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// Copyright 2017, 2021 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 <iosfwd>
#include <cerrno>
using namespace boost::system;
struct X
{
static int instances;
int v_;
explicit X( int v ): v_( v ) { ++instances; }
X( X const& r ) = delete;
X( X&& r ): v_( r.v_ ) { r.v_ = 0; ++instances; }
X& operator=( X const& ) = delete;
X& operator=( X&& r )
{
v_ = r.v_;
r.v_ = 0;
return *this;
}
~X() { --instances; }
};
bool operator==( X const & x1, X const & x2 )
{
return x1.v_ == x2.v_;
}
std::ostream& operator<<( std::ostream& os, X const & x )
{
os << "X:" << x.v_;
return os;
}
int X::instances = 0;
struct Y
{
static int instances;
int v_;
explicit Y( int v = 0 ): v_( v ) { ++instances; }
Y( Y const& r ) noexcept: v_( r.v_ ) { ++instances; }
Y( Y&& r ) noexcept: v_( r.v_ ) { r.v_ = 0; ++instances; }
Y& operator=( Y const& ) = default;
Y& operator=( Y&& r )
{
v_ = r.v_;
r.v_ = 0;
return *this;
}
~Y() { --instances; }
};
bool operator==( Y const & y1, Y const & y2 )
{
return y1.v_ == y2.v_;
}
std::ostream& operator<<( std::ostream& os, Y const & y )
{
os << "Y:" << y.v_;
return os;
}
int Y::instances = 0;
int main()
{
{
result<int> r1( 1 );
result<int> r2( 2 );
BOOST_TEST_EQ( r1, r1 );
BOOST_TEST_NE( r1, r2 );
}
{
result<int> r1( 1, generic_category() );
result<int> r2( 2, generic_category() );
BOOST_TEST_EQ( r1, r1 );
BOOST_TEST_NE( r1, r2 );
}
{
result<int> r1( 1 );
result<int> r2( 2, generic_category() );
BOOST_TEST_EQ( r1, r1 );
BOOST_TEST_NE( r1, r2 );
}
{
result<X, Y> r1( in_place_value, 1 );
result<X, Y> r2( in_place_value, 2 );
BOOST_TEST_EQ( r1, r1 );
BOOST_TEST_NE( r1, r2 );
}
{
result<X, Y> r1( in_place_error, 1 );
result<X, Y> r2( in_place_error, 2 );
BOOST_TEST_EQ( r1, r1 );
BOOST_TEST_NE( r1, r2 );
}
{
result<X, Y> r1( in_place_value, 1 );
result<X, Y> r2( in_place_error, 2 );
BOOST_TEST_EQ( r1, r1 );
BOOST_TEST_NE( r1, r2 );
}
{
result<void> r1;
result<void> r2;
BOOST_TEST_EQ( r1, r1 );
BOOST_TEST_EQ( r1, r2 );
}
{
result<void> r1( 1, generic_category() );
result<void> r2( 2, generic_category() );
BOOST_TEST_EQ( r1, r1 );
BOOST_TEST_NE( r1, r2 );
}
return boost::report_errors();
}
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