PreparerException extends TilesException { public PreparerException() { super(); } PreparerException();  PreparerException(Throwable e);  PreparerException(String message);  PreparerException(String message, Throwable e);   }
@Test public void testPreparerException() { PreparerException exception = new PreparerException(); assertNull(exception.getMessage()); assertNull(exception.getCause()); }