code: @Test public void testDecodeHttp() throws Exception {
    ByteBuf buf=Unpooled.wrappedBuffer(new byte[]{'G'});
    ChannelHandlerContext context=Mockito.mock(ChannelHandlerContext.class);
    ChannelPipeline pipeline=Mockito.mock(ChannelPipeline.class);
    Mockito.when(context.pipeline()).thenReturn(pipeline);
    QosProcessHandler handler=new QosProcessHandler("welcome",false);
    handler.decode(context,buf,Collections.emptyList());
    verify(pipeline).addLast(any(HttpServerCodec.class));
    verify(pipeline).addLast(any(HttpObjectAggregator.class));
    verify(pipeline).addLast(any(HttpProcessHandler.class));
    verify(pipeline).remove(handler);
  }
  