ceph/src/boost/libs/pfr/test/compile-fail/pfr_review_test2.cpp

   1 // Copyright (c) 2020 Antony Polukhin
   2 // Copyright (c) 2020 Richard Hodges
   3 //
   4 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   5 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6
   7 // Test case from https://github.com/madmongo1/pfr_review/blob/master/pre-cxx20/test-2.cpp
   8
   9 #include <boost/pfr/functions_for.hpp>
  10
  11 #include <boost/utility/string_view.hpp>
  12
  13 #include <sstream>
  14 #include <string>
  15
  16 #include <boost/core/lightweight_test.hpp>
  17
  18 namespace the_wild {
  19     struct animal {
  20         std::string        name;
  21         boost::string_view temperament;
  22     };
  23
  24     // Error: std::hash not specialized for type
  25     // OR in C++14:
  26     // Error: animal is not constexpr initializable
  27     BOOST_PFR_FUNCTIONS_FOR(animal)
  28 } // namespace the_wild
  29
  30 const auto fido = the_wild::animal { "fido", "aloof" };
  31
  32 int main() {
  33     std::ostringstream oss;
  34     oss << fido;
  35
  36     BOOST_TEST_EQ(oss.str(), "{\"fido\", \"aloof\"}");
  37
  38     return boost::report_errors();
  39 }