fix(test): embedded Redis 종료 누수를 방지한다

src/test/kotlin/kr/co/vividnext/sodalive/support/EmbeddedRedisInitializer.kt

@@ -18,9 +18,7 @@ class EmbeddedRedisInitializer : ApplicationContextInitializer<ConfigurableAppli
 }
 
 private object EmbeddedRedisHolder {
-    private var redisServer: RedisServer? = null
     private var port: Int? = null
-    private var shutdownHookRegistered = false
 
     @Synchronized
     fun start(): Int {
@@ -29,8 +27,9 @@ private object EmbeddedRedisHolder {
         }
 
         val selectedPort = PortProvider.newEphemeralPortProvider().get()
-        redisServer = RedisServer.newRedisServer()
+        RedisServer.newRedisServer()
             .port(selectedPort)
+            .onShutdownForceStop(true)
             .setting("bind 127.0.0.1")
             .setting("daemonize no")
             .setting("appendonly no")
@@ -38,22 +37,6 @@ private object EmbeddedRedisHolder {
             .also { it.start() }
         port = selectedPort
 
-        if (!shutdownHookRegistered) {
-            Runtime.getRuntime().addShutdownHook(
-                Thread {
-                    stop()
-                }
-            )
-            shutdownHookRegistered = true
-        }
-
         return selectedPort
     }
-
-    @Synchronized
-    fun stop() {
-        redisServer?.stop()
-        redisServer = null
-        port = null
-    }
 }