Created attachment 995649 [details]
test project showing failures

Having simple SEI and POJO webservice with JDK8 feature - default method for interface:

@WebService
public interface GreeterSEI {
   default public String sayHello() {
      return "Hello, Default";
   }
}
 
//----------------------------------------------------------
 
@WebService
public class GreeterImpl implements GreeterSEI {}



When you try to execute sayHello method:

Service greeterService = Service.create(...);
GreeterSEI g = greeterService.getPort(GreeterSEI.class);
 
Assert.assertEquals("JBoss", greeter.sayHello());

You will get a message-less IllegalStateException on server:




How reproducible:
always


Steps to Reproduce:
1. get attached test project
2. mvn test -Djboss.home=/path/to/server


Actual results:
message-less IllegalStateException on server thrown

Expected results:
no exception, default implementation of method is invoked.
Or if this is considered unsupported usage, the exception must be more descriptive (ie.: "Method xx not found on implementation class")