ceph/src/boost/libs/contract/test/function/throwing_post.cpp

   1
   2 // Copyright (C) 2008-2018 Lorenzo Caminiti
   3 // Distributed under the Boost Software License, Version 1.0 (see accompanying
   4 // file LICENSE_1_0.txt or a copy at http://www.boost.org/LICENSE_1_0.txt).
   5 // See: http://www.boost.org/doc/libs/release/libs/contract/doc/html/index.html
   6
   7 // Test throw from free function .post().
   8
   9 #include "../detail/oteststream.hpp"
  10 #include <boost/contract/function.hpp>
  11 #include <boost/contract/check.hpp>
  12 #include <boost/detail/lightweight_test.hpp>
  13 #include <sstream>
  14
  15 boost::contract::test::detail::oteststream out;
  16
  17 struct err {}; // Global decl so visible in MSVC10 lambdas.
  18
  19 void f() {
  20     boost::contract::check c = boost::contract::function()
  21         .precondition([] { out << "f::pre" << std::endl; })
  22         .old([] { out << "f::old" << std::endl; })
  23         .postcondition([] {
  24             out << "f::post" << std::endl;
  25             throw err(); // Test this throws.
  26         })
  27         .except([] { out << "f::except" << std::endl; })
  28     ;
  29     out << "f::body" << std::endl;
  30 }
  31
  32 int main() {
  33     std::ostringstream ok;
  34
  35     boost::contract::set_postcondition_failure(
  36             [] (boost::contract::from) { throw; });
  37
  38     try {
  39         out.str("");
  40         f();
  41         #ifndef BOOST_CONTRACT_NO_POSTCONDITIONS
  42                 BOOST_TEST(false);
  43             } catch(err const&) {
  44         #endif
  45         ok.str(""); ok << "" // Suppress a warning.
  46             #ifndef BOOST_CONTRACT_NO_PRECONDITIONS
  47                 << "f::pre" << std::endl
  48             #endif
  49             #ifndef BOOST_CONTRACT_NO_OLDS
  50                 << "f::old" << std::endl
  51             #endif
  52             << "f::body" << std::endl
  53             #ifndef BOOST_CONTRACT_NO_POSTCONDITIONS
  54                 << "f::post" << std::endl // Test this threw.
  55             #endif
  56         ;
  57         BOOST_TEST(out.eq(ok.str()));
  58     } catch(...) { BOOST_TEST(false); }
  59
  60     return boost::report_errors();
  61 }
  62