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Testing MyBatis Annotation-based User Mapping in spring-boot-examples

This test suite validates the UserMapper functionality in a Spring Boot application using MyBatis annotations. It covers essential CRUD operations for user management, ensuring reliable data persistence and retrieval through MyBatis-annotated mappings.

Test Coverage Overview

The test suite provides comprehensive coverage of UserMapper operations:

Insert operations with multiple user records
Query functionality for retrieving user lists
Update operations with user attribute modifications
Data integrity validation through assertions

Implementation Analysis

The testing approach utilizes Spring Boot’s testing framework with JUnit integration. It implements @SpringBootTest for full application context loading and dependency injection of the UserMapper component. The tests follow a clear arrange-act-assert pattern with explicit verification of expected outcomes.

Technical Details

Key technical components include:

SpringRunner for test execution
JUnit 4 testing framework
MyBatis annotation-based mapping
Spring Boot test context configuration
Automated dependency injection with @Autowired
UserSexEnum for enumerated type handling

Best Practices Demonstrated

The test suite exemplifies several testing best practices:

Isolated test methods for specific functionality
Clear test method naming conventions
Proper assertion usage for validation
Spring Boot test configuration best practices
Effective use of Spring’s dependency injection

ityouknow/spring-boot-examples

2.x/spring-boot-mybatis/spring-boot-mybatis-annotation/src/test/java/com/neo/mapper/UserMapperTest.java

            
package com.neo.mapper;

import java.util.List;

import com.neo.model.User;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import com.neo.enums.UserSexEnum;

@RunWith(SpringRunner.class)
@SpringBootTest
public class UserMapperTest {

	@Autowired
	private UserMapper userMapper;

	@Test
	public void testInsert() throws Exception {
		userMapper.insert(new User("aa1", "a123456", UserSexEnum.MAN));
		userMapper.insert(new User("bb1", "b123456", UserSexEnum.WOMAN));
		userMapper.insert(new User("cc1", "b123456", UserSexEnum.WOMAN));

		Assert.assertEquals(3, userMapper.getAll().size());
	}

	@Test
	public void testQuery() throws Exception {
		List<User> users = userMapper.getAll();
		System.out.println(users.toString());
	}
	
	
	@Test
	public void testUpdate() throws Exception {
		User user = userMapper.getOne(30l);
		System.out.println(user.toString());
		user.setNickName("neo");
		userMapper.update(user);
		Assert.assertTrue(("neo".equals(userMapper.getOne(30l).getNickName())));
	}

}