ClassCastException using JUnit/Swing client

[terry_ray]

Hi,

I'm having an odd problem testing with JUnit3.7. I am using JBoss3.0.0alpha on Win2000, Sun JDK 1.3.1_01. Basically, I can test with the text JUnit, no problem. The following code in the test client works fine:

junit.textui.TestRunner.run(MyStuffTest.class);

It successfully does the JNDI lookup, narrows home interface, does the create, life is good.

But, when I attempt to use the JUnit TestRunner swingui or awtui class, I get a ClassCastException where I try to narrow the EJBHome.

Test client:

junit.swingui.TestRunner.run(MyStuffTest.class);

or

junit.awtui.TestRunner.run(MyStuffTest.class);

The top of the stack trace:
java.lang.ClassCastException
at com.sun.corba.se.internal.javax.rmi.PortableRemoteObject.narrow(Unknown Source)
at javax.rmi.PortableRemoteObject.narrow(Unknown Source)

indicates that the Sun reference ORB is coming into the picture here. Is that normal for a JBoss client?

I realize this may be a better question for JUnit instead of JBoss but I'm wondering if someone else has seen this? Or worse, that this is a Swing or AWT issue with the JDK (maybe loading the reference ORB... but why???)

This was orignially working with just jboss-client.jar and jboss-j2ee.jar in my classpath, but I added most of the other jars in the client dir hoping it would fix this (no luck).

If interested, here is the source snippet throwing the exception. This is a generic Service Locator, hence the lack of specific home interface class:

try {
Object obj = ic.lookup(jndiName);
home = (EJBHome)PortableRemoteObject.narrow(obj,
className);
return home;
} catch (NamingException ne) {
ne.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}

Any advice is much appreciated. Thanks,

Terry

[soluos]

I get the same error using junit 3.6 with jboss 2.4.1. on nt 4. Using the junit awtui causes the classcastexception when trying to narrow but the text interface works fine.

[tobyhede]

Just experienced this issue myself and found it documented in the FAQ that comes with JUnit 3.7...

You have to turn off the "Reload Classes every run" option in JUnit.

[cjohan]

You can turn off JUnit's class reloading by setting "loading=false" in your junit.properties file, which is found by means of the USER.HOME system property.

For example, in your Ant build.xml file you can use something like:

[joelvogt]

another option is the -noloading flag when you start the gui client

[cobraflow]

I'm not sure if this is the same problem...but...

I use a WebStart client (WAR) that accesses a Session bean...I get the same Exception as above...This all worked under 2.4 but is causing me problems under 3.0.0

Is this the same problem?

What are you guys trying to do with these various flags?

Lewis