fix tester bug

CHANGELOG.md

@@ -10,6 +10,7 @@
 
 ### 🐞Bug修复
 * 【db     】     修复Oracle下别名错误造成的SQL语法啊错误（issue#I3VTQW@Gitee）
+* 【core   】     修复ConcurrencyTester重复使用时开始测试未清空之前任务的问题（issue#I3VSDO@Gitee）
 
 -------------------------------------------------------------------------------------------------------------
 

hutool-core/src/main/java/cn/hutool/core/thread/ConcurrencyTester.java

@@ -37,6 +37,8 @@ public class ConcurrencyTester {
 	 * @return this
 	 */
 	public ConcurrencyTester test(Runnable runnable) {
+		this.sf.clearWorker();
+
 		timeInterval.start();
 		this.sf//
 				.addRepeatWorker(runnable)//
@@ -47,6 +49,23 @@ public class ConcurrencyTester {
 		return this;
 	}
 
+	/**
+	 * 重置测试器，重置包括：
+	 *
+	 * <ul>
+	 *     <li>清空worker</li>
+	 *     <li>重置计时器</li>
+	 * </ul>
+	 *
+	 * @return this
+	 * @since 5.7.2
+	 */
+	public ConcurrencyTester reset(){
+		this.sf.clearWorker();
+		this.timeInterval.restart();
+		return this;
+	}
+
 	/**
 	 * 获取执行时间
 	 *

hutool-core/src/main/java/cn/hutool/core/thread/SyncFinisher.java

@@ -197,6 +197,9 @@ public class SyncFinisher {
 			}
 		}
 
+		/**
+		 * 任务内容
+		 */
 		public abstract void work();
 	}
 }

hutool-core/src/test/java/cn/hutool/core/thread/ConcurrencyTesterTest.java

@@ -1,10 +1,10 @@
 package cn.hutool.core.thread;
 
-import org.junit.Ignore;
-import org.junit.Test;
-
+import cn.hutool.core.date.DateUtil;
 import cn.hutool.core.lang.Console;
 import cn.hutool.core.util.RandomUtil;
+import org.junit.Ignore;
+import org.junit.Test;
 
 public class ConcurrencyTesterTest {
 
@@ -18,4 +18,19 @@ public class ConcurrencyTesterTest {
 		});
 		Console.log(tester.getInterval());
 	}
+
+	@Test
+	@Ignore
+	public void multiTest(){
+		ConcurrencyTester ct = new ConcurrencyTester(5);
+		for(int i=0;i<3;i++){
+			Console.log("开始执行第{}个",i);
+			ct.test(() -> {
+				// 需要并发测试的业务代码
+				Console.log("当前执行线程：" + Thread.currentThread().getName()+" 产生时间 "+ DateUtil.now());
+				ThreadUtil.sleep(RandomUtil.randomInt(1000, 3000));
+			});
+		}
+		Console.log("全部线程执行完毕 "+DateUtil.now());
+	}
 }