MissingRecordAwareHSSFListener listener = new MissingRecordAwareHSSFListener(mockListen);
req.addListenerForAllRecords(listener);
POIFSFileSystem fs = new POIFSFileSystem(new FileInputStream(f));
HSSFEventFactory factory = new HSSFEventFactory();
factory.processWorkbookEvents(req, fs);
// Check we got the dummy records
Record[] r = (Record[])
mockListen.records.toArray(new Record[mockListen.records.size()]);