From 5afa03b24bf511b0831c811330daf104db6bd07f Mon Sep 17 00:00:00 2001
From: kimdohyung <pdohyung@gmail.com>
Date: Thu, 30 May 2024 22:14:38 +0900
Subject: [PATCH] =?UTF-8?q?refactor:=20=EA=B2=8C=EC=8A=A4=ED=8A=B8?=
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---
 .../application/rating/RatingService.java         |  4 ++--
 .../application/rating/RatingServiceTest.java     | 15 +++++++++++++++
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/src/main/java/com/jisungin/application/rating/RatingService.java b/src/main/java/com/jisungin/application/rating/RatingService.java
index 56d01bd..95bf632 100644
--- a/src/main/java/com/jisungin/application/rating/RatingService.java
+++ b/src/main/java/com/jisungin/application/rating/RatingService.java
@@ -48,7 +48,7 @@ public RatingCreateResponse creatingRating(Long userId, RatingCreateServiceReque
 
     public RatingGetOneResponse getRating(Long userId, String isbn) {
         User user = userRepository.findById(userId)
-                .orElseThrow(() -> new BusinessException(ErrorCode.USER_NOT_FOUND));
+                .orElse(null);
 
         Book book = bookRepository.findById(isbn)
                 .orElseThrow(() -> new BusinessException(ErrorCode.BOOK_NOT_FOUND));
@@ -56,7 +56,7 @@ public RatingGetOneResponse getRating(Long userId, String isbn) {
         Rating rating = ratingRepository.findRatingByUserAndBook(user, book)
                 .orElse(null);
 
-        if (rating == null) {
+        if (rating == null || user == null) {
             return RatingGetOneResponse.of(null, null, book.getIsbn());
         }
 
diff --git a/src/test/java/com/jisungin/application/rating/RatingServiceTest.java b/src/test/java/com/jisungin/application/rating/RatingServiceTest.java
index d8c5d98..1b0cb5a 100644
--- a/src/test/java/com/jisungin/application/rating/RatingServiceTest.java
+++ b/src/test/java/com/jisungin/application/rating/RatingServiceTest.java
@@ -118,6 +118,21 @@ void getRatingWithEmpty() {
         assertThat(result.getIsbn()).isEqualTo(book.getIsbn());
     }
 
+    @DisplayName("게스트가 책의 별점을 조회한다.")
+    @Test
+    void getRatingWithGuest() {
+        //given
+        Book book = bookRepository.save(createBook("제목1", "내용1", "1234"));
+
+        //when
+        RatingGetOneResponse result = ratingService.getRating(-1L, book.getIsbn());
+
+        //then
+        assertThat(result.getId()).isNull();
+        assertThat(result.getRating()).isNull();
+        assertThat(result.getIsbn()).isEqualTo(book.getIsbn());
+    }
+
     @DisplayName("유저가 별점을 수정한다.")
     @Test
     void updateRating() {