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Add test/result_value_construct5.cpp. Refs #104.

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Peter Dimov
2023-01-22 01:58:29 +02:00
parent f32ffcba48
commit 805b260a7a
3 changed files with 84 additions and 0 deletions
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1
test/CMakeLists.txt
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@ -162,3 +162,4 @@ boost_test(TYPE run SOURCES result_error_construct3.cpp)
boost_test(TYPE run SOURCES result_emplace.cpp)
boost_test(TYPE run SOURCES result_error_construct4.cpp)
boost_test(TYPE run SOURCES result_value_construct4.cpp)
boost_test(TYPE run SOURCES result_value_construct5.cpp)

1
test/Jamfile.v2
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@ -192,3 +192,4 @@ run result_error_construct3.cpp : : : $(CPP11) ;
run result_emplace.cpp : : : $(CPP11) ;
run result_error_construct4.cpp : : : $(CPP11) ;
run result_value_construct4.cpp : : : $(CPP11) ;
run result_value_construct5.cpp : : : $(CPP11) ;

82
test/result_value_construct5.cpp Normal file
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@ -0,0 +1,82 @@
// Copyright 2023 Peter Dimov.
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/system/result.hpp>
#include <boost/core/lightweight_test.hpp>
#include <boost/core/lightweight_test_trait.hpp>
#include <utility>
#include <type_traits>
using namespace boost::system;
// Tricky mixed construction cases
// https://github.com/boostorg/system/issues/104
// https://brevzin.github.io//c++/2023/01/18/optional-construction/
template<class R1, class R2> void test()
{
{
R1 r1( make_error_code( errc::invalid_argument ) );
R2 r2( r1 );
BOOST_TEST( !r2.has_value() );
}
{
R1 r1( 0 );
R2 r2( r1 );
BOOST_TEST( r2.has_value() ) && BOOST_TEST_EQ( r2.value(), false );
}
{
R1 r1( 1 );
R2 r2( r1 );
BOOST_TEST( r2.has_value() ) && BOOST_TEST_EQ( r2.value(), true );
}
{
R1 r1( make_error_code( errc::invalid_argument ) );
R2 r2( std::move( r1 ) );
BOOST_TEST( !r2.has_value() );
}
{
R1 r1( 0 );
R2 r2( std::move( r1 ) );
BOOST_TEST( r2.has_value() ) && BOOST_TEST_EQ( r2.value(), false );
}
{
R1 r1( 1 );
R2 r2( std::move( r1 ) );
BOOST_TEST( r2.has_value() ) && BOOST_TEST_EQ( r2.value(), true );
}
}
struct X
{
};
int main()
{
test< result<int>, result<bool> >();
test< result<int> const, result<bool> >();
BOOST_TEST_TRAIT_FALSE((std::is_constructible<result<bool>, result<X>&>));
BOOST_TEST_TRAIT_FALSE((std::is_constructible<result<bool>, result<X> const&>));
BOOST_TEST_TRAIT_FALSE((std::is_constructible<result<bool>, result<X>&&>));
BOOST_TEST_TRAIT_FALSE((std::is_constructible<result<bool>, result<X> const&&>));
BOOST_TEST_TRAIT_FALSE((std::is_constructible<result<bool const>, result<X>&>));
BOOST_TEST_TRAIT_FALSE((std::is_constructible<result<bool const>, result<X> const&>));
BOOST_TEST_TRAIT_FALSE((std::is_constructible<result<bool const>, result<X>&&>));
BOOST_TEST_TRAIT_FALSE((std::is_constructible<result<bool const>, result<X> const&&>));
return boost::report_errors();
}