Any example for JUnit testing with RMI application?

[Helen Ma]

I am trying to write a Junit testing to test the clients' sides application when the multiple clients connecting to the single server via RMI.

Is there any code example?

I tried to develop a unit test when 2 clients connecting to a server. The server is a DVD rental application. The clients are renting DVD's. The server is manually started before the test is run.
Before the test, the DVD the clients will rent has 6 copies. No matter how many times tests are run, the DVD still has 6 copies.
I expect the result should be 4 copies after the first execution.


I guess the clients are not talking to the server during the test.
The sampleproject.db comes from from Monkhouse's SCJD exam guide.

package sampleproject.test;  
      
    import sampleproject.db.DBClient;  
    import junit.framework.Test;  
    import junit.framework.TestCase;  
    import junit.framework.TestSuite;  
    import sampleproject.db.DVD;  
      
       
    public class RmiTest extends TestCase {  
          
        
        String dbLocation ="localhost";  
        DBClient connection= null, connection1=null ;  
        String rentUPC ="327254654435";  
        public RmiTest(String name){  
             super(name);  
        }  
        /** 
         * setUp method to initialize the instance variables before tests run 
         */  
        protected void setUp() throws Exception{  
         super.setUp();  
          connection = sampleproject.remote.DvdConnector.getRemote(dbLocation, "1099");  
          connection1= sampleproject.remote.DvdConnector.getRemote(dbLocation, "1099");  
          connection.reserveDVD(rentUPC);  
          connection1.reserveDVD(rentUPC);  
           
        }  
          
          
       
        public void testReserve() throws Exception{  
               
               
             DVD movie = connection.getDVD(rentUPC);  
             assertEquals(movie.getCopy(),6);  
        }  
          
        /** 
         * tearDown method set all instance variables to null when the tests finish. 
         */  
        protected void tearDown() throws Exception{  
             super.tearDown();  
                
        }  
        /** 
         * suite method runs the tests in JUnit test execution mode 
         * @return Test testSuite 
         */  
        public static Test suite(){  
            TestSuite testSuite = new TestSuite();  
            testSuite.addTest(new RmiTest("testReserve"));  
              
        return testSuite;     
        }  
          
          
           
    }