feat(mapper): 添加 MpUserMapper 及用户插入测试

新增 MpUserMapper 接口，扩展自 Mybatis Plus 的 BaseMapper，用于 User 实体的数据库操作。在 UserMapperTest 中添加 testAddUser 方法以验证用户插入功能，使用 SQLite 数据库进行单元测试。

src/main/java/top/suyiiyii/sims/SimsApplication.java

@@ -1,11 +1,13 @@
 package top.suyiiyii.sims;
 
 import com.tangzc.autotable.springboot.EnableAutoTable;
+import org.mybatis.spring.annotation.MapperScan;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
-/*@EnableAutoTable*/
+@EnableAutoTable
 @SpringBootApplication
+@MapperScan("top.suyiiyii.sims.mapper")
 public class SimsApplication {
     public static void main(String[] args) {
         SpringApplication.run(SimsApplication.class, args);

src/main/java/top/suyiiyii/sims/mapper/MpUserMapper.java

@@ -0,0 +1,7 @@
+package top.suyiiyii.sims.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import top.suyiiyii.sims.entity.User;
+
+public interface MpUserMapper extends BaseMapper<User> {
+}

src/main/resources/application-test.yaml

@@ -0,0 +1,8 @@
+spring:
+  datasource:
+    url: jdbc:sqlite:test.db:testdb?cache=shared
+    driver-class-name: org.sqlite.JDBC
+    username:
+    password:
+
+

src/test/java/top/suyiiyii/sims/mapper/UserMapperTest.java

@@ -0,0 +1,33 @@
+package top.suyiiyii.sims.mapper;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.ActiveProfiles;
+import top.suyiiyii.sims.entity.User;
+
+@SpringBootTest
+@ActiveProfiles("test")
+public class UserMapperTest {
+
+    @Autowired
+    private MpUserMapper userMapper;
+
+    @Test
+    public void testAddUser() {
+        User user = new User();
+        user.setStudentId(1);
+        user.setUsername("test");
+        user.setPassword("test");
+        user.setEmail("test");
+        user.setGrade("test");
+        user.setUserGroup("test");
+
+
+
+        int result = userMapper.insert(user);
+        Assertions.assertEquals(1, result);
+    }
+
+}