我正在开发 Hibernate 和 Spring MVC 应用程序，但我想使用 Easy Mock 测试我的ServiceLayer，我这样做但我不明白这是否正确。请检查下面的代码并给我建议
StudentDao
package com.bhanu.dao;
import com.bhanu.entity.StudentEntity;
import com.bhanu.modelpojo.Student;
public interface StudentDao {
public StudentEntity login(Student student);
public StudentEntity findUser(String email);
} 的 StudentService
package com.bhanu.service;
import com.bhanu.entity.StudentEntity;
import com.bhanu.modelpojo.Student;
public interface StudentService{
public StudentEntity login(Student student);
public StudentEntity findUser(String email);
}
StudentServiceImpl
@Service
public class StudentServiceImpl implements StudentService {
@Autowired
private BaseDao baseDao;
@Autowired
private JavaMailSender mailSender;
@Autowired
private StudentDao studentDao;
public StudentServiceImpl() {
super();
// TODO Auto-generated constructor stub
}
@Override
public StudentEntity login(Student student) {
StudentEntity studentEntity = studentDao.login(student);
return studentEntity;
}
public BaseDao getBaseDao() {
return baseDao;
}
public void setBaseDao(BaseDao baseDao) {
this.baseDao = baseDao;
}
public JavaMailSender getMailSender() {
return mailSender;
}
public void setMailSender(JavaMailSender mailSender) {
this.mailSender = mailSender;
}
public StudentDao getStudentDao() {
return studentDao;
}
public void setStudentDao(StudentDao studentDao) {
this.studentDao = studentDao;
}
}
mvc-dispatcher-servlet.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:component-scan base-package="com.bhanu" />
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/pages/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/student" />
<property name="username" value="root" />
<property name="password" value="root" />
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan" value="com.bhanu.entity" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
<!-- <prop key="hibernate.current_session_context_class">thread</prop> -->
<prop key="hibernate.hbm2ddl.auto">update</prop>
<prop key="hibernate.show_sql">false</prop>
<prop key="hibernate.format_sql">false</prop>
<prop key="hibernate.cache.use_second_level_cache">false</prop>
<prop key="hibernate.cache.use_query_cache">false</prop>
</props>
</property>
</bean>
<bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
对MyTestCase
package com.bhanu.servicesimpl;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:mvc-dispatcher-servlet.xml")
public class MyTestCase {
private StudentServiceImpl studentServiceImpl;
private StudentDao studentDao;
private BaseDao baseDao;
private JavaMailSender javaMailSender;
//execute before test
@Before
public void before() {
studentDao =EasyMock.createStrictMock(StudentDao.class);
baseDao =EasyMock.createStrictMock(BaseDao.class);
javaMailSender =EasyMock.createStrictMock(JavaMailSender.class);
studentServiceImpl = new StudentServiceImpl();
studentServiceImpl.setBaseDao(baseDao);
studentServiceImpl.setMailSender(javaMailSender);
studentServiceImpl.setStudentDao(studentDao);
System.out.println("in before");
}
//test case
@Test
public void test() {
System.out.println("in test");
Student student = new Student();
student.setEmail("hari@gmail.com");
student.setPassword("12530");
EasyMock.expect(studentDao.login(student))
.andReturn(new StudentEntity());
EasyMock.replay(studentDao);
StudentEntity studentEntity1 =studentServiceImpl.login(student);
System.out.println(studentEntity1 .getEmailId());***//I got Null Value***
assertNotNull(studentEntity1);
EasyMock.verify(studentDao);
}
}
更多信息我也在写我的DaoImpl 的 StudentDaoImpl
@SuppressWarnings("unchecked")
@Repository
public class StudentDaoImpl implements StudentDao {
@Autowired
private HibernateTemplate hibernateTemplate;
@Override
public StudentEntity findUser(String email) {
StudentEntity myStudentObject = null;
StudentEntity studentEntity = new StudentEntity();
studentEntity.setEmail(email);
List<StudentEntity> studentList = hibernateTemplate.findByExample(
studentEntity.getClass().getName(), studentEntity);
if (studentList != null && studentList.isEmpty() && studentList.size()!=0) {
myStudentObject = DataAccessUtils.requiredUniqueResult(studentList);
}
return myStudentObject;
}
}
在我的数据库中，我记录了hari@gmail.com＆amp;以上密码，但是当我执行我的测试用例时，我没有得到那条记录。请告诉我，如果我做了任何错误，这是正确的方法来编写简单的模拟，如果是错的请告诉我如何编写测试用例很容易模拟。任何人帮助我。
答案 0 :(得分：1)
你拥有的是完全正常的。但我认为你还没有真正明白模拟是什么。模拟是＆＃34;虚假＆＃34;实现没有任何作用的类或接口，除了你告诉它做的事情。在测试服务时模拟DAO的重点是能够测试服务逻辑而不需要实际需要功能DAO，填充测试数据的数据库等。
所以当你说
时studentDao =EasyMock.createStrictMock(StudentDao.class);
studentServiceImpl = new StudentServiceImpl();
studentServiceImpl.setStudentDao(studentDao);
您正在创建使用此类＆＃34; false＆＃34; DAO。
默认情况下，除了返回null或默认值之外，所有DAO方法都不会执行任何操作。
当你这样做时
EasyMock.expect(studentDao.login(student)).andReturn(new StudentEntity());
并重播模拟，然后每次使用此学生作为参数调用DAO的login（）方法时，它将返回一个新的StudentEntity。很明显，这个新的StudentEntity有一个空电子邮件，因为StudentEntity的构造函数将电子邮件保留为null。因此，您在数据库中拥有的内容完全无关紧要。
请注意，此类测试不需要运行任何Spring上下文。它不需要用
注释@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:mvc-dispatcher-servlet.xml")
因为你根本不使用Spring。这就是依赖注入如此有用的原因：它允许对代码进行单元测试，而不需要任何依赖，任何框架或任何东西。