ceph/src/boost/libs/leaf/test/preload_nested_success_exception_test.cpp

   1 // Copyright (c) 2018-2020 Emil Dotchevski and Reverge Studios, Inc.
   2
   3 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   4 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 #include <boost/leaf/detail/config.hpp>
   7 #ifdef BOOST_LEAF_NO_EXCEPTIONS
   8
   9 #include <iostream>
  10
  11 int main()
  12 {
  13     std::cout << "Unit test not applicable." << std::endl;
  14     return 0;
  15 }
  16
  17 #else
  18
  19 #include <boost/leaf/on_error.hpp>
  20 #include <boost/leaf/handle_errors.hpp>
  21 #include "lightweight_test.hpp"
  22
  23 namespace leaf = boost::leaf;
  24
  25 struct info { int value; };
  26
  27 void g1()
  28 {
  29     auto load = leaf::on_error( info{1} );
  30 }
  31
  32 void g2()
  33 {
  34     throw std::exception();
  35 }
  36
  37 void f()
  38 {
  39     auto load = leaf::on_error( info{2} );
  40     g1();
  41     g2();
  42 }
  43
  44 int main()
  45 {
  46     int r = leaf::try_catch(
  47         []
  48         {
  49             f();
  50             return 0;
  51         },
  52         []( info x )
  53         {
  54             BOOST_TEST_EQ(x.value, 2);
  55             return 1;
  56         },
  57         []
  58         {
  59             return 2;
  60          } );
  61     BOOST_TEST_EQ(r, 1);
  62
  63     return boost::report_errors();
  64 }
  65
  66 #endif