ceph/src/boost/libs/system/test/constexpr_test.cpp

   1
   2 // Copyright 2018 Peter Dimov.
   3 // Distributed under the Boost Software License, Version 1.0.
   4
   5 #include <boost/system/error_code.hpp>
   6 #include <boost/core/lightweight_test.hpp>
   7 #include <boost/config/pragma_message.hpp>
   8 #include <boost/static_assert.hpp>
   9 #include <boost/config.hpp>
  10 #include <boost/config/workaround.hpp>
  11
  12 #if !defined(BOOST_SYSTEM_HAS_CONSTEXPR)
  13
  14 BOOST_PRAGMA_MESSAGE("Skipping constexpr test, BOOST_SYSTEM_HAS_CONSTEXPR isn't defined")
  15 int main() {}
  16
  17 #else
  18
  19 using namespace boost::system;
  20
  21 constexpr error_code e1( 1, system_category() );
  22
  23 BOOST_STATIC_ASSERT( e1.value() == 1 );
  24 BOOST_STATIC_ASSERT( e1.category() == system_category() );
  25 BOOST_STATIC_ASSERT( e1 );
  26 BOOST_STATIC_ASSERT( e1 == e1 );
  27
  28 constexpr error_code e2( 2, generic_category() );
  29
  30 BOOST_STATIC_ASSERT( e2.value() == 2 );
  31 BOOST_STATIC_ASSERT( e2.category() == generic_category() );
  32 BOOST_STATIC_ASSERT( e2 );
  33 BOOST_STATIC_ASSERT( e2 == e2 );
  34
  35 #if !BOOST_WORKAROUND(BOOST_GCC, < 80200)
  36
  37 BOOST_STATIC_ASSERT( e1 != e2 );
  38
  39 #endif
  40
  41 constexpr error_code e3;
  42
  43 BOOST_STATIC_ASSERT( e3.value() == 0 );
  44 BOOST_STATIC_ASSERT( e3.category() == system_category() );
  45 BOOST_STATIC_ASSERT( !e3 );
  46 BOOST_STATIC_ASSERT( e3 == e3 );
  47
  48 #if !BOOST_WORKAROUND(BOOST_GCC, < 80200)
  49
  50 BOOST_STATIC_ASSERT( e1 != e3 );
  51
  52 #endif
  53
  54 int main()
  55 {
  56     error_code e1_( 1, system_category() );
  57     BOOST_TEST_EQ( e1, e1_ );
  58
  59     error_code e2_( 2, generic_category() );
  60     BOOST_TEST_EQ( e2, e2_ );
  61
  62     error_code e3_;
  63     BOOST_TEST_EQ( e3, e3_ );
  64
  65     return boost::report_errors();
  66 }
  67
  68 #endif