code: @Test public void testCodingCompleted() throws Exception {
    ByteArrayOutputStream baos=new ByteArrayOutputStream();
    WritableByteChannel channel=newChannel(baos);
    HttpParams params=new BasicHttpParams();
    SessionOutputBuffer outbuf=new SessionOutputBufferImpl(1024,128,params);
    HttpTransportMetricsImpl metrics=new HttpTransportMetricsImpl();
    ChunkEncoder encoder=new ChunkEncoder(channel,outbuf,metrics);
    encoder.write(wrap("12345"));
    encoder.write(wrap("678"));
    encoder.write(wrap("90"));
    encoder.complete();
    try {
      encoder.write(wrap("more stuff"));
      Assert.fail("IllegalStateException should have been thrown");
    }
   catch (  IllegalStateException ex) {
    }
    try {
      encoder.complete();
      Assert.fail("IllegalStateException should have been thrown");
    }
   catch (  IllegalStateException ex) {
    }
  }
  