[feat] 테스트 코드 구현

src/test/java/com/bbteam/budgetbuddies/domain/favoritehashtag/service/FavoriteHashtagServiceTest.java

@@ -0,0 +1,100 @@
+package com.bbteam.budgetbuddies.domain.favoritehashtag.service;
+
+import com.bbteam.budgetbuddies.domain.connectedinfo.entity.ConnectedInfo;
+import com.bbteam.budgetbuddies.domain.connectedinfo.repository.ConnectedInfoRepository;
+import com.bbteam.budgetbuddies.domain.discountinfo.entity.DiscountInfo;
+import com.bbteam.budgetbuddies.domain.discountinfo.repository.DiscountInfoRepository;
+import com.bbteam.budgetbuddies.domain.favoritehashtag.dto.FavoriteHashtagResponseDto;
+import com.bbteam.budgetbuddies.domain.favoritehashtag.entity.FavoriteHashtag;
+import com.bbteam.budgetbuddies.domain.favoritehashtag.repository.FavoriteHashtagRepository;
+import com.bbteam.budgetbuddies.domain.hashtag.entity.Hashtag;
+import com.bbteam.budgetbuddies.domain.hashtag.repository.HashtagRepository;
+import com.bbteam.budgetbuddies.domain.user.entity.User;
+import com.bbteam.budgetbuddies.domain.user.repository.UserRepository;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.ActiveProfiles;
+
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@SpringBootTest
+@ActiveProfiles("test")
+public class FavoriteHashtagServiceTest {
+
+    @Autowired
+    private FavoriteHashtagRepository favoriteHashtagRepository;
+
+    @Autowired
+    private UserRepository userRepository;
+
+    @Autowired
+    private HashtagRepository hashtagRepository;
+
+    @Autowired
+    private FavoriteHashtagService favoriteHashtagService;
+
+    @Autowired
+    private ConnectedInfoRepository connectedInfoRepository;
+
+    @Autowired
+    private DiscountInfoRepository discountInfoRepository;
+
+    private User user;
+    private Hashtag hashtag;
+    private DiscountInfo discountInfo;
+
+    @BeforeEach
+    void setUp() {
+        // 데이터 초기화
+        connectedInfoRepository.deleteAll();
+        favoriteHashtagRepository.deleteAll();
+        discountInfoRepository.deleteAll();
+        hashtagRepository.deleteAll();
+        userRepository.deleteAll();
+
+        // Given: 사용자와 해시태그, 할인정보를 생성
+        user = userRepository.save(User.builder()
+                .phoneNumber("01012345678")
+                .name("Test User")
+                .age(25)
+                .email("test1@example.com")
+                .build());
+
+        hashtag = hashtagRepository.save(new Hashtag("식비"));
+        discountInfo = discountInfoRepository.save(DiscountInfo.withId(1L));
+
+        favoriteHashtagRepository.save(FavoriteHashtag.builder().user(user).hashtag(hashtag).build());
+
+        connectedInfoRepository.save(ConnectedInfo.builder()
+                .discountInfo(discountInfo)
+                .hashtag(hashtag)
+                .build());
+    }
+
+    @Test
+    void testSaveFavoriteHashtags() {
+        // When: 사용자가 관심 있는 해시태그를 선택하여 저장함
+        FavoriteHashtag favorite1 = FavoriteHashtag.builder().user(user).hashtag(hashtag).build();
+        favoriteHashtagRepository.save(favorite1);
+
+        // Then: FavoriteHashtag에 잘 저장되었는지 검증
+        List<FavoriteHashtag> favorites = favoriteHashtagRepository.findByUser(user);
+        assertThat(favorites).hasSize(1);
+        assertThat(favorites).extracting(fav -> fav.getHashtag().getName())
+                .containsExactly("식비");
+    }
+
+    @Test
+    void testFindUsersByHashtagForDiscountInfo() {
+        // When: 할인정보에 연결된 해시태그를 기반으로 사용자를 조회
+        List<FavoriteHashtagResponseDto> userResponses = favoriteHashtagService.findUsersByHashtag(discountInfo.getId(), hashtag.getId());
+
+        // Then: 해당 해시태그를 가진 유저가 응답되는지 확인
+        assertThat(userResponses).hasSize(1);
+        assertThat(userResponses.get(0).getUserId()).isEqualTo(user.getId());
+    }
+}