ceph/src/boost/libs/asio/test/coroutine.cpp

   1 //
   2 // coroutine.cpp
   3 // ~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2017 Christopher M. Kohlhoff (chris at kohlhoff dot com)
   6 //
   7 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   9 //
  10
  11 // Disable autolinking for unit tests.
  12 #if !defined(BOOST_ALL_NO_LIB)
  13 #define BOOST_ALL_NO_LIB 1
  14 #endif // !defined(BOOST_ALL_NO_LIB)
  15
  16 // Test that header file is self-contained.
  17 #include <boost/asio/coroutine.hpp>
  18
  19 #include "unit_test.hpp"
  20
  21 // Must come after all other headers.
  22 #include <boost/asio/yield.hpp>
  23
  24 //------------------------------------------------------------------------------
  25
  26 // Coroutine completes via yield break.
  27
  28 void yield_break_coro(boost::asio::coroutine& coro)
  29 {
  30   reenter (coro)
  31   {
  32     yield return;
  33     yield break;
  34   }
  35 }
  36
  37 void yield_break_test()
  38 {
  39   boost::asio::coroutine coro;
  40   BOOST_ASIO_CHECK(!coro.is_complete());
  41   yield_break_coro(coro);
  42   BOOST_ASIO_CHECK(!coro.is_complete());
  43   yield_break_coro(coro);
  44   BOOST_ASIO_CHECK(coro.is_complete());
  45 }
  46
  47 //------------------------------------------------------------------------------
  48
  49 // Coroutine completes via return.
  50
  51 void return_coro(boost::asio::coroutine& coro)
  52 {
  53   reenter (coro)
  54   {
  55     return;
  56   }
  57 }
  58
  59 void return_test()
  60 {
  61   boost::asio::coroutine coro;
  62   return_coro(coro);
  63   BOOST_ASIO_CHECK(coro.is_complete());
  64 }
  65
  66 //------------------------------------------------------------------------------
  67
  68 // Coroutine completes via exception.
  69
  70 void exception_coro(boost::asio::coroutine& coro)
  71 {
  72   reenter (coro)
  73   {
  74     throw 1;
  75   }
  76 }
  77
  78 void exception_test()
  79 {
  80   boost::asio::coroutine coro;
  81   try { exception_coro(coro); } catch (int) {}
  82   BOOST_ASIO_CHECK(coro.is_complete());
  83 }
  84
  85 //------------------------------------------------------------------------------
  86
  87 // Coroutine completes by falling off the end.
  88
  89 void fall_off_end_coro(boost::asio::coroutine& coro)
  90 {
  91   reenter (coro)
  92   {
  93   }
  94 }
  95
  96 void fall_off_end_test()
  97 {
  98   boost::asio::coroutine coro;
  99   fall_off_end_coro(coro);
 100   BOOST_ASIO_CHECK(coro.is_complete());
 101 }
 102
 103 //------------------------------------------------------------------------------
 104
 105 BOOST_ASIO_TEST_SUITE
 106 (
 107   "coroutine",
 108   BOOST_ASIO_TEST_CASE(yield_break_test)
 109   BOOST_ASIO_TEST_CASE(return_test)
 110   BOOST_ASIO_TEST_CASE(exception_test)
 111   BOOST_ASIO_TEST_CASE(fall_off_end_test)
 112 )