今天完成到事，测试通用mapper 和 pagehelp

package com.artist.service.Impl;

import com.artist.entity.Student;
import com.artist.service.StudentService;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.github.pagehelper.PageRowBounds;
import org.junit.Before;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import tk.mybatis.mapper.entity.Example;

import java.util.List;

import static org.junit.Assert.*;

public class StudentServiceImplTest {
    private ApplicationContext ac;
    @Autowired
    private StudentService studentService;

    @Before
    public void test() {
        ac = new ClassPathXmlApplicationContext("spring/applicationContext.xml");
        studentService = (StudentService) ac.getBean("studentService");
    }

    @Test
    public void selectAll() {
        List<Student> list = studentService.selectAll();
        System.out.println(list);
    }

    @Test
    public void selectOne() {
        Student select1 = new Student(null, "赵子", null, null, "北京");
        Student selectResult = studentService.selectOne(select1);
        System.out.println(selectResult);
    }

    @Test
    public void saveStudent() {
        //创建实体类对象要保存到数据库到数据
        Student student = new Student(null, "dengKeRong", "男", 3, "湖南");
        //执行插入操作
        studentService.saveStudent(student);
    }

    @Test
    public void testInsertSelective() {
        //创建实体类对象要保存到数据库到数据
        Student student = new Student(null, "artist", "男", null, null);
        //执行插入操作
        studentService.saveStudentSelective(student);
    }
    @Test
    public void updateBYPrimaryKey() {

      Student student = new Student(27, "王三", "女", 1, "长沙");
      studentService.updateBYPrimaryKey(student);
    }

    @Test
    public void testUpdateByPrimaryKeySelective() {
        //创建实体类对象要更新到数据库到数据
        Student student = new Student(8, "王三", "女", 1, null);
        studentService.updateBYPrimaryKeySelective(student);
    }

   /*   @Test
    public void testDeleteByPrimaryKey() {
        Integer sid = 30;
        studentService.deleteByPrimaryKey(sid);
    }*/

    @Test
    public void testSelectByExample1() {
//                   criteria01                      cariteria02
//        目标：WHERE (sname= ? AND sex =?) OR (sname = ?  AND birthday = ?)
//        1.创建Example对象
        Example example = new Example(Student.class);
//     2   通过Example 创建Criteria对象
        Example.Criteria criteria01 = example.createCriteria();
        Example.Criteria criteria02 = example.createCriteria();
//        3 在两个Criteria 对象中分别设置查询条件
        //property参数： 实体类到属性名
        //value参数:实体类到属性值

    }

    /*分页查询*/
    @Test
    public void testSelectByExample() {
        PageHelper.startPage(1, 2);
        Example example = new Example(Student.class);
        Example.Criteria criteria = example.createCriteria();
        criteria.toString();
        example.orderBy("sid").asc();
        List<Student> list = studentService.selectExample(example);
        //分页信息对象
        PageInfo pageInfo = new PageInfo<Student>(list);
        System.out.println("总记录熟："+pageInfo.getTotal());
        System.out.println("总页数："+pageInfo.getPages());
        System.out.println("单前页号："+pageInfo.getPageNum());
        System.out.println("页大小："+pageInfo.getPageSize());

        for (Student student : list) {
            System.out.println(student);
        }
    }

    @Test
    public void selectStudentById() {
        Integer sid=8;
        System.out.println(studentService.selectStudentById(sid));
    }


}