Mocking DAO object with MockMvc in Spring Boot - spring-boot

Question

I am new to Integration testing. I have Spring Integration application for which I am writing test cases. here is how I am writing test case:
Activator:
#Service
public class ProdAppActivator {
#Autowired
private ApplicantDAO applicantDAO;
#Transactional
public ApplicantDTO prodApp(ApplicantDTO applicant)
throws TechnicalException, BusinessException {
applicantDAO.updateApp(applicant);
return application;
}
}
Test Class:
public class AcctImplTest extends AbstractTest {
#MockBean
private ApplicantDAO applicantDAO;
#Override
#Before
public void setUp() {
super.setUp();
}
#Test
public void testProdApp() throws Exception {
ProdAppRequest appRequest = getProdAppRequest();
mvc.perform(post("/baseurl/applicant").headers(getHeaders()).accept(MediaType.APPLICATION_JSON)
.content(mapToJson(appRequest)).contentType(MediaType.APPLICATION_JSON)).andDo(print())
.andExpect(status().isOk());
}
}
AbstractTest:
#RunWith(SpringJUnit4ClassRunner.class)
#ContextConfiguration(locations = { "classpath:group/deposit/svc/product-application-context-test.xml" })
#WebMvcTest
//#IfProfileValue(name ="profiles.active", value ="Integration")
public abstract class AbstractTest {
protected MockMvc mvc;
#Autowired
WebApplicationContext webApplicationContext;
protected void setUp() {
setCMD();
mvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).build();
}
}
I have 2 issues:
This activator has a method with #Transactional annotation. I am not sure why but because of this annotation my test getting failed and giving error as:
java.lang.ClassLoader.loadClass(ClassLoader.java:424)
sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
java.lang.ClassLoader.loadClass(ClassLoader.java:357)
org.springframework.orm.hibernate4.HibernateTransactionManager.isSameConnectionForEntireSession(HibernateTransactionManager.java:711)
org.springframework.orm.hibernate4.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:445)
org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:378)
org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:474)
org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:289)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185)
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:688)
com.hsbc.group.depositproduct.us.svc.activators.RecordProdAppActivator$$EnhancerBySpringCGLIB$$d1f3f882.recordProdApp(<generated>)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:498)
When I remove this annotation everything works fine. But I don't want to remove this annotation so can some please suggest how to write test here.
if I remove #Transactional annotation; I have used #MockBean to mock DAO object(Interface) and its mocking given object but when I try to return expected value for any DAO call its returning default value. Can some one please suggest how to mock DAO while using #MockBean. I have tried #SpyBean, and other possible ways but didn't get success.
Thanks in advance.