@Test public void testCreateFileRecord(){
  HyperlinkRecord link=new HyperlinkRecord();
  link.newFileLink();
  link.setFirstRow((short)0);
  link.setLastRow((short)0);
  link.setLabel("file");
  link.setShortFilename("link1.xls");
  byte[] tmp=link.serialize();
  byte[] ser=new byte[tmp.length - 4];
  System.arraycopy(tmp,4,ser,0,ser.length);
  assertEquals(data2.length,ser.length);
  assertArrayEquals(data2,ser);
}