3x 来一波测试用例

mybatis-plus-core/src/main/java/com/baomidou/mybatisplus/core/conditions/interfaces/Join.java

@@ -17,6 +17,8 @@ package com.baomidou.mybatisplus.core.conditions.interfaces;
 
 import static com.baomidou.mybatisplus.core.enums.SqlKeyword.EXISTS;
 
+import java.io.Serializable;
+
 /**
  * <p>
  * 查询条件封装
@@ -26,7 +28,7 @@ import static com.baomidou.mybatisplus.core.enums.SqlKeyword.EXISTS;
  * @author hubin miemie HCL
  * @since 2017-05-26
  */
-public interface Join<This> {
+public interface Join<This> extends Serializable {
 
     /**
      * 拼接 AND