From 7e54779ea8f2bb0ffaac54302289f5415b2c8fba Mon Sep 17 00:00:00 2001
From: Lim Jonguk <minuk926@gmail.com>
Date: Tue, 15 Mar 2022 15:22:19 +0900
Subject: [PATCH] feat: @Test log util add

---
 src/main/java/com/xit/core/util/LogUtil.java | 33 ++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/src/main/java/com/xit/core/util/LogUtil.java b/src/main/java/com/xit/core/util/LogUtil.java
index e6d9299..98af515 100644
--- a/src/main/java/com/xit/core/util/LogUtil.java
+++ b/src/main/java/com/xit/core/util/LogUtil.java
@@ -1,5 +1,10 @@
 package com.xit.core.util;
 
+import ch.qos.logback.classic.Logger;
+import ch.qos.logback.classic.spi.ILoggingEvent;
+import ch.qos.logback.core.read.ListAppender;
+import org.slf4j.LoggerFactory;
+
 /**
  * Log Util Class
  */
@@ -28,4 +33,32 @@ public class LogUtil {
 		StackTraceElement[] stacks	= throwable.getStackTrace();
 		return stacks[0].getClassName() + "." + stacks[0].getMethodName();
 	}
+
+	/**
+	 * <pre>
+	 * 발생하는 Log 이벤트를 List에 저장하여 나중에 조회 가능하도록 해주는 클래스
+	 *
+	 * ListAppender<ILoggingEvent> listAppender = LoggerTestUtil.getListAppenderForClass(SomeService.class);
+	 *
+	 * someService.requestJobId(jobId); //메서드 실행
+	 *
+	 * List<ILoggingEvent> logsList = listAppender.list; //저장한 데이터를 가져온다
+	 * log.info("전체 logsList : {}", new ObjectMapper().writerWithDefaultPrettyPrinter() //JSON 포멧을 pretty하게 정렬한다
+	 * 	 .writeValueAsString(logsList));
+	 *  assertThat(logsList.get(0).getMessage()).contains("[servicedebug] error occurred : jobId : ");
+	 * </pre>
+	 * @Test 에서 사
+	 * @param clazz
+	 * @return ListAppender
+	 */
+	public static ListAppender<ILoggingEvent> getListAppenderForClass(Class clazz) {
+		Logger logger = (Logger) LoggerFactory.getLogger(clazz);
+
+		ListAppender<ILoggingEvent> listAppender = new ListAppender<>();
+		listAppender.start(); //기록을 시작한다
+
+		logger.addAppender(listAppender); //로거에 ListAppender를 추가하여 발생하는 로그를 List에 저장하도록 한다
+
+		return listAppender;
+	}
 }