jmockit中文网 dubbo bean
Dubbo是我们常用的RPC框架,在写单元测试需要调用Dubbo消费Bean时,如何模拟Dubbo消费Bean的行为呢?
就拿发邮件来说,通常,在代码中,我们是调用邮件的Dubbo服务来完成发送邮件的目的,于是我们会在Spring配置好的发邮件的Dubbo消费Bean,
dubbo-consumer.xml
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | <? xml version = "1.0" encoding = "utf-8" ?> < beans xmlns = "http://www.springframework.org/schema/beans" xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance" xmlns:dubbo = "http://dubbo.apache.org/schema/dubbo" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd http://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd"> < dubbo:application name = "consumer-of-dubbo-mock-test" /> < dubbo:registry address = "zookeeper://your-zk-address:2181" /> <!-- 生成远程服务代理,可以和本地bean一样使用mailService --> < dubbo:reference id = "mailService" interface = "cn.jmockit.demos.MailService" /> </ beans > |
熟悉Dubbo的朋友都知道,上面xml配置是Dubbo的基本配置,配置了dubbo服务的zookeeper地址,还配置了名叫mailService的Dubbo消费Bean,用于在应用程序中发送邮件。
我们在运行单元测试时,如果zookeeper连不上或者mailService的服务提供者不存在,则会导致Spring初始化失败, 而且我们也不希望真正发送邮件(除非是为了测试发送邮件)。于是我们希望对mailService进行Mock。
下面给出一种Mock Dubbo消费Bean的方案:
在spring初始化前,对所有Dubbo消费Bean的进行Mock,即<dubbo>标签里的interface都返回本地默认实现。
如果想对某几个Dubbo消费Bean进行Mock,则自定义Dubbo消费Bean的实现即可。
请看测试代码:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 | //dubbo消费bean Mock @SuppressWarnings ({ "unchecked" , "rawtypes" }) @ContextConfiguration (locations = { "/META-INF/dubbo-consumer.xml" }) @RunWith (SpringJUnit4ClassRunner. class ) public class DubboConsumerBeanMockingTest { // 这里要@BeforeClass,因为要抢在spring加载dubbo前,对dubbo的消费工厂bean // ReferenceBean进行mock,不然dubbo可能因为连上不zk或无法找不 // 服务的提供者等原因而无法初始化的,进而,单元测试运行不下去 @BeforeClass public static void mockDubbo() { // 你准备mock哪个消费bean // 比如要对dubbo-consumber.xml里配置的cn.jmockit.demos.MailService这个消费bean进行mock Map<String, Object> mockMap = new HashMap<String, Object>(); mockMap.put( "cn.jmockit.demos.MailService" , new MockUp(MailService. class ) { // 在这里书写对这个消费bean进行mock的mock逻辑,想mock哪个方法,就自行添加,注意方法一定要加上@Mock注解哦 @Mock public boolean sendMail( long userId, String content) { // 单元测试时,不需要调用邮件服务器发送邮件,这里统一mock邮件发送成功 return true ; } }.getMockInstance()); // 如果要Mock其它的消费bean,自行添加,mockMap.put.....如上 new DubboConsumerBeanMockUp(mockMap); } // 现在你使用的dubbo消费bean就是本地mock过的了,并不是指向远程dubbo服务的bean了 @Resource MailService mailService; @Test public void testSendMail() { long userId = 123456 ; String content = "test mail content" ; Assert.isTrue(mailService.sendMail(userId, content)); } } |
上述代码,最关键的就是DubboConsumerBeanMockUp类了,这个类Mock了所有的Dubbo消费Bean.
源代码如下:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | //dubbo消费bean的MockUp(伪类) @SuppressWarnings ( "rawtypes" ) public class DubboConsumerBeanMockUp extends MockUp<ReferenceBean> { // 自定义的消费bean mock对象 private Map<String, Object> mockMap; public DubboConsumerBeanMockUp() { } public DubboConsumerBeanMockUp(Map<String, Object> mockMap) { this .mockMap = mockMap; } // 对ReferenceBean的getObject方法的Mock @SuppressWarnings ( "unchecked" ) @Mock public Object getObject(Invocation inv) throws Exception { ReferenceBean ref = inv.getInvokedInstance(); String interfaceName = ref.getInterface(); Object mock = mockMap.get(interfaceName); if (mock != null ) { return mock; } return ( new MockUp(Class.forName(interfaceName)) { }).getMockInstance(); } } |
© JMockit中文网 2018 打赏咖啡
相关推荐
aNian 2020-06-03
ATenhong 2020-10-15
supperme 2020-09-08
doctorvian 2020-08-02
aNian 2020-08-01
kongjunlongaa 2020-06-29
Fightingxr 2020-06-26
whileinsist 2020-06-24
doctorvian 2020-06-16
XuNeely 2020-06-16
wangyangsoftware 2020-06-16
大步流星 2020-06-16
aNian 2020-06-16
gaoyongstone 2020-06-16
MartellJenkins 2020-06-11
范群松 2020-06-11
Fightingxr 2020-06-08
XuNeely 2020-06-07