OO-150: better check if a test is closed before trying to show it ( in case of back/resume)

--HG--
branch : 80-patch

src/main/java/org/olat/course/nodes/iq/IQRunController.java

@@ -393,7 +393,10 @@ public class IQRunController extends BasicController implements GenericEventList
 			if(returnController instanceof IQDisplayController){
 				displayController = (IQDisplayController)returnController;
 				listenTo(displayController);
-				if (displayController.isReady()) {
+				if(displayController.isClosed()) {
+					//do nothing
+					System.out.println();
+				} else  if (displayController.isReady()) {
 					// in case displayController was unable to initialize, a message was set by displayController
 					// this is the case if no more attempts or security check was unsuccessfull
 					displayContainerController = new LayoutMain3ColsController(ureq, getWindowControl(), null, null, displayController.getInitialComponent(), null);
@@ -421,6 +424,8 @@ public class IQRunController extends BasicController implements GenericEventList
 						singleUserEventCenter.fireEventToListenersOf(new AssessmentEvent(AssessmentEvent.TYPE.STARTED, ureq.getUserSession()), assessmentEventOres);						
 					}
 				}//endif isReady
+			
+				
 			}else{
 				// -> qti file was locked -> show info message
 				// user must click again on course node to activate

src/main/java/org/olat/modules/iq/IQDisplayController.java

@@ -344,6 +344,11 @@ public class IQDisplayController extends DefaultController implements Activateab
 		return ready;
 	}
 	
+	public boolean isClosed() {
+		if(qticomp == null) return true;
+		AssessmentInstance ai = qticomp.getAssessmentInstance();
+		return ai.isClosed();
+	}	
 
 	private void updateQuestionProgressDisplay (AssessmentInstance ai) {