214     }
 215 
 216     private static Object getListener(Object bean, String fieldName) {
 217         try {
 218             Class clazz = bean.getClass();
 219             Field field = clazz.getDeclaredField(fieldName);
 220             field.setAccessible(true);
 221             return field.get(bean);
 222         } catch (Exception e) {
 223             e.printStackTrace();
 224         }
 225         return null;
 226     }
 227 
 228     private static List getObservableValueListeners(ObservableValue value) {
 229         ArrayList results = new ArrayList();
 230         results.addAll(ExpressionHelperUtility.getChangeListeners(value));
 231         results.addAll(ExpressionHelperUtility.getInvalidationListeners(value));
 232         return results;
 233     }
















 234 }

 214     }
 215 
 216     private static Object getListener(Object bean, String fieldName) {
 217         try {
 218             Class clazz = bean.getClass();
 219             Field field = clazz.getDeclaredField(fieldName);
 220             field.setAccessible(true);
 221             return field.get(bean);
 222         } catch (Exception e) {
 223             e.printStackTrace();
 224         }
 225         return null;
 226     }
 227 
 228     private static List getObservableValueListeners(ObservableValue value) {
 229         ArrayList results = new ArrayList();
 230         results.addAll(ExpressionHelperUtility.getChangeListeners(value));
 231         results.addAll(ExpressionHelperUtility.getInvalidationListeners(value));
 232         return results;
 233     }
 234 
 235     // methods for temporary setting UncaughtExceptionHandler
 236     public static Thread.UncaughtExceptionHandler setHandler() {
 237         Thread.UncaughtExceptionHandler exceptionHandler = Thread.currentThread().getUncaughtExceptionHandler();
 238         Thread.currentThread().setUncaughtExceptionHandler((Thread t, Throwable e) -> {
 239             e.printStackTrace();
 240             throw new AssertionError(e);
 241         });
 242         return exceptionHandler;
 243     }
 244 
 245     // the test should call this method in the finally block to ensure
 246     // that the handler is reset
 247     public static void resetHandler(Thread.UncaughtExceptionHandler exceptionHandler) {
 248         Thread.currentThread().setUncaughtExceptionHandler(exceptionHandler);
 249     }
 250 }