refactor: Survey 생성시 이미 존재하는 survey가 있다면 예외를 던진다.

survey/survey-application/src/main/java/me/nalab/survey/application/exception/DuplicateSurveyException.java

@@ -0,0 +1,8 @@
+package me.nalab.survey.application.exception;
+
+public class DuplicateSurveyException extends RuntimeException {
+
+    public DuplicateSurveyException(String message) {
+        super(message);
+    }
+}

survey/survey-application/src/main/java/me/nalab/survey/application/service/create/SurveyCreateService.java

@@ -1,30 +1,36 @@
 package me.nalab.survey.application.service.create;
 
-import org.springframework.stereotype.Service;
-import org.springframework.transaction.annotation.Transactional;
-
+import java.text.MessageFormat;
 import lombok.RequiredArgsConstructor;
 import me.nalab.core.idgenerator.idcore.IdGenerator;
 import me.nalab.survey.application.common.survey.dto.SurveyDto;
 import me.nalab.survey.application.common.survey.mapper.SurveyDtoMapper;
+import me.nalab.survey.application.exception.DuplicateSurveyException;
 import me.nalab.survey.application.exception.TargetDoesNotExistException;
 import me.nalab.survey.application.port.in.web.CreateSurveyUseCase;
 import me.nalab.survey.application.port.out.persistence.SurveyCreatePort;
 import me.nalab.survey.application.port.out.persistence.TargetExistCheckPort;
+import me.nalab.survey.application.port.out.persistence.existsurvey.SurveyExistPort;
 import me.nalab.survey.domain.survey.Survey;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
 @Service
 @RequiredArgsConstructor
 class SurveyCreateService implements CreateSurveyUseCase {
 
 	private final SurveyCreatePort surveyCreatePort;
+    private final SurveyExistPort surveyExistPort;
 	private final TargetExistCheckPort targetExistCheckPort;
 	private final IdGenerator idGenerator;
 
 	@Override
 	@Transactional
 	public void createSurvey(Long targetId, SurveyDto surveyDto) {
 		throwIfDoesNotExistTarget(targetId);
+        if (surveyExistPort.isSurveyExistByTargetId(targetId)) {
+            throw new DuplicateSurveyException(MessageFormat.format("이미 Survey를 등록한 Target \"{0}\" 입니다.", targetId));
+        }
 		Survey survey = SurveyDtoMapper.toSurvey(surveyDto);
 		survey.withId(idGenerator::generate);
 		surveyCreatePort.createSurvey(targetId, survey);

survey/survey-application/src/test/java/me/nalab/survey/application/service/create/SurveyCreateServiceTest.java

@@ -2,12 +2,15 @@
 
 import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
 import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.mockito.ArgumentMatchers.anyLong;
 import static org.mockito.Mockito.when;
 
 import java.util.ArrayList;
 import java.util.List;
 import java.util.stream.Stream;
 
+import me.nalab.survey.application.port.out.persistence.existsurvey.SurveyExistPort;
+import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
@@ -43,6 +46,15 @@ class SurveyCreateServiceTest {
 	@MockBean
 	private TargetExistCheckPort findTargetPort;
 
+	@MockBean
+	private SurveyExistPort surveyExistPort;
+
+	@BeforeEach
+	void mockingSurveyExistPort() {
+		when(surveyExistPort.isSurveyExistByTargetId(anyLong())).thenReturn(false);
+	}
+
+
 	@ParameterizedTest
 	@MethodSource("surveyDtoLargeNullIdSources")
 	void CREATE_NEW_SURVEY_SUCCESS(SurveyDto surveyDto) {