SpreadsheetReadException extends Exception { public SpreadsheetReadException() { } SpreadsheetReadException();  SpreadsheetReadException(String message);  SpreadsheetReadException(Throwable cause);  SpreadsheetReadException(String message, Throwable cause);   }
@Test public void testSpreadsheetReadException() { SpreadsheetReadException spreadsheetReadException = new SpreadsheetReadException(); assertNull(spreadsheetReadException.getMessage()); assertNull(spreadsheetReadException.getCause()); }