Testing ServiceLocator using JUnit

Question

This is a follow up question to my previous question.

I am trying to write test case for my ServiceLocator class but it gives me the following error:

com/iplanet/ias/admin/common/ASException
java.lang.NoClassDefFoundError: com/iplanet/ias/admin/common/ASException
        at java.lang.ClassLoader.defineClass1(Native Method)

My test case:

public void testServiceLocator () throws UivException, NamingException
{
    DataSource ds = ServiceLocator.getInstance().getDataSource("jdbc/RSRC/my/mydb");
    //I have not put any assert statements because i know above line is failing
}

The above code fails on getInstance() method which looks like this:

static public ServiceLocator getInstance() throws UivException {
    try {
        if (me == null) {
          synchronized(ServiceLocator.class) {
            me = new ServiceLocator();
          }
        }
        return me;
    }
    catch (UivException e) {
          throw new UivException(ErrorCode.SERVICE_LOCATOR_ERROR,
                                 ErrorCode.SERVICE_LOCATOR_LOOKUP_ERROR,
                                 e.getMessage());
    }
}

I know this ServiceLocator works fine because when I test my application from the front end there are no issues. Only reason I am writing this test case is because I want to test my DAO. And for me to test my DAO ServiceLocator has to work (from JUnit).

I don't have a clue what to make of the error message. Does anyone want to suggest something I can try that will hopefully work?

EDIT: ServiceLocator constructor

private ServiceLocator() throws UivException  {
    try {
        ic = new InitialContext();
        // System.out.println("Created the Initial Context");
        cache = Collections.synchronizedMap(new HashMap());
    }
    catch (NamingException ne) {
        throw new UivException(ErrorCode.SERVICE_LOCATOR_ERROR,
                               0, ne.getMessage());
    }
    catch (NullPointerException e) {
          throw new UivException(ErrorCode.SERVICE_LOCATOR_ERROR,
                                 0, e.getMessage());
    }
}

Answer 1

Well, is com.iplanet.ias.admin.common.ASException on the classpath when you invoke your tests?

Are you relying on the app server to have the JDBC driver's libraries in it's classpath, or are you deploying it yourself?