[MO-java-users] Help Using expectAndReturn with a Mock object as the return value .

[Cruz, E. J. <e....@ra...>]

	Hi, 

	I have an interface described below.

      	interface AccountBusiness {
		public UserTo authenticateUser(AccountTo account);
	}

	interface AccountDao {
		public AccountBusiness getAccount(account);
	}

	I have a method that uses this interface below:

	public UserTo authenticateUser(AccountTo account) {
		AccountBusiness accountBusiness = null;
		
		accountBusiness = getAccount(account);

		/** Some more stuff to perform authentication */
	}


         	private AccountBusiness getAccount(accounTo account) {	

	AccountBusiness accountBusiness = null;
     	 try {
                  	defaultDaoManager.startTransaction();
         		accountBusiness = accountDao.getAccount(account);
<------------  This line produces the error below.
         		defaultDaoManager.commitTransaction();
         	} catch (DaoException de) {
        	 	try {
            		defaultDaoManager.rollbackTransaction();
         		} catch (DaoException de2) {

		log.error(de.getMessage(), de);
         		throw new ResourceException(de);
         	}
	return accountBusiness;	
	}


          	I am trying to test this method using Mock Objects.  I have
the following code to test this:
	
	public class AccountAppServiceTest extends TestCase {

   		private AccountAppService accountAppService = null;
   		private AccountTo account = null;
   		private DaoManager defaultDaoManager = null;
   		private Mock accountDao = null;

   		protected void setUp() throws Exception {
      			super.setUp();
      			defaultDaoManager = new DaoManagerMock();
      			accountDao = new Mock(AccountDAO.class);
      			accountAppService = new AccountAppService
         				(defaultDaoManager,
(AccountDAO)accountDao.proxy());
      			account = new AccountTo();
      			account.setUsername("ecruz");
      			account.setPassword("testing");
      			account.setStatus("Active");
      			account.setBadPasswordCounter(2);
      			account.setDatePasswordChanged(new Date());
     			account.setFirstLogin(true);
   		}

		 public void testAuthenticateUser() {
      			//Setup
      			Mock returnMock = new Mock(AccountBusiness.class);
      			UserTo expectedUser = new
UserTo(account.getUsername());
      			List expectedRoles = new ArrayList();
      			expectedRoles.add("test");
      			expectedRoles.add("test1");

      			AccountBusiness returnVal =
(AccountBusiness)returnMock.proxy();

					/** Here I tell it to expect the
call to the accountDao getAccount method and to return the AccountBusiness
Mock proxy but I receive the error below.*/

      			accountDao.expectAndReturn("getAccount",
C.eq(account),
 
(AccountBusiness)returnMock.proxy());   

      			returnMock.expectAndReturn("authenticateUser",
C.eq(account),
                        			       expectedUser);

			accountDao.expectAndReturn("getAccountRoles",
C.eq(account), expectedRoles);
     			UserTo actualUser = null;

      			//Run
			try {
         				actualUser =
accountAppService.authenticateUser(account);
      			} catch (Exception e) {
         				e.printStackTrace();
         				this.fail("Unexpected Exception
reported " + e.toString());
      			}

      			//Validate
      			this.assertEquals("Unexpected UserName: ",
expectedUser.getUserName(),
                        		  actualUser.getUserName());
      			this.assertEquals("Unexpected Roles: ",
expectedRoles,
                        		  actualUser.getRoles());

      			accountDao.verify();
      			returnMock.verify();
   		}

		protected void tearDown() throws Exception {
		 	// Set everything to null
		}
	}	

	I receive this error when the accountDao.getAccount(account) method
is called above in the private getAccount 
	method of the AccountAppService.  
	
	I use the same type of return value in the expect in another test
case and I do not get any errors.  

	Any Suggestions on what this may be? 

	
          [junit] ------------- Standard Error -----------------
          [junit] java.lang.ClassCastException
          [junit]    at $Proxy0.getAccount(Unknown Source)
          [junit]    at
gov.wos.domain.account.AccountAppService.getAccount(Unknown Source)
          [junit]    at
gov.wos.domain.account.AccountAppService.authenticateUser(Unknown Source)
          [junit]    at
gov.wos.domain.account.AccountAppServiceTest.testAuthenticateUser(Unknown
Source)
          [junit]    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)
          [junit]    at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39
)
          [junit]    at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
.java:25)
          [junit]    at java.lang.reflect.Method.invoke(Method.java:324)
          [junit]    at junit.framework.TestCase.runTest(TestCase.java:154)
          [junit]    at junit.framework.TestCase.runBare(TestCase.java:127)
          [junit]    at
junit.framework.TestResult$1.protect(TestResult.java:106)
          [junit]    at
junit.framework.TestResult.runProtected(TestResult.java:124)
          [junit]    at junit.framework.TestResult.run(TestResult.java:109)
          [junit]    at junit.framework.TestCase.run(TestCase.java:118)
          [junit]    at
junit.framework.TestSuite.runTest(TestSuite.java:208)
          [junit]    at junit.framework.TestSuite.run(TestSuite.java:203)
          [junit]    at
org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.run(JUnitTestRu
nner.java:325)
          [junit]    at
org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(JUnitTestR
unner.java:524)
          [junit] ------------- ---------------- ---------------
          [junit] Testcase:
testAuthenticateUser(gov.wos.domain.account.AccountAppServiceTest):   FAILED
          [junit] Unexpected Exception reported java.lang.ClassCastException
          [junit] junit.framework.AssertionFailedError: Unexpected Exception
reported java.lang.ClassCastException
          [junit]    at
gov.wos.domain.account.AccountAppServiceTest.testAuthenticateUser(Unknown
Source)
          [junit]    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)
          [junit]    at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39
)
          [junit]    at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
.java:25)
      


Jamie Cruz
Software Engineering 
e....@ra... 
(301)688-1430