[chore] build 디렉토리 ignore 및 테스트 추가

.gitignore

@@ -6,3 +6,4 @@
 .Ds_store
 /redis
 .gradle
+**/build/

spring-chatting-backend-server/build.gradle

@@ -2,12 +2,30 @@ plugins {
 	id 'java'
 	id 'org.springframework.boot' version '3.0.5'
 	id 'io.spring.dependency-management' version '1.1.0'
+	id 'jacoco'
+}
+
+jacoco {
+	toolVersion = "0.8.8"
 }
 
 ext {
 	set('springCloudVersion', "2022.0.1")
 }
 
+jacocoTestReport {
+	dependsOn test // 리포트 생성을 위해서는 test가 먼저 완료되어야 함
+	reports {
+		xml.enabled false
+		html.enabled true
+	}
+}
+
+tasks.named('test') {
+	useJUnitPlatform()
+	finalizedBy jacocoTestReport // 테스트 종료후 항상 리포트 생성
+}
+
 group = 'chattingBackend'
 version = project.rootProject.ext.projectVersion
 sourceCompatibility = '17'
@@ -85,10 +103,6 @@ dependencies {
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
 }
 
-tasks.named('test') {
-	useJUnitPlatform()
-}
-
 // find the latest jar file in the build/libs directory
 def findLatestJar() {
 	def jarDir = file("${project.buildDir}/libs")

spring-chatting-backend-server/src/test/java/chatting/chat/domain/participant/api/ParticipantControllerTest.java

@@ -9,8 +9,10 @@
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
 
+import chatting.chat.domain.participant.dto.ParticipantDto;
 import chatting.chat.domain.participant.service.ParticipantServiceImpl;
 import chatting.chat.domain.user.api.UserController;
+import chatting.chat.domain.user.dto.UserDto;
 import chatting.chat.domain.user.entity.User;
 import chatting.chat.domain.user.service.UserService;
 import chatting.chat.web.error.GlobalExceptionHandler;
@@ -19,6 +21,8 @@
 import chatting.chat.web.sessionCluster.redis.UserRedisSessionRepository;
 import com.example.commondto.error.CustomException;
 import jakarta.servlet.http.Cookie;
+import java.time.LocalDate;
+import java.util.Arrays;
 import java.util.Optional;
 import lombok.extern.slf4j.Slf4j;
 import org.junit.jupiter.api.BeforeEach;
@@ -79,7 +83,7 @@ void whenValidParticipantAdd_thenSuccessShouldBeReturned() throws Exception {
 
     @Test
     @DisplayName("채팅방이 존재하지 않을 때 참여 시 에러 반환")
-    void addParticipant() throws Exception {
+    void whenRoomNotValid_then404ShouldBeReturned() throws Exception {
         // given
         String refreshToken = "validToken";
         String userId = "userId";
@@ -93,10 +97,25 @@ void addParticipant() throws Exception {
     }
 
     @Test
-    void getParticipants() {
-    }
+    @DisplayName("내가 참여중인 채팅방 목록 조회 시 참여중인 채팅방 목록 반환 성공")
+    void whenValidUserGetHisParticipantList_thenValidParticipantListShouldBeReturned()
+        throws Exception {
+        // given
+        String refreshToken = "validToken";
+        String userId = "userId";
+        ParticipantDto participantDto = ParticipantDto.builder().userDto(UserDto.builder().userId(userId).userName("userName").userStatus("").build())
+            .participantId(1L)
+            .createdAt(LocalDate.now())
+            .updatedAt(LocalDate.now())
+            .roomId(1L)
+            .roomName("roomName")
+            .build();
+        UserRedisSession userRedisSession = new UserRedisSession(userId, refreshToken);
+        when(userRedisSessionRepository.findById(refreshToken)).thenReturn(Optional.of(userRedisSession));
+        when(participantService.findAllByUserId(userId)).thenReturn(Arrays.asList(participantDto));
 
-    @Test
-    void getParticipant() {
+        // when + then
+        mockMvc.perform(get("/participant").cookie(new Cookie("refreshToken", refreshToken)))
+            .andExpect(status().isOk()).andExpect(jsonPath("$[0].userDto.userId", is(userId)));
     }
 }