mockito在springBoot junit中的使用案例

没用mockito之前一直在想，springBoot junit测试时，能不能不启动整个spring项目，只加载和验证我需要的类或者方法，在项目复杂和springBoot项目中用例过多的情况下，启动整个springboot项目跑junit耗时多，而且现有的微服务架构，微服务和微服务之前通过接口交互，会导致部分用例报错，在使用了Mockito之后，发现这些问题都迎刃而解了

Mockito框架官方地址mockito，文档地址。

Mockito库能够Mock对象、验证结果以及打桩(stubbing)

在springboot的pom文件中引入org.mockito包

        
            org.mockito
            mockito-core
            3.3.3
        

在springboot项目test报下新建一个package，然后再建一个测试类,给测试类增加注解，扫描使用@ContextConfiguration注解，只扫描使用到的类，@MockBean 将这些类通过mock的方式注入，@SpyBean当定义了spy方法则使用spy方法返回的结果，无定义则跑真实的方法

@RunWith(SpringRunner.class)
@ContextConfiguration(classes = {FugooPayServiceImpl.class,
        DefaultChannelSelectorContext.class, DefaultChannelSelector.class,
        PayFlowService.class, PaymentFeeService.class, FugooPayReferenceHolder.class,
        PaySequenceService.class, PaymentFeeService.class})
@SpyBean(classes = {SpringUtil.class})
@MockBean(classes = {MchPayChannelConfigMapper.class, PayFlowMapper.class, RedisService.class,
        EncrypteMappingInfoRedisTemplate.class, PaySequenceMapper.class, MchPayOrgService.class,
        DubboProperties.class, ApplicationContext.class, RedisTemplate.class})
public class PayFlowServiceTest2 {

}

实现一个入参验证用例

package com.ses.pay.channel.gateway.route;

import cn.hutool.extra.spring.SpringUtil;
import com.ses.common.api.dto.MchPayOrgConfigDto;
import com.ses.common.api.entity.PayOrderModel;
import com.ses.common.api.enums.*;
import com.ses.exception.BusiException;
import com.ses.pay.channel.gateway.provider.FugooPayService;
import com.ses.pay.gateway.entity.FugooPayResponse;
import com.ses.pay.gateway.entity.PaymentRequest;
import com.ses.pay.gateway.framework.DubboProperties;
import com.ses.pay.gateway.framework.FugooPayReferenceHolder;
import com.ses.pay.gateway.payment.mapper.MchPayChannelConfigMapper;
import com.ses.pay.gateway.payment.mapper.PayFlowMapper;
import com.ses.pay.gateway.payment.mapper.PaySequenceMapper;
import com.ses.pay.gateway.payment.provider.impl.FugooPayServiceImpl;
import com.ses.pay.gateway.payment.router.DefaultChannelSelector;
import com.ses.pay.gateway.payment.router.DefaultChannelSelectorContext;
import com.ses.pay.gateway.payment.service.*;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.mock.mockito.MockBean;
import org.springframework.boot.test.mock.mockito.SpyBean;
import org.springframework.context.ApplicationContext;
import org.springframework.data.redis.connection.BitFieldSubCommands;
import org.springframework.data.redis.core.RedisOperations;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringRunner;

import javax.annotation.Resource;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;

import static org.mockito.Mockito.*;

@RunWith(SpringRunner.class)
@ContextConfiguration(classes = {FugooPayServiceImpl.class,
        DefaultChannelSelectorContext.class, DefaultChannelSelector.class,
        PayFlowService.class, PaymentFeeService.class, FugooPayReferenceHolder.class,
        PaySequenceService.class, PaymentFeeService.class})
@SpyBean(classes = {SpringUtil.class})
@MockBean(classes = {MchPayChannelConfigMapper.class, PayFlowMapper.class, RedisService.class,
        EncrypteMappingInfoRedisTemplate.class, PaySequenceMapper.class, MchPayOrgService.class,
        DubboProperties.class, ApplicationContext.class, RedisTemplate.class})
public class PayFlowServiceTest2 {

    private static String CARD_NO = "2021031015482106800000002";

    @Autowired
    private FugooPayService fugooPayService;


    @MockBean(name="redisTemplate")
    private RedisTemplate redisTemplate;

    @MockBean
    private MchPayChannelConfigMapper mchPayChannelConfigMapper;


    @Rule
    public ExpectedException thrown = ExpectedException.none();

    @Test
    public void testfukaPayRequestDataError() {
        PaymentRequest paymentRequest = new PaymentRequest();

        when(mchPayChannelConfigMapper.
           selectAvailableProducts(anyString(),anyString(),anyString()))
            .thenReturn(buildMchPayConfigList());
        
        PayOrderModel payOrderModel = new PayOrderModel();
        payOrderModel.setCardNo(CARD_NO);
        paymentRequest.setPayOrder(payOrderModel);
        thrown.expect(BusiException.class);
        thrown.expectMessage("proCategory & payWaysCategory & merId can not be null!!!");
        fugooPayService.fukaPay(paymentRequest);
    }


}