libs/contract/test/specify/missing_check.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 missing contract check declaration gives run-time error.
   8
   9 struct err {};
  10 #ifndef BOOST_CONTRACT_ON_MISSING_CHECK_DECL
  11     #error "build must define ON_MISSING_CHECK_DECL=`{ throw err(); }`"
  12 #endif
  13
  14 #include <boost/contract/function.hpp>
  15 #include <boost/contract/check.hpp>
  16 #include <boost/detail/lightweight_test.hpp>
  17
  18 int main() {
  19     boost::contract::check c = boost::contract::function() // Test this is OK.
  20         .precondition([] {})
  21         .old([] {})
  22         .postcondition([] {})
  23     ;
  24
  25     try {
  26         boost::contract::function() // Test no `check c = ...` errors.
  27             .precondition([] {})
  28             .old([] {})
  29             .postcondition([] {})
  30         ;
  31         #if     !defined(BOOST_CONTRACT_NO_PRECONDITIONS) || \
  32                 !defined(BOOST_CONTRACT_NO_POSTCONDITIONS) || \
  33                 !defined(BOOST_CONTRACT_NO_INVARIANTS)
  34             BOOST_TEST(false); // Error, must throw.
  35         #endif
  36     } catch(err const&) {
  37         // OK, threw as expected.
  38     } catch(...) {
  39         BOOST_TEST(false); // Error, unexpected throw.
  40     }
  41     return boost::report_errors();
  42 }
  43