content: package com.alibaba.json.bvt.parser;
  
  import java.nio.ByteBuffer;
  import java.nio.CharBuffer;
  
  import junit.framework.Assert;
  import junit.framework.TestCase;
  
  import com.alibaba.fastjson.util.IOUtils;
  import com.alibaba.fastjson.util.ThreadLocalCache;
  import com.alibaba.fastjson.util.UTF8Decoder;
  
  public class TestUTF8_3 extends TestCase {
  
      public void test_error_0() throws Exception {
          byte[] bytes = decodeHex("C2FF".toCharArray());
  
          UTF8Decoder charsetDecoder = new UTF8Decoder();
          int scaleLength = (int) (bytes.length * (double) charsetDecoder.maxCharsPerByte());
          char[] chars = ThreadLocalCache.getChars(scaleLength);
  
          CharBuffer charBuffer = CharBuffer.wrap(chars);
  
          Exception error = null;
          try {
              IOUtils.decode(charsetDecoder, ByteBuffer.wrap(bytes), charBuffer);
          } catch (Exception ex) {
              error = ex;
          }
          Assert.assertNotNull(error);
      }
      
      public void test_error_2() throws Exception {
          byte[] bytes = decodeHex("F0A4ADFF".toCharArray());
  
          UTF8Decoder charsetDecoder = new UTF8Decoder();
          int scaleLength = (int) (bytes.length * (double) charsetDecoder.maxCharsPerByte());
          char[] chars = ThreadLocalCache.getChars(scaleLength);
  
          CharBuffer charBuffer = CharBuffer.wrap(chars);
  
          Exception error = null;
          try {
              IOUtils.decode(charsetDecoder, ByteBuffer.wrap(bytes), charBuffer);
          } catch (Exception ex) {
              error = ex;
          }
          Assert.assertNotNull(error);
      }
      
      public void test_error_3() throws Exception {
          byte[] bytes = decodeHex("E280FF".toCharArray());
  
          UTF8Decoder charsetDecoder = new UTF8Decoder();
          int scaleLength = (int) (bytes.length * (double) charsetDecoder.maxCharsPerByte());
          char[] chars = ThreadLocalCache.getChars(scaleLength);
  
          CharBuffer charBuffer = CharBuffer.wrap(chars);
  
          Exception error = null;
          try {
              IOUtils.decode(charsetDecoder, ByteBuffer.wrap(bytes), charBuffer);
          } catch (Exception ex) {
              error = ex;
          }
          Assert.assertNotNull(error);
      }
      
      public void test_error_4() throws Exception {
          byte[] bytes = decodeHex("80".toCharArray());
          
          UTF8Decoder charsetDecoder = new UTF8Decoder();
          int scaleLength = (int) (bytes.length * (double) charsetDecoder.maxCharsPerByte());
          char[] chars = ThreadLocalCache.getChars(scaleLength);
          
          CharBuffer charBuffer = CharBuffer.wrap(chars);
          
          Exception error = null;
          try {
              IOUtils.decode(charsetDecoder, ByteBuffer.wrap(bytes), charBuffer);
          } catch (Exception ex) {
              error = ex;
          }
          Assert.assertNotNull(error);
      }
      
      public void test_error_5() throws Exception {
          byte[] bytes = decodeHex("FBBBF0".toCharArray());
          
          UTF8Decoder charsetDecoder = new UTF8Decoder();
          int scaleLength = (int) (bytes.length * (double) charsetDecoder.maxCharsPerByte());
          char[] chars = ThreadLocalCache.getChars(scaleLength);
          
          CharBuffer charBuffer = CharBuffer.wrap(chars);
          
          Exception error = null;
          try {
              IOUtils.decode(charsetDecoder, ByteBuffer.wrap(bytes), charBuffer);
          } catch (Exception ex) {
              error = ex;
          }
          Assert.assertNotNull(error);
      }
      
      public void test_error_6() throws Exception {
          byte[] bytes = decodeHex("FCBBBF".toCharArray());
          
          UTF8Decoder charsetDecoder = new UTF8Decoder();
          int scaleLength = (int) (bytes.length * (double) charsetDecoder.maxCharsPerByte());
          char[] chars = ThreadLocalCache.getChars(scaleLength);
          
          CharBuffer charBuffer = CharBuffer.wrap(chars);
          
          Exception error = null;
          try {
              IOUtils.decode(charsetDecoder, ByteBuffer.wrap(bytes), charBuffer);
          } catch (Exception ex) {
              error = ex;
          }
          Assert.assertNotNull(error);
      }
      
      public void test_error_7() throws Exception {
          byte[] bytes = decodeHex("F1808080".toCharArray());
          
          UTF8Decoder charsetDecoder = new UTF8Decoder();
          char[] chars = new char[1];
          
          CharBuffer charBuffer = CharBuffer.wrap(chars);
          
          Exception error = null;
          try {
              IOUtils.decode(charsetDecoder, ByteBuffer.wrap(bytes), charBuffer);
          } catch (Exception ex) {
              error = ex;
          }
          Assert.assertNotNull(error);
      }
      
      public void test_error_8() throws Exception {
          byte[] bytes = decodeHex("E0B0B0E0B0B0".toCharArray());
          
          UTF8Decoder charsetDecoder = new UTF8Decoder();
          char[] chars = new char[1];
          
          CharBuffer charBuffer = CharBuffer.wrap(chars);
          
          Exception error = null;
          try {
              IOUtils.decode(charsetDecoder, ByteBuffer.wrap(bytes), charBuffer);
          } catch (Exception ex) {
              error = ex;
          }
          Assert.assertNotNull(error);
      }
      
      public void test_error_9() throws Exception {
          byte[] bytes = decodeHex("C0B0".toCharArray());
          
          UTF8Decoder charsetDecoder = new UTF8Decoder();
          char[] chars = new char[1];
          
          CharBuffer charBuffer = CharBuffer.wrap(chars);
          
          Exception error = null;
          try {
              IOUtils.decode(charsetDecoder, ByteBuffer.wrap(bytes), charBuffer);
          } catch (Exception ex) {
              error = ex;
          }
          Assert.assertNotNull(error);
      }
  
  
      public void f_test_utf_1() throws Exception {
          byte[] bytes = decodeHex("C2FF".toCharArray());
          String content = new String(bytes, "UTF-8");
  
          UTF8Decoder charsetDecoder = new UTF8Decoder();
          int scaleLength = (int) (bytes.length * (double) charsetDecoder.maxCharsPerByte());
          char[] chars = ThreadLocalCache.getChars(scaleLength);
  
          CharBuffer charBuffer = CharBuffer.wrap(chars);
  
          IOUtils.decode(charsetDecoder, ByteBuffer.wrap(bytes), charBuffer);
          charsetDecoder.decode(ByteBuffer.wrap(bytes), charBuffer, true);
  
          int position = charBuffer.position();
          Assert.assertEquals(content, new String(chars, 0, position));
      }
  
      public static byte[] decodeHex(char[] data) throws Exception {
  
          int len = data.length;
  
          if ((len & 0x01) != 0) {
              throw new Exception("Odd number of characters.");
          }
  
          byte[] out = new byte[len >> 1];
  
          // two characters form the hex value.
          for (int i = 0, j = 0; j < len; i++) {
              int f = toDigit(data[j], j) << 4;
              j++;
              f = f | toDigit(data[j], j);
              j++;
              out[i] = (byte) (f & 0xFF);
          }
  
          return out;
      }
  
      protected static int toDigit(char ch, int index) throws Exception {
          int digit = Character.digit(ch, 16);
          if (digit == -1) {
              throw new Exception("Illegal hexadecimal character " + ch + " at index " + index);
          }
          return digit;
      }
  }
  