checkNotNull(toIgnore);
    return new Reader() {
      @Override
      public int read() throws IOException {
        int readChar;
        do {
          readChar = delegate.read();
        } while (readChar != -1 && toIgnore.indexOf((char) readChar) >= 0);
        return readChar;
      }

      @Override
      public int read(char[] cbuf, int off, int len) throws IOException {

    assertEquals("Kilroy was here", in.readUTF());
  }

  public void testNewDataInput_readChar() {
    byte[] data = "qed".getBytes(Charsets.UTF_16BE);
    ByteArrayDataInput in = ByteStreams.newDataInput(data);
    assertEquals('q', in.readChar());
    assertEquals('e', in.readChar());
    assertEquals('d', in.readChar());
  }

  public void testNewDataInput_readUnsignedShort() {

    }


    public void readFully ( byte[] b, int off, int len ) throws IOException {
        this.dis.readFully(b, off, len);
    }


    public char readChar () throws IOException {
        align(2);
        return this.dis.readChar();
    }


    public byte readByte () throws IOException {
        return this.dis.readByte();
    }


    public short readShort () throws IOException {

    assertEquals("Kilroy was here", in.readUTF());
  }

  public void testNewDataInput_readChar() {
    byte[] data = "qed".getBytes(Charsets.UTF_16BE);
    ByteArrayDataInput in = ByteStreams.newDataInput(data);
    assertEquals('q', in.readChar());
    assertEquals('e', in.readChar());
    assertEquals('d', in.readChar());
  }

  public void testNewDataInput_readUnsignedShort() {

  @Override
  short readShort();

  @CanIgnoreReturnValue // to skip some bytes
  @Override
  int readUnsignedShort();

  @CanIgnoreReturnValue // to skip some bytes
  @Override
  char readChar();

  @CanIgnoreReturnValue // to skip some bytes
  @Override
  int readInt();

  @CanIgnoreReturnValue // to skip some bytes
  @Override
  long readLong();

  @CanIgnoreReturnValue // to skip some bytes

    assertEquals(false, in.readBoolean());
    assertEquals(100, in.readByte());
    assertEquals(-100, in.readByte());
    assertEquals(200, in.readUnsignedByte());
    assertEquals('\u6100', in.readChar());
    assertEquals(-12150, in.readShort());
    assertEquals(20675, in.readUnsignedShort());
    assertEquals(0xBEBAFECA, in.readInt());
    assertEquals(0xBEBAFECAEFBEADDEL, in.readLong());

  /**
   * Reads a char as specified by {@link DataInputStream#readChar()}, except using little-endian
   * byte order.
   *
   * @return the next two bytes of the input stream, interpreted as a {@code char} in little-endian
   *     byte order
   * @throws IOException if an I/O error occurs
   */
  @CanIgnoreReturnValue // to skip some bytes
  @Override
  public char readChar() throws IOException {
    return (char) readUnsignedShort();

    assertEquals(false, in.readBoolean());
    assertEquals(100, in.readByte());
    assertEquals(-100, in.readByte());
    assertEquals(200, in.readUnsignedByte());
    assertEquals('\u6100', in.readChar());
    assertEquals(-12150, in.readShort());
    assertEquals(20675, in.readUnsignedShort());
    assertEquals(0xBEBAFECA, in.readInt());
    assertEquals(0xBEBAFECAEFBEADDEL, in.readLong());

    assertEquals(false, in.readBoolean());
    assertEquals(100, in.readByte());
    assertEquals(-100, in.readByte());
    assertEquals(200, in.readUnsignedByte());
    assertEquals('\u6100', in.readChar());
    assertEquals(-12150, in.readShort());
    assertEquals(20675, in.readUnsignedShort());
    assertEquals(0xBEBAFECA, in.readInt());
    assertEquals(0xBEBAFECAEFBEADDEL, in.readLong());

    assertEquals(false, in.readBoolean());
    assertEquals(100, in.readByte());
    assertEquals(-100, in.readByte());
    assertEquals(200, in.readUnsignedByte());
    assertEquals('\u6100', in.readChar());
    assertEquals(-12150, in.readShort());
    assertEquals(20675, in.readUnsignedShort());
    assertEquals(0xBEBAFECA, in.readInt());
    assertEquals(0xBEBAFECAEFBEADDEL, in.readLong());