test code error - java.lang.NullPointerException: Cannot invoke "org.springframework.test.web.servlet.MockMvc.perform(org.springframework.test.web.servlet.RequestBuilder

오류 내용

java.lang.NullPointerException: Cannot invoke "org.springframework.test.web.servlet.MockMvc.perform(org.springframework.test.web.servlet.RequestBuilder)" because "this.mockMvc" is null

 

소스

package kr.pe.acet.acetrestapi.index;

import kr.pe.acet.acetrestapi.common.RestDocsConfiguration;
import org.junit.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.restdocs.AutoConfigureRestDocs;
import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.context.annotation.Import;
import org.springframework.test.context.ActiveProfiles;
import org.springframework.test.context.junit.jupiter.SpringExtension;
import org.springframework.test.web.servlet.MockMvc;

import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;


@ExtendWith(SpringExtension.class)
@SpringBootTest
@AutoConfigureMockMvc
@AutoConfigureRestDocs
@Import(RestDocsConfiguration.class)
@ActiveProfiles("test")
public class indexControllerTest {

    @Autowired
    private MockMvc mockMvc;

    @Test
    public void index() throws Exception {
        mockMvc.perform(get("/api"))
                .andExpect(status().isOk())
                .andExpect(jsonPath("_links.events").exists());
    }
}

뭐가 문제일까? 소스를 보다가...아래의 test import를 발견!!!!
저번에도 한번 꼬였던 기억이 나서 해결하였다.

import org.junit.Test;

 

해결방법

Junit5를 사용하고 있으므로 아래처럼 jupiter 어쩌구로 import 해줘야 한다. 

수정 후 다시 테스트를 돌려주면 아래와 같이 테스트가 통과 한다!!

테스트 통과!!

 

끝~