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Add test/variant_move_assign_cx

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Peter Dimov
2017-06-09 15:13:36 +03:00
parent 6545dc3d10
commit f216bb5c1f
2 changed files with 117 additions and 0 deletions
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1
test/Jamfile
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@ -42,6 +42,7 @@ run variant_copy_assign.cpp : : : $(REQ) ;
compile variant_copy_assign_cx.cpp : : : $(REQ) ;
run variant_move_assign.cpp : : : $(REQ) ;
compile variant_move_assign_cx.cpp : : : $(REQ) ;
run variant_value_assign.cpp : : : $(REQ) ;
compile variant_value_assign_cx.cpp : : : $(REQ) ;

116
test/variant_move_assign_cx.cpp Normal file
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@ -0,0 +1,116 @@
// Copyright 2017 Peter Dimov.
//
// Distributed under the Boost Software License, Version 1.0.
//
// See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt
#if !defined( __cpp_constexpr ) || __cpp_constexpr < 201603
// no constexpr lambda support
int main() {}
#else
#include <boost/variant2/variant.hpp>
#include <utility>
using namespace boost::variant2;
struct X
{
int v;
X() = default;
constexpr X( int v ): v( v ) {}
constexpr operator int() const { return v; }
};
struct Y
{
int v;
constexpr Y(): v() {}
constexpr Y( int v ): v( v ) {}
constexpr operator int() const { return v; }
};
enum E
{
v
};
#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
template<class V, class T, class A> constexpr T test( A&& a )
{
V v;
v = std::forward<A>(a);
return get<T>(v);
}
int main()
{
{
constexpr auto w = test<variant<int>, int>( variant<int>( 1 ) );
STATIC_ASSERT( w == 1 );
}
{
constexpr auto w = test<variant<X>, X>( variant<X>( 1 ) );
STATIC_ASSERT( w == 1 );
}
#if defined( BOOST_LIBSTDCXX_VERSION ) && BOOST_LIBSTDCXX_VERSION < 50000
#else
{
constexpr auto w = test<variant<Y>, Y>( variant<Y>( 1 ) );
STATIC_ASSERT( w == 1 );
}
#endif
{
constexpr auto w = test<variant<int, float>, int>( variant<int, float>( 1 ) );
STATIC_ASSERT( w == 1 );
}
{
constexpr auto w = test<variant<int, float>, float>( variant<int, float>( 3.0f ) );
STATIC_ASSERT( w == 3.0f );
}
{
constexpr auto w = test<variant<int, int, float>, float>( variant<int, int, float>( 3.0f ) );
STATIC_ASSERT( w == 3.0f );
}
{
constexpr auto w = test<variant<E, E, X>, X>( variant<E, E, X>( 1 ) );
STATIC_ASSERT( w == 1 );
}
{
constexpr auto w = test<variant<int, int, float, float, X>, X>( variant<int, int, float, float, X>( X(1) ) );
STATIC_ASSERT( w == 1 );
}
#if defined( BOOST_LIBSTDCXX_VERSION ) && BOOST_LIBSTDCXX_VERSION < 50000
#else
{
constexpr auto w = test<variant<E, E, Y>, Y>( variant<E, E, Y>( 1 ) );
STATIC_ASSERT( w == 1 );
}
{
constexpr auto w = test<variant<int, int, float, float, Y>, Y>( variant<int, int, float, float, Y>( Y(1) ) );
STATIC_ASSERT( w == 1 );
}
#endif
}
#endif // constexpr lambda support