✅ test: RedissonTestContainerConfig 추가

Author: LimKangHyun

backend/src/test/java/io/f1/backend/global/config/RedissonTestContainerConfig.java

@@ -0,0 +1,37 @@
+package io.f1.backend.global.config;
+
+import com.redis.testcontainers.RedisContainer;
+import org.redisson.Redisson;
+import org.redisson.api.RedissonClient;
+import org.redisson.config.Config;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.testcontainers.junit.jupiter.Container;
+import org.testcontainers.junit.jupiter.Testcontainers;
+
+@Configuration
+@Testcontainers
+public class RedissonTestContainerConfig {
+
+    @Container
+    public static RedisContainer redisContainer =
+        new RedisContainer(
+            RedisContainer.DEFAULT_IMAGE_NAME.withTag(RedisContainer.DEFAULT_TAG));
+
+    static {
+        redisContainer.start();
+    }
+
+    @Bean
+    public RedissonClient redissonClient() {
+        Config config = new Config();
+        String address = String.format("redis://%s:%d",
+            RedissonTestContainerConfig.redisContainer.getHost(),
+            RedissonTestContainerConfig.redisContainer.getFirstMappedPort());
+
+        config.useSingleServer()
+            .setAddress(address);
+
+        return Redisson.create(config);
+    }
+}