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

   1 // Copyright 2018-2022 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/config.hpp>
   7
   8 #ifdef BOOST_LEAF_NO_EXCEPTIONS
   9
  10 #include <iostream>
  11
  12 int main()
  13 {
  14     std::cout << "Unit test not applicable." << std::endl;
  15     return 0;
  16 }
  17
  18 #else
  19
  20 #ifdef BOOST_LEAF_TEST_SINGLE_HEADER
  21 #   include "leaf.hpp"
  22 #else
  23 #   include <boost/leaf/on_error.hpp>
  24 #   include <boost/leaf/handle_errors.hpp>
  25 #endif
  26
  27 #include "lightweight_test.hpp"
  28
  29 namespace leaf = boost::leaf;
  30
  31 struct info { int value; };
  32
  33 void g1()
  34 {
  35     auto load = leaf::on_error( info{1} );
  36 }
  37
  38 void g2()
  39 {
  40     throw std::exception();
  41 }
  42
  43 void f()
  44 {
  45     auto load = leaf::on_error( info{2} );
  46     g1();
  47     g2();
  48 }
  49
  50 int main()
  51 {
  52     int r = leaf::try_catch(
  53         []
  54         {
  55             f();
  56             return 0;
  57         },
  58         []( info x )
  59         {
  60             BOOST_TEST_EQ(x.value, 2);
  61             return 1;
  62         },
  63         []
  64         {
  65             return 2;
  66          } );
  67     BOOST_TEST_EQ(r, 1);
  68
  69     return boost::report_errors();
  70 }
  71
  72 #endif