code: @Test public void testAll() throws Exception {
    ChannelBuffer buf=ChannelBuffers.dynamicBuffer();
    try {
      new ChannelBufferOutputStream(null);
      fail();
    }
   catch (  NullPointerException e) {
    }
    ChannelBufferOutputStream out=new ChannelBufferOutputStream(buf);
    assertSame(buf,out.buffer());
    out.write(new byte[0]);
    out.write(new byte[]{1,2,3,4});
    out.write(new byte[]{1,3,3,4},0,0);
    out.close();
    try {
      new ChannelBufferInputStream(null);
      fail();
    }
   catch (  NullPointerException e) {
    }
    try {
      new ChannelBufferInputStream(null,0);
      fail();
    }
   catch (  NullPointerException e) {
    }
    try {
      new ChannelBufferInputStream(buf,-1);
    }
   catch (  IllegalArgumentException e) {
    }
    try {
      new ChannelBufferInputStream(buf,buf.capacity() + 1);
    }
   catch (  IndexOutOfBoundsException e) {
    }
    ChannelBufferInputStream in=new ChannelBufferInputStream(buf);
    assertTrue(in.markSupported());
    in.mark(Integer.MAX_VALUE);
    assertEquals(buf.writerIndex(),in.skip(Long.MAX_VALUE));
    assertFalse(buf.readable());
    in.reset();
    assertEquals(0,buf.readerIndex());
    assertEquals(4,in.skip(4));
    assertEquals(4,buf.readerIndex());
    in.reset();
    byte[] tmp=new byte[13];
    in.read(tmp);
    assertEquals(1,tmp[0]);
    assertEquals(2,tmp[1]);
    assertEquals(3,tmp[2]);
    assertEquals(4,tmp[3]);
    assertEquals(-1,in.read());
    assertEquals(-1,in.read(tmp));
    in.close();
    assertEquals(buf.readerIndex(),in.readBytes());
  }
  