fix a bug that will happen when group leader quit the group.

src/main/java/com/peteralbus/service/ParticipateService.java

@@ -164,7 +164,7 @@ public class ParticipateService
         QueryWrapper<Record> recordQueryWrapper=new QueryWrapper<>();
         recordQueryWrapper.eq("participation_id",participate.getParticipationId());
         recordDao.delete(recordQueryWrapper);
-        if(group.getLeaderId().equals(participate.getUserId())&&count==2)
+        if(group.getLeaderId().equals(participate.getUserId())&&count==1)
         {
             participateDao.deleteById(participationId);
             return groupDao.deleteById(group);

src/test/java/com/peteralbus/MybatisPlusTest.java

@@ -1,27 +0,0 @@
-package com.peteralbus;
-
-import com.peteralbus.dao.UserDao;
-import com.peteralbus.entity.User;
-import com.peteralbus.service.UserService;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.test.context.ContextConfiguration;
-import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
-
-@RunWith(SpringJUnit4ClassRunner.class) // SpringJUnit支持，由此引入Spring-Test框架支持！
-@ContextConfiguration(locations = {"classpath:mybatis-config.xml","classpath:applicationContext.xml"})//用于加载bean
-public class MybatisPlusTest
-{
-    @Autowired
-    UserDao userDao;
-    @Autowired
-    UserService userService;
-    @Test
-    public void test()
-    {
-        User user=userService.queryByUsername("PeterAlbus");
-        user.setUserPhone("17317792001");
-        userDao.updateById(user);
-    }
-}