[Spring Boot] REST API 만들기(6) - Service 구현 및 단위 테스트(Junit5)

REST API 만들기(6) - Service 구현 및 단위 테스트

TodoService.java를 구현한 후 JUnit5을 사용하여 단위 테스트를 작성하세요.

1. TodoService.java

package com.example.springbootrestapi.service;

import com.example.springbootrestapi.domain.Todo;
import com.example.springbootrestapi.mapper.TodoMapper;
import java.util.List;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;
import org.springframework.util.ObjectUtils;

@RequiredArgsConstructor
@Service
public class TodoService {

  private final TodoMapper todoMapper;

  /**
   * To-Do 조회
   */
  public List<Todo.Response> getTodos(Todo.Request todoRequest) {
    return todoMapper.getTodos(todoRequest);
  }

  /**
   * To-Do 상세 조회
   */
  public Todo.Response getTodoById(int id) {
    return todoMapper.getTodoById(id);
  }

  /**
   * To-Do 저장
   */
  public Todo.Response insertTodo(Todo.Request todoRequest) {

    Todo.Response todoResponse = Todo.Response.builder().build();

    todoMapper.insertTodo(todoRequest);
    if (!ObjectUtils.isEmpty(todoRequest.getId())) {
      todoResponse = todoMapper.getTodoById(todoRequest.getId());
    }

    return todoResponse;
  }

  /**
   * To-Do 수정
   */
  public Todo.Response updateTodo(Todo.Request todoRequest) {

    Todo.Response todoResponse = Todo.Response.builder().build();

    todoMapper.updateTodo(todoRequest);
    if (!ObjectUtils.isEmpty(todoRequest.getId())) {
      todoResponse = todoMapper.getTodoById(todoRequest.getId());
    }

    return todoResponse;
  }

  /**
   * To-Do 삭제
   */
  public int deleteTodoById(int id) {
    return todoMapper.deleteTodoById(id);
  }
}

2. TestTodoService.java

package com.example.springbootrestapi.service;

import com.example.springbootrestapi.domain.Todo;
import com.example.springbootrestapi.domain.Todo.Response;
import com.example.springbootrestapi.mapper.TodoMapper;
import java.util.List;
import javax.annotation.Resource;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.ActiveProfiles;
import org.springframework.transaction.annotation.Transactional;

@SpringBootTest
@ActiveProfiles("local")
class TodoServiceTest {

  @Resource
  TodoService todoService;

  @Resource
  TodoMapper todoMapper;

  @Transactional
  @DisplayName("getTodos_To-Do 목록 조회")
  @Test
  void testGetTodos() {

    // Given
    insertTodo("Title Junit Test Insert 01", "Description Junit Test Insert 01", false);
    insertTodo("Title Junit Test Insert 02", "Description Junit Test Insert 02", true);
    insertTodo("Title Junit Test Insert 03", "Description Junit Test Insert 03", false);
    insertTodo("Title Junit Test Insert 04", "Description Junit Test Insert 04", true);
    insertTodo("Title Junit Test Insert 05", "Description Junit Test Insert 05", false);
    Todo.Request todoRequest = Todo.Request.builder()
        .title("Title Junit Test Insert")
        .description("Description Junit Test Insert")
        .completed(true)
        .build();

    // When
    List<Response> todoResponses = todoService.getTodos(todoRequest);

    // Then
    Assertions.assertTrue(!todoResponses.isEmpty());
  }

  @Transactional
  @DisplayName("getTodoById_To-Do 상세 조회")
  @Test
  void testGetTodoById() {

    // Given
    String title = "Title Junit Test Insert";
    String description = "Description Junit Test Insert";
    boolean completed = false;
    int insertId = insertTodo(title, description, completed);

    // When
    Todo.Response todoResponse = todoService.getTodoById(insertId);

    // Then
    Assertions.assertEquals(title, todoResponse.getTitle());
    Assertions.assertEquals(description, todoResponse.getDescription());
    Assertions.assertEquals(completed, todoResponse.getCompleted());
  }

  @Transactional
  @DisplayName("insertTodo_To-Do 저장")
  @Test
  void testInsertTodo() {

    // Given
    Todo.Request todoRequest = Todo.Request.builder()
        .title("Title Junit Test Insert")
        .description("Description Junit Test Insert")
        .completed(false)
        .build();

    // When
    Todo.Response todoResponse = todoService.insertTodo(todoRequest);

    // Then
    Assertions.assertEquals(todoRequest.getTitle(), todoResponse.getTitle());
    Assertions.assertEquals(todoRequest.getDescription(), todoResponse.getDescription());
    Assertions.assertEquals(todoRequest.getCompleted(), todoResponse.getCompleted());
  }

  @Transactional
  @DisplayName("updateTodo_To-Do 수정")
  @Test
  void testUpdateTodo() {

    // Given
    String title = "Title Junit Test Insert";
    String description = "Description Junit Test Insert";
    boolean completed = false;
    int insertId = insertTodo(title, description, completed);

    Todo.Request todoRequest = Todo.Request.builder()
        .id(insertId)
        .title("Title Junit Test Update")
        .description("Description Junit Test Update")
        .completed(true)
        .build();

    // When
    Todo.Response todoResponse = todoService.updateTodo(todoRequest);

    // Then
    Assertions.assertEquals(todoRequest.getTitle(), todoResponse.getTitle());
    Assertions.assertEquals(todoRequest.getDescription(), todoResponse.getDescription());
    Assertions.assertEquals(todoRequest.getCompleted(), todoResponse.getCompleted());
  }

  @Transactional
  @DisplayName("deleteTodoById_To-Do 삭제")
  @Test
  void testDeleteTodoById() {

    // Given
    int insertId = insertTodo("Title Junit Test Insert", "Description Junit Test Insert", false);

    // When
    todoService.deleteTodoById(insertId);

    // Then
    Todo.Response todoResponse = todoService.getTodoById(insertId);
    Assertions.assertNull(todoResponse);
  }

  /**
   * To-Do 저장
   */
  int insertTodo(
      String title,
      String description,
      Boolean completed) {

    Todo.Request todoRequest = Todo.Request.builder()
        .title(title)
        .description(description)
        .completed(completed)
        .build();

    todoMapper.insertTodo(todoRequest);

    return todoRequest.getId();
  }
}

3. 단위 테스트 확인
좌측에 초록색 버튼(Run Test)을 클릭 또는 소스 코드에서 우클릭하여 Run을 클릭하여 단위 테스트가 정상적으로 동작하는지 확인하세요. (단축키 : Ctrl + Shift + F10)

 

소스 코드는 Github Repository - https://github.com/tychejin1218/springboot-rest-api (branch : section06) 를 참조하세요.

GitHub에서 프로젝트 복사하기(Get from Version Control) - https://tychejin.tistory.com/325