Beispiel #1
0
 /**
  * Generates the codewords expectation file for the specified symbol.
  *
  * @param symbol the symbol to generate codewords for
  * @throws IOException if there is any I/O error
  */
 private void generateCodewordsExpectationFile(Symbol symbol) throws IOException {
   if (!codewordsFile.exists()) {
     PrintWriter writer = new PrintWriter(codewordsFile);
     try {
       int[] codewords = symbol.getCodewords();
       for (int codeword : codewords) {
         writer.println(codeword);
       }
     } catch (UnsupportedOperationException e) {
       for (String pattern : symbol.pattern) {
         writer.println(pattern);
       }
     }
     writer.close();
   }
 }
Beispiel #2
0
  /**
   * Verifies that the specified symbol was encoded and rendered in a way that matches expectations.
   *
   * @param symbol the symbol to check
   * @throws IOException if there is any I/O error
   * @throws ReaderException if ZXing has an issue decoding the barcode image
   */
  private void verifySuccess(Symbol symbol) throws IOException, ReaderException {

    assertEquals("error message", "", symbol.error_msg);

    List<String> expectedList = Files.readAllLines(codewordsFile.toPath(), UTF_8);

    try {
      // try to verify codewords
      int[] actualCodewords = symbol.getCodewords();
      assertEquals(expectedList.size(), actualCodewords.length);
      for (int i = 0; i < actualCodewords.length; i++) {
        int expected = getInt(expectedList.get(i));
        int actual = actualCodewords[i];
        assertEquals("at codeword index " + i, expected, actual);
      }
    } catch (UnsupportedOperationException e) {
      // codewords aren't supported, try to verify patterns
      String[] actualPatterns = symbol.pattern;
      assertEquals(expectedList.size(), actualPatterns.length);
      for (int i = 0; i < actualPatterns.length; i++) {
        String expected = expectedList.get(i);
        String actual = actualPatterns[i];
        assertEquals("at pattern index " + i, expected, actual);
      }
    }

    // make sure the barcode images match
    BufferedImage expected = ImageIO.read(pngFile);
    BufferedImage actual = draw(symbol);
    assertEqual(expected, actual);

    // if possible, ensure an independent third party (ZXing) can read the generated barcode and
    // agrees on what it represents
    Reader zxingReader = findReader(symbol);
    if (zxingReader != null) {
      LuminanceSource source = new BufferedImageLuminanceSource(expected);
      BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
      Map<DecodeHintType, Boolean> hints =
          Collections.singletonMap(DecodeHintType.PURE_BARCODE, Boolean.TRUE);
      Result result = zxingReader.decode(bitmap, hints);
      String zxingData = removeChecksum(result.getText(), symbol);
      String okapiData = removeStartStopChars(symbol.getContent(), symbol);
      assertEquals(okapiData, zxingData);
    }
  }