DepartmentServiceTest {

    @Autowired
    private DepartmentService departmentService;

    @MockBean
    private DepartmentRepository departmentRepository;

    @BeforeEach
    void setUp() {
        Department department =
                Department.builder()
                        .departmentName("IT")
                        .departmentAddress("SEOUL")
                        .departmentCode("IT-06")
                        .departmentId(1L)
                        .build();

        Mockito.when(departmentRepository.findByDepartmentNameIgnoreCase("IT"))
                .thenReturn(department);
    }

    @Test
    @DisplayName("Get Data based on Valid Department Name")
//    @Disabled
    public void whenValidDepartmentName_thenDepartmentShouldFound() {
        String departmentName = "IT";
        Department found = departmentService.fetchDepartmentByName(departmentName);

        assertEquals(departmentName, found.getDepartmentName());
    }
}

2) Repository Layer testing

(1) Repository Test 생성

(2) Repository(Test)

@DataJpaTest
class DepartmentRepositoryTest {

    @Autowired
    private DepartmentRepository departmentRepository;

    @Autowired
    private TestEntityManager entityManager;

    @BeforeEach
    void setUp() {
        Department department =
                Department.builder()
                        .departmentName("Mechanical Engineering")
                        .departmentCode("ME-011")
                        .departmentAddress("Busan")
                        .build();

        entityManager.persist(department);
    }

    @Test
    public void whenFindById_thenReturnDepartment() {
        Department department = departmentRepository.findById(1L).get();

        assertEquals(department.getDepartmentName(), "Mechanical Engineering");
    }
}

3) Controller Layer testing

(1) Controller Test 생성

(2) Controller(Test)

@WebMvcTest(DepartmentController.class)
class DepartmentControllerTest {

    @Autowired
    private MockMvc mockMvc;

    @MockBean
    private DepartmentService departmentService;

    private Department department;

    @BeforeEach
    void setUp() {
        department = Department.builder()
                .departmentAddress("JEJU")
                .departmentCode("IT-06")
                .departmentName("IT")
                .departmentId(1L)
                .build();
    }

    @Test
    void saveDepartment() throws Exception {
        Department inputDepartment = Department.builder()
                .departmentAddress("JEJU")
                .departmentCode("IT-06")
                .departmentName("IT")
                .build();

        Mockito.when(departmentService.saveDepartment(inputDepartment))
                .thenReturn(department);

        mockMvc.perform(MockMvcRequestBuilders.post("/departments")
                .contentType(MediaType.APPLICATION_JSON)
                .content("{\n" +
                        "    \"departmentName\": \"IT\",\n" +
                        "    \"departmentAddress\": \"JEJU\",\n" +
                        "    \"departmentCode\": \"IT-06\"\n" +
                        "}"))
                .andExpect(MockMvcResultMatchers.status().isOk());
    }

    @Test
    void fetchDepartmentById() throws Exception {
        Mockito.when(departmentService.fetchDepartmentById(1L))
                .thenReturn(department);

        mockMvc.perform(MockMvcRequestBuilders.get("/departments/1")
                .contentType(MediaType.APPLICATION_JSON))
                .andExpect(MockMvcResultMatchers.status().isOk())
                .andExpect(MockMvcResultMatchers.jsonPath("$.departmentName")
                        .value(department.getDepartmentName()));

    }
}

15. Adding Config in properties file

application.properties 적용

// application.properties
welcome.message = Welcome to Daily Code Buffer!!

@RestController
public class HelloController {

    @Value("${welcome.message}")
    private String welcomeMessage;

    @GetMapping("/")
    public String hellowWorld() {
        return welcomeMessage;
    }

}

16. Adding application.yml file

application.yml 적용

server:
  port: 8082
spring:
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    username: root
    url: jdbc:mysql://localhost:3306/dcbapp
    password: password
  jpa:
    hibernate:
      ddl-auto: update
    show-sql: 'true'
welcome:
  message: Welcome to Daily Code Buffer!!

참고 : Spring Boot Tutorial | Full In-depth Course - Daily Code Buffer