Description of problem:

Test scenario fails to run when using enums. Tested with the setup below.

Email from the rules-users mailing list:

"Hi all, I'm defining a test scenario within guvnor (now called kie-workbench)
and I'm experiencing some issues about using java enums.

The case is simple, I have a java model (deploying a jar) with a class
having a member of enum type. The enum is defined in the same package but in
a different java file, not an inner class. This is packed in a jar that I
deploy manually uploading the file to the embedded maven repo using the
workbench.

/
public class ClassWithMemberAsEnum { private EnumType enumMember;
/*getters/setters included*/}
public enum EnumType {HELLO, BYE}
/

Then I write a dummy rule with the guided editor like this:

/
import es.shin.test.ClassWithMemberAsEnum;
import es.shin.test.EnumType;
        
rule "DummyRule"
    dialect "mvel"
    when
        x : ClassWithMemberAsEnum( enumMember == EnumType.HELLO )
    then
        x.setEnumMember( EnumType.BYE );
end
/

And finally a test scenario inserting a ClassWithMemberAsEnum initialized
with enumMember=EnumType.HELLO and checking that it is changed to
EnumType.BYE after firing all rules.

The error message returned in the reporting console is:

/
EnumTest : [Error: unable to resolve method using strict-mode:
java.lang.Object.es()] [Near : {... es.shin.test.EnumType.HELLO ....}] ^
[Line: 1, Column: 1]
/

I have tried the same case but defining the class in the data modeler and
the enum with the enumeration editor, without using any jar artifact. The
case worked as expected."