[Spring JUnit] SpringBoot에서 Controller 테스트를 위한 JUnit 구조

 

import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;

import java.util.HashMap;
import java.util.Map;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.MvcResult;
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.filter.CharacterEncodingFilter;

import com.fasterxml.jackson.databind.ObjectMapper;

@AutoConfigureMockMvc
@SpringBootTest
class ControllerTest {
	@Autowired
	private MockMvc mvc;

    @Autowired
    public ObjectMapper objectMapper;
    
    @Autowired
    public WebApplicationContext context;

    public HttpHeaders headers;

	@BeforeEach
	public void setup() {
		this.mvc = MockMvcBuilders.webAppContextSetup(context)
                .addFilters(new CharacterEncodingFilter("UTF-8", true))
				.alwaysDo(print()).build();
		this.headers = new HttpHeaders();
	}

	@Test
	void testFindAll() throws Exception {
		Map<String, Object> params = new HashMap<>();
        params.put("", "");

        String requestJsonString = objectMapper.writeValueAsString(params);
        
		MvcResult result = mvc.perform(MockMvcRequestBuilders.get("/api/path")
                .headers(headers)
                .content(requestJsonString)
                .contentType(MediaType.APPLICATION_JSON)
                .accept(MediaType.APPLICATION_JSON))
                .andExpect(MockMvcResultMatchers.status().isOk())
                .andExpect(MockMvcResultMatchers.content().contentType(MediaType.APPLICATION_JSON))
                .andDo(print())
                .andReturn();
	}

}