fix: 기존 테스트 실패 수정

- LikeServiceIntegrationTest: LikeFacade를 통해 멱등성 보장
- DlqPublisherTest: RedisTestContainersConfig 추가
- commerce-streamer CacheConfig 추가 (RedisTemplate<String, Object>)

Author: sylee6529

apps/commerce-api/src/test/java/com/loopers/domain/like/LikeServiceIntegrationTest.java

@@ -1,5 +1,6 @@
 package com.loopers.domain.like;
 
+import com.loopers.application.like.LikeFacade;
 import com.loopers.domain.common.vo.Money;
 import com.loopers.domain.like.repository.LikeRepository;
 import com.loopers.domain.like.service.LikeService;
@@ -23,6 +24,9 @@ class LikeServiceIntegrationTest {
     @Autowired
     private LikeService likeService;
 
+    @Autowired
+    private LikeFacade likeFacade;
+
     @Autowired
     private LikeRepository likeRepository;
 
@@ -76,10 +80,10 @@ void duplicateLike() {
             Member member = memberRepository.save(createMember("user1", "u1@mail.com"));
             Product product = productRepository.save(createProduct(1L, "상품A", 1000L, 10));
 
-            likeService.like(member.getId(), product.getId());
+            likeFacade.likeProduct(member.getId(), product.getId());
 
             // when
-            likeService.like(member.getId(), product.getId()); // 중복 호출
+            likeFacade.likeProduct(member.getId(), product.getId()); // 중복 호출 - Facade에서 멱등성 보장
 
             // then
             long likeCount = likeRepository.countByProductId(product.getId());

apps/commerce-streamer/src/main/java/com/loopers/infrastructure/cache/CacheConfig.java

@@ -0,0 +1,37 @@
+package com.loopers.infrastructure.cache;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
+import org.springframework.data.redis.serializer.StringRedisSerializer;
+
+@Configuration
+public class CacheConfig {
+
+    @Bean
+    public RedisTemplate<String, Object> cacheRedisTemplate(LettuceConnectionFactory connectionFactory) {
+        RedisTemplate<String, Object> template = new RedisTemplate<>();
+        template.setConnectionFactory(connectionFactory);
+
+        // Key serializer
+        template.setKeySerializer(new StringRedisSerializer());
+        template.setHashKeySerializer(new StringRedisSerializer());
+
+        // Value serializer - JSON
+        ObjectMapper objectMapper = new ObjectMapper();
+        objectMapper.registerModule(new JavaTimeModule());
+        objectMapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
+
+        GenericJackson2JsonRedisSerializer jsonSerializer = new GenericJackson2JsonRedisSerializer(objectMapper);
+        template.setValueSerializer(jsonSerializer);
+        template.setHashValueSerializer(jsonSerializer);
+
+        template.afterPropertiesSet();
+        return template;
+    }
+}

apps/commerce-streamer/src/test/java/com/loopers/infrastructure/kafka/DlqPublisherTest.java

@@ -3,11 +3,13 @@
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.loopers.domain.dlq.DlqMessage;
 import com.loopers.infrastructure.persistence.DlqMessageRepository;
+import com.loopers.testcontainers.RedisTestContainersConfig;
 import org.apache.kafka.clients.consumer.ConsumerRecord;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.context.annotation.Import;
 import org.springframework.test.context.ActiveProfiles;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -18,6 +20,7 @@
  */
 @SpringBootTest
 @ActiveProfiles("test")
+@Import(RedisTestContainersConfig.class)
 @Transactional
 class DlqPublisherTest {