InterfaceWrapper.java

package java_integration.fixtures;
import java.util.concurrent.Callable;
public class InterfaceWrapper {
    public static Callable giveMeBack2(Callable call) { 
			return call;
		}
    public static Runnable giveMeBack(Runnable runnable) { 
			return runnable;
		}
}

gistfile2

	describe "" do
  it "should use the same generated class for wrapping different interfaces" do
    class BugTest
      def run
      end
      def call
      end
    end
    expected1 = InterfaceWrapper.give_me_back2(InterfaceWrapper.give_me_back(BugTest.new))
    expected2 = InterfaceWrapper.give_me_back(InterfaceWrapper.give_me_back2(BugTest.new))
    expected1.java_class.should == expected2.java_class
  end
  end