Feat: 학과 리스트 반환 api 작성

 - controller, repository 단위 테스트 작성
 - major.java 디렉토리 변경(member -> major)
Resolves: GDSC-PKNU-Official#10

.gitignore

@@ -36,3 +36,4 @@ out/
 ### VS Code ###
 .vscode/
 src/main/resources/application.properties
+src/main/resources/application.yml

src/main/java/com/gdsc/pknu/backend/controller/user/MajorListResult.java

@@ -0,0 +1,15 @@
+package com.gdsc.pknu.backend.controller.user;
+
+import java.util.List;
+import com.gdsc.pknu.backend.domain.major.Major;
+import lombok.Getter;
+
+@Getter
+public class MajorListResult {
+
+    private List<Major> majorList;
+
+    public MajorListResult(List<Major> majorList) {
+        this.majorList = majorList;
+    }
+}

src/main/java/com/gdsc/pknu/backend/controller/user/MajorRestController.java

@@ -0,0 +1,26 @@
+package com.gdsc.pknu.backend.controller.user;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import com.gdsc.pknu.backend.controller.ApiRes;
+import com.gdsc.pknu.backend.service.MajorService;
+
+
+@RestController
+@RequestMapping("api/major")
+public class MajorRestController {
+
+    @Autowired
+    private final MajorService majorService;
+
+    public MajorRestController(MajorService majorService) {
+        this.majorService = majorService;
+    }
+
+    @GetMapping()
+    public ApiRes<MajorListResult> getMajorList() {
+        return ApiRes.SUCCESS(new MajorListResult(majorService.getMajorList()));
+    }
+}

src/main/java/com/gdsc/pknu/backend/domain/member/Major.java → src/main/java/com/gdsc/pknu/backend/domain/major/Major.java

@@ -1,17 +1,24 @@
-package com.gdsc.pknu.backend.domain.member;
-
+package com.gdsc.pknu.backend.domain.major;
 
 import javax.persistence.Column;
 import javax.persistence.Entity;
 import javax.persistence.GeneratedValue;
 import javax.persistence.Id;
 
+import lombok.AllArgsConstructor;
+import lombok.*;
+import lombok.NoArgsConstructor;
+
 @Entity
+@Getter
+@Builder
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@AllArgsConstructor
+
 public class Major {
     @Id
     @GeneratedValue
     @Column(name = "major_id")
     private Long id;
-
     private String majorName;
 }

src/main/java/com/gdsc/pknu/backend/domain/major/MajorRepository.java

@@ -0,0 +1,8 @@
+package com.gdsc.pknu.backend.domain.major;
+
+import java.util.List;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface MajorRepository extends JpaRepository<Major, Long> {
+    List<Major> findAll();
+} 

src/main/java/com/gdsc/pknu/backend/service/MajorService.java

@@ -0,0 +1,22 @@
+package com.gdsc.pknu.backend.service;
+
+import java.util.List;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import com.gdsc.pknu.backend.domain.major.Major;
+import com.gdsc.pknu.backend.domain.major.MajorRepository;
+
+@Service
+public class MajorService {
+
+    @Autowired
+    private final MajorRepository majorRepository;
+
+    public MajorService(MajorRepository majorRepository) {
+        this.majorRepository = majorRepository;
+    }
+
+    public List<Major> getMajorList() {
+        return majorRepository.findAll();
+    }
+}

src/test/java/com/gdsc/pknu/backend/controller/MajorRestControllerTest.java

@@ -0,0 +1,47 @@
+package com.gdsc.pknu.backend.controller;
+
+import java.util.ArrayList;
+import java.util.List;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
+import org.springframework.boot.test.mock.mockito.MockBean;
+import org.springframework.test.web.servlet.MockMvc;
+import com.gdsc.pknu.backend.controller.user.MajorRestController;
+import com.gdsc.pknu.backend.domain.major.Major;
+import com.gdsc.pknu.backend.service.MajorService;
+import static org.mockito.Mockito.*;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;
+
+@WebMvcTest(MajorRestController.class)
+public class MajorRestControllerTest {
+
+    @Autowired
+    MockMvc mockMvc;
+
+    @MockBean
+    MajorService majorService;
+
+    @Test
+    @DisplayName("학과 목록 불러오기 테스트")
+    void get_major_list() throws Exception {
+
+        // 서비스 리턴 값 지정
+        List<Major> majors = new ArrayList<>();
+        majors.add(Major.builder()
+                        .id(1L)
+                        .majorName("기린공학과").build());
+        majors.add(Major.builder()
+                        .id(2L)
+                        .majorName("향유고래어학과").build());
+
+        when(majorService.getMajorList()).thenReturn(majors);
+
+        mockMvc.perform(get("/api/major"))
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$.response.majorList[1].majorName").value("향유고래어학과"));
+    }
+
+}

src/test/java/com/gdsc/pknu/backend/domain/major/MajorRepositoryTest.java

@@ -0,0 +1,28 @@
+package com.gdsc.pknu.backend.domain.major;
+
+import java.util.List;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.jdbc.AutoConfigureTestDatabase;
+import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
+
+@DataJpaTest
+@AutoConfigureTestDatabase(replace = AutoConfigureTestDatabase.Replace.NONE)
+class MajorRepositoryTest{
+
+    @Autowired
+    private MajorRepository majorRepository;
+
+    @Test
+    @DisplayName("학과 정보 리스트 불러오기")
+    void get_major_list(){
+        // given
+
+        // when
+           List<Major> majors = majorRepository.findAll();
+        // then
+            assert(majors.size() == 79);
+            assert(majors.get(78).getMajorName().equals("공공안전경찰학과"));
+    }
+}