[Spring Boot] JPA 게시판 만들기(2) - API 테스트 코드 구현

@SpringBootTest와 TestRestTemplate를 사용하여 게시글을 조회, 등록, 수정, 삭제하는 API 테스트하는 코드를 구현하겠습니다.

BoardControllerTest.java

package com.rest.api.board.controller;
 
import static org.assertj.core.api.Assertions.assertThat;
 
import java.util.List;
 
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.web.client.TestRestTemplate;
import org.springframework.boot.web.server.LocalServerPort;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.test.context.junit4.SpringRunner;
 
import com.rest.api.board.domain.Board;
import com.rest.api.board.dto.BoardSaveRequestDto;
import com.rest.api.board.dto.BoardUpdateRequestDto;
import com.rest.api.board.repository.BoardRepository;
 
@RunWith(SpringRunner.class)
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
public class BoardControllerTest {
 
    @LocalServerPort
    private int port;
 
    @Autowired
    private TestRestTemplate restTemplate;
 
    @Autowired
    private BoardRepository boardRepository;
 
    @Test
    public void findAll() throws Exception {
 
        String url = "http://localhost:" + port + "/api/v1/board";
 
        ResponseEntity<String> responseEntity = restTemplate.getForEntity(url, String.class);
 
        assertThat(responseEntity.getStatusCode()).isEqualTo(HttpStatus.OK);
        assertThat(responseEntity.getBody()).contains("boardSeq");
        assertThat(responseEntity.getBody()).contains("boardSubject");
        assertThat(responseEntity.getBody()).contains("boardWriter");
        assertThat(responseEntity.getBody()).contains("boardContent");
    }
 
    @Test
    public void findById() throws Exception {
 
        Long boardSeq = 1L;
 
        String url = "http://localhost:" + port + "/api/v1/board/" + boardSeq;
 
        ResponseEntity<String> responseEntity = restTemplate.getForEntity(url, String.class);
 
        assertThat(responseEntity.getStatusCode()).isEqualTo(HttpStatus.OK);
        assertThat(responseEntity.getBody()).contains("boardSeq");
        assertThat(responseEntity.getBody()).contains("boardSubject");
        assertThat(responseEntity.getBody()).contains("boardWriter");
        assertThat(responseEntity.getBody()).contains("boardContent");
    }
 
    @Test
    public void save() throws Exception {
 
        String boardSubject = "게시글_제목_저장_01";
        String boardWriter = "게시글_작성자_저장_01";
        String boardContent = "게시글_내용_저장_01";
 
        BoardSaveRequestDto boardSaveRequestDto = BoardSaveRequestDto.builder()
                                                                     .boardSubject(boardSubject)
                                                                     .boardWriter(boardWriter)
                                                                     .boardContent(boardContent)
                                                                     .build();
 
        String url = "http://localhost:" + port + "/api/v1/board";
 
        ResponseEntity<Long> responseEntity = restTemplate.postForEntity(url, boardSaveRequestDto, Long.class);
 
        assertThat(responseEntity.getStatusCode()).isEqualTo(HttpStatus.CREATED);
        assertThat(responseEntity.getBody()).isGreaterThan(0L);
 
        List<Board> boardList = boardRepository.findAll();
        Board board = boardList.get(boardList.size() - 1);
        assertThat(board.getBoardSubject()).isEqualTo(boardSubject);
        assertThat(board.getBoardWriter()).isEqualTo(boardWriter);
        assertThat(board.getBoardContent()).isEqualTo(boardContent);
    }
 
    @Test
    public void update() throws Exception {
 
        String boardSubject = "게시글_제목_저장_01";
        String boardWriter = "게시글_작성자_저장_01";
        String boardContent = "게시글_내용_저장_01";
 
        Board saveBoard = boardRepository.save(Board.builder()
                                                    .boardSubject(boardSubject)
                                                    .boardWriter(boardWriter)
                                                    .boardContent(boardContent)
                                                    .build());
 
        Long boardSeq = saveBoard.getBoardSeq();
        String updatedBoardSubject = "게시글_제목_수정_01";
        String updatedBoardContent = "게시글_내용_수정_01";
 
        BoardUpdateRequestDto boardUpdateRequestDto = BoardUpdateRequestDto.builder()
                                                                           .boardSubject(updatedBoardSubject)
                                                                           .boardContent(updatedBoardContent)
                                                                           .build();
 
        String url = "http://localhost:" + port + "/api/v1/board/" + boardSeq;
 
        HttpEntity<BoardUpdateRequestDto> requestEntity = new HttpEntity<>(boardUpdateRequestDto);
 
        ResponseEntity<Long> responseEntity = restTemplate.exchange(url, HttpMethod.PUT, requestEntity, Long.class);
 
        assertThat(responseEntity.getStatusCode()).isEqualTo(HttpStatus.CREATED);
        assertThat(responseEntity.getBody()).isGreaterThan(0L);
 
        List<Board> boardList = boardRepository.findAll();
        Board board = boardList.get(boardList.size() - 1);
        assertThat(board.getBoardSubject()).isEqualTo(updatedBoardSubject);
        assertThat(board.getBoardContent()).isEqualTo(updatedBoardContent);
    }
 
    @Test
    public void delete() throws Exception {
 
        String boardSubject = "게시글_제목_저장_01";
        String boardWriter = "게시글_작성자_저장_01";
        String boardContent = "게시글_내용_저장_01";
 
        Board saveBoard = boardRepository.save(Board.builder()
                                                    .boardSubject(boardSubject)
                                                    .boardWriter(boardWriter)
                                                    .boardContent(boardContent)
                                                    .build());
 
        Long boardSeq = saveBoard.getBoardSeq();
 
        String url = "http://localhost:" + port + "/api/v1/board/" + boardSeq;
 
        HttpHeaders httpHeaders = new HttpHeaders();
        HttpEntity<String> httpEntity = new HttpEntity<String>(httpHeaders);
 
        ResponseEntity<Long> responseEntity = restTemplate.exchange(url, HttpMethod.DELETE, httpEntity, Long.class);
 
        assertThat(responseEntity.getStatusCode()).isEqualTo(HttpStatus.NO_CONTENT);
    }
}

Github Repository - https://github.com/tychejin1218/jpa-sample