UserServiceImplTest.java

package com.kwan.springbootkwan;

import com.kwan.springbootkwan.entity.User;
import com.kwan.springbootkwan.mapper.UserMapper;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;



@SpringBootTest
public class UserServiceImplTest {

    @Autowired
    private UserMapper userService;

    @Test
    public void queryAll() {
        User user = userService.selectById(1);
        System.out.println(user);
    }
}