code: @Test public void testDecodeCheckCharacter() throws Exception {
    String path="test/data/blackbox/rssexpanded-1/3.png";
    File file=new File(path);
    if (!file.exists()) {
      file=new File("core",path);
    }
    BufferedImage image=ImageIO.read(file);
    BinaryBitmap binaryMap=new BinaryBitmap(new GlobalHistogramBinarizer(new BufferedImageLuminanceSource(image)));
    BitArray row=binaryMap.getBlackRow(binaryMap.getHeight() / 2,null);
    int[] startEnd={145,243};
    int value=0;
    FinderPattern finderPatternA1=new FinderPattern(value,startEnd,startEnd[0],startEnd[1],image.getHeight() / 2);
    RSSExpandedReader rssExpandedReader=new RSSExpandedReader();
    DataCharacter dataCharacter=rssExpandedReader.decodeDataCharacter(row,finderPatternA1,true,true);
    assertEquals(98,dataCharacter.getValue());
  }
  