text: //
  // streambuf.cpp
  // ~~~~~~~~~~~~~
  //
  // Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
  //
  // Distributed under the Boost Software License, Version 1.0. (See accompanying
  // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  //
  
  // Disable autolinking for unit tests.
  #if !defined(BOOST_ALL_NO_LIB)
  #define BOOST_ALL_NO_LIB 1
  #endif // !defined(BOOST_ALL_NO_LIB)
  
  // Test that header file is self-contained.
  #include <boost/asio/streambuf.hpp>
  
  #include <boost/asio/buffer.hpp>
  #include "unit_test.hpp"
  
  void streambuf_test()
  {
    boost::asio::streambuf sb;
  
    sb.sputn("abcd", 4);
  
    BOOST_ASIO_CHECK(sb.size() == 4);
  
    for (int i = 0; i < 100; ++i)
    {
      sb.consume(3);
  
      BOOST_ASIO_CHECK(sb.size() == 1);
  
      char buf[1];
      sb.sgetn(buf, 1);
  
      BOOST_ASIO_CHECK(sb.size() == 0);
  
      sb.sputn("ab", 2);
  
      BOOST_ASIO_CHECK(sb.size() == 2);
  
      boost::asio::buffer_copy(sb.prepare(10), boost::asio::buffer("cd", 2));
      sb.commit(2);
  
      BOOST_ASIO_CHECK(sb.size() == 4);
    }
  
    BOOST_ASIO_CHECK(sb.size() == 4);
  
    sb.consume(4);
  
    BOOST_ASIO_CHECK(sb.size() == 0);
  }
  
  BOOST_ASIO_TEST_SUITE
  (
    "streambuf",
    BOOST_ASIO_TEST_CASE(streambuf_test)
  )
  