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

Kotlin으로 REST API 만들기(6) - Service 구현 및 단위 테스트

TodoService.kt를 구현한 후 JUnit5을 사용하여 단위 테스트를 작성하세요.

1. TodoService.kt

package com.example.springbootrestapi.service

import com.example.springbootrestapi.domain.TodoRequest
import com.example.springbootrestapi.domain.TodoResponse
import com.example.springbootrestapi.mapper.TodoMapper
import org.springframework.stereotype.Service

@Service
class TodoService(
  val todoMapper: TodoMapper
) {

  /** To-Do 조회  */
  fun getTodos(todoRequest: TodoRequest): MutableList<TodoResponse> {
    return todoMapper.getTodos(todoRequest)
  }

  /**
   * To-Do 상세 조회
   */
  fun getTodoById(id: Long): TodoResponse {
    return todoMapper.getTodoById(id)
  }

  /**
   * To-Do 저장
   */
  fun insertTodo(todoRequest: TodoRequest): TodoResponse {
    var todoResponse = TodoResponse()
    var result = todoMapper.insertTodo(todoRequest)
    if(result > 0){
      todoRequest.id?.let {
        todoResponse = todoMapper.getTodoById(it)
      }
    }
    return todoResponse
  }

  /**
   * To-Do 수정
   */
  fun updateTodo(todoRequest: TodoRequest): TodoResponse {
    var todoResponse = TodoResponse()
    var result = todoMapper.updateTodo(todoRequest)
    if (result > 0) {
      todoRequest.id?.let {
        todoResponse = todoMapper.getTodoById(it)
      }
    }
    return todoResponse
  }

  /**
   * To-Do 삭제
   */
  fun deleteTodoById(id: Long): TodoResponse {
    var todoResponse = TodoResponse()
    var result = todoMapper.deleteTodoById(id)
    if (result > 0) {
      todoResponse = todoMapper.getTodoById(id)
    }
    return todoResponse
  }
}

2. TestTodoService.kt

package com.example.springbootrestapi.service

import com.example.springbootrestapi.domain.TodoRequest
import com.example.springbootrestapi.mapper.TodoMapper
import org.junit.jupiter.api.Assertions.*
import org.junit.jupiter.api.DisplayName
import org.junit.jupiter.api.Test
import org.springframework.beans.factory.annotation.Autowired
import org.springframework.boot.test.context.SpringBootTest
import org.springframework.test.context.ActiveProfiles
import org.springframework.transaction.annotation.Transactional

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

  @Autowired
  lateinit var todoService: TodoService

  @Autowired
  lateinit var todoMapper: TodoMapper

  @Transactional
  @DisplayName("getTodos_To-Do 목록 조회")
  @Test
  fun 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)

    val todoRequest = TodoRequest().apply {
      this.title = "Title Junit Test Insert"
      this.description = "Description Junit Test Insert"
      this.completed = true
    }

    // When
    val todoResponses = todoService.getTodos(todoRequest)

    // Then
    assertTrue(todoResponses.isNotEmpty())
  }

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

    // Given
    var title = "Title Junit Test Insert"
    var description = "Description Junit Test Insert"
    var completed = false
    var insertId = insertTodo(title, description, completed)

    // When
    var todoResponse = todoService.getTodoById(insertId)

    // Then
    assertEquals(title, todoResponse.title)
    assertEquals(description, todoResponse.description)
    assertEquals(completed, todoResponse.completed)
  }

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

    // Given
    val todoRequest = TodoRequest().apply {
      this.title = "Title Junit Test Insert"
      this.description = "Description Junit Test Insert"
      this.completed = true
    }

    // When
    val todoResponse = todoService.insertTodo(todoRequest)

    // Then
    assertEquals(todoRequest.title, todoResponse.title)
    assertEquals(todoRequest.description, todoResponse.description)
    assertEquals(todoRequest.completed, todoResponse.completed)
  }

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

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

    val todoRequest = TodoRequest().apply {
      this.id = insertId
      this.title = "Title Junit Test Update"
      this.description = "Description Junit Test Upate"
      this.completed = true
    }

    // When
    val todoResponse = todoService.updateTodo(todoRequest)

    // Then
    assertEquals(todoRequest.title, todoResponse.title)
    assertEquals(todoRequest.description, todoResponse.description)
    assertEquals(todoRequest.completed, todoResponse.completed)
  }

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

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

    // When
    val todoResponse = todoService.deleteTodoById(insertId)

    // Then
    assertNull(todoResponse)
  }

  fun insertTodo(
    title: String,
    description: String,
    completed: Boolean
  ): Long {

    var todoRequest = TodoRequest().apply {
      this.title = title
      this.description = description
      this.completed = completed
    }

    todoMapper.insertTodo(todoRequest)

    return todoRequest.id ?: 0
  }
}

3. 단위 테스트 확인
좌측에 초록색 버튼(Run Test) 클릭 및 클래스 또는 메소드 내에서 우클릭하여 Run 클릭하여 단위 테스트가 정상적으로 동작하는지 확인하세요. (단축키 : Ctrl + Shift + F10)

 

소스 코드는 Github Repository - https://github.com/tychejin1218/kotlin-springboot-rest-api.git (branch : section0) 를 참조하세요.

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