service层测试较简单，目前大多数测试主要是针对public方法进行的。依据测试方法划分，可以分为两种：基于mock的隔离测试和基于dbunit的普通测试。

mock隔离测试

配置pom.xml

junit

junit

4.12

org.mockito

mockito-all

1.10.19

测试原理

隔离测试主要通过@Mock和@InjectMocks两个注解来实现模拟与被模拟。

@Mock：模拟出一个Mock对象，对象是空的，需要指明对象调用什么方法，传入什么参数时，返回什么值

@InjectMocks：依赖@Mock对象的类，也即是被测试的类。@Mock出的对象会被注入到@InjectMocks对象中

测试示例

被测类及方法

import com.agoura.agoura.entity.Members;

import com.agoura.agoura.mapper.MembersMapper;

import com.agoura.agoura.service.MembersService;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;

@Service

public class MembersServiceImpl implements MembersService {

@Autowired

private MembersMapper membersMapper;

@Override

public Members getMemberById(int id) {

return membersMapper.selectByPrimaryKey(id);

}

}

测试类及方法

import com.agoura.agoura.entity.Members;

import com.agoura.agoura.mapper.MembersMapper;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.mockito.InjectMocks;

import org.mockito.Mock;

import org.mockito.Mockito;

import org.mockito.MockitoAnnotations;

import org.springframework.test.context.ContextConfiguration;

import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import static org.junit.Assert.assertEquals;

import static org.mockito.Mockito.when;

@RunWith(SpringJUnit4ClassRunner.class)

@ContextConfiguration(locations = {"classpath*:spring-mybatis.xml"})

public class MembersServiceTest {

@Mock

private MembersMapper membersMapper;

@InjectMocks

private MembersServiceImpl membersService;

@Before

public void setUp() throws Exception {

MockitoAnnotations.initMocks(this);

}

@Test

public void testGetMembersById() {

Members m = new Members(3, "wangwu", 1, 5, "12131232342");

when(membersMapper.selectByPrimaryKey(3)).thenReturn(m);

Members result = membersService.getMemberById(3);

System.out.println(result);

assertEquals(m, result);

when(membersMapper.selectByPrimaryKey(Mockito.anyInt())).thenReturn(m);

result = membersService.getMemberById(3);

System.out.println(result);

assertEquals(m, result);

}

}

测试结果

基于dbunit普通测试

unitils-dbunit测试直接模拟底层数据库中存储的内容，对service层进行测试的时候会直接连同DAO层一起测试。具体测试方法可以参考基于dbunit进行mybatis DAO层Excel单元测试