fix: 답변 기능 수정 (#128)

* fix: 답변 조회 수정

* test: 답변 조회 테스트 수정

Author: rjswjddn

src/main/java/com/oronaminc/join/answer/service/AnswerReader.java

@@ -1,16 +1,19 @@
 package com.oronaminc.join.answer.service;
 
-import com.oronaminc.join.answer.dao.AnswerRepository;
-import com.oronaminc.join.answer.domain.Answer;
-import com.oronaminc.join.global.exception.ErrorCode;
-import com.oronaminc.join.global.exception.ErrorException;
 import java.time.LocalDateTime;
 import java.util.List;
 import java.util.Optional;
-import lombok.RequiredArgsConstructor;
+
 import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Component;
 
+import com.oronaminc.join.answer.dao.AnswerRepository;
+import com.oronaminc.join.answer.domain.Answer;
+import com.oronaminc.join.global.exception.ErrorCode;
+import com.oronaminc.join.global.exception.ErrorException;
+
+import lombok.RequiredArgsConstructor;
+
 @Component
 @RequiredArgsConstructor
 public class AnswerReader {
@@ -31,11 +34,6 @@ public List<Answer> getAnswerByQuestionIdWithCursor(Long questionId,
             pageable);
     }
 
-    public Answer getByQuestionId(Long questionId) {
-        return answerRepository.findByQuestionId(questionId)
-            .orElseThrow(() -> new ErrorException(ErrorCode.NOT_FOUND_EXIST_ANSWER));
-    }
-
     public Answer getById(Long answerId) {
         return findById(answerId)
             .orElseThrow(() -> new ErrorException(ErrorCode.NOT_FOUND_ANSWER));

src/main/java/com/oronaminc/join/answer/service/AnswerService.java

@@ -1,5 +1,14 @@
 package com.oronaminc.join.answer.service;
 
+import java.time.LocalDateTime;
+import java.util.List;
+import java.util.Set;
+
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.Slice;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
 import com.oronaminc.join.answer.dao.AnswerRepository;
 import com.oronaminc.join.answer.domain.Answer;
@@ -16,15 +25,8 @@
 import com.oronaminc.join.question.service.QuestionReader;
 import com.oronaminc.join.room.domain.Room;
 import com.oronaminc.join.room.service.RoomReader;
-import java.time.LocalDateTime;
-import java.util.List;
-import java.util.Set;
+
 import lombok.RequiredArgsConstructor;
-import org.springframework.data.domain.PageRequest;
-import org.springframework.data.domain.Pageable;
-import org.springframework.data.domain.Slice;
-import org.springframework.stereotype.Service;
-import org.springframework.transaction.annotation.Transactional;
 
 @Service
 @Transactional(readOnly = true)
@@ -65,7 +67,6 @@ public Slice<AnswerGetResponse> getAnswers(
         memberReader.getById(memberId);
         roomReader.getById(roomId);
         questionReader.getByIdAndRoomId(questionId, roomId);
-        answerReader.getByQuestionId(questionId);
 
         Pageable pageable = PageRequest.of(0, size + 1);
 

src/test/java/com/oronaminc/join/answer/service/AnswerServiceTests.java

@@ -152,7 +152,6 @@ void getAnswers_firstPage_success() {
         given(memberReader.getById(1L)).willReturn(mockMember);
         given(roomReader.getById(1L)).willReturn(mockRoom);
         given(questionReader.getByIdAndRoomId(1L, 1L)).willReturn(mockQuestion);
-        given(answerReader.getByQuestionId(1L)).willReturn(null);
         given(answerReader.getFirstPageByQuestionId(eq(1L), any())).willReturn(answers);
         given(emojiReader.findTargetIdsByMemberAndTargetTypeInBatch(1L, TargetType.ANSWER,
             List.of(100L, 99L)))
@@ -174,7 +173,6 @@ void getAnswers_cursorPaging_success() {
         given(memberReader.getById(1L)).willReturn(mockMember);
         given(roomReader.getById(1L)).willReturn(mockRoom);
         given(questionReader.getByIdAndRoomId(1L, 1L)).willReturn(mockQuestion);
-        given(answerReader.getByQuestionId(1L)).willReturn(null);
         given(answerReader.getAnswerByQuestionIdWithCursor(eq(1L), any(), any(), any())).willReturn(
             answers);
         given(emojiReader.findTargetIdsByMemberAndTargetTypeInBatch(1L, TargetType.ANSWER,
@@ -198,7 +196,6 @@ void getAnswers_containsEmojiedAnswers() {
         given(memberReader.getById(1L)).willReturn(mockMember);
         given(roomReader.getById(1L)).willReturn(mockRoom);
         given(questionReader.getByIdAndRoomId(1L, 1L)).willReturn(mockQuestion);
-        given(answerReader.getByQuestionId(1L)).willReturn(null);
         given(answerReader.getFirstPageByQuestionId(eq(1L), any())).willReturn(answers);
         given(emojiReader.findTargetIdsByMemberAndTargetTypeInBatch(1L, TargetType.ANSWER,
             List.of(1L, 2L)))
@@ -220,7 +217,6 @@ void getAnswers_emptyList_noError() {
         given(memberReader.getById(1L)).willReturn(mockMember);
         given(roomReader.getById(1L)).willReturn(mockRoom);
         given(questionReader.getByIdAndRoomId(1L, 1L)).willReturn(mockQuestion);
-        given(answerReader.getByQuestionId(1L)).willReturn(null);
         given(answerReader.getFirstPageByQuestionId(eq(1L), any())).willReturn(List.of());
 
         // when