139 lines
3.4 KiB
C++
139 lines
3.4 KiB
C++
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// Copyright 2017 Peter Dimov.
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//
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// Distributed under the Boost Software License, Version 1.0.
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//
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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#include <boost/variant2/variant.hpp>
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#include <boost/core/lightweight_test.hpp>
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#include <boost/core/lightweight_test_trait.hpp>
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#include <type_traits>
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#include <utility>
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#include <string>
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using namespace boost::variant2;
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struct X
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{
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X() = default;
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X( in_place_index_t<0> ) = delete;
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};
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int main()
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{
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{
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variant<int> v( in_place_index_t<0>{} );
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BOOST_TEST_EQ( v.index(), 0 );
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BOOST_TEST_EQ( get<0>(v), 0 );
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}
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{
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variant<X> v( in_place_index_t<0>{} );
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BOOST_TEST_EQ( v.index(), 0 );
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}
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{
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variant<int> v( in_place_index_t<0>{}, 1 );
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BOOST_TEST_EQ( v.index(), 0 );
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BOOST_TEST_EQ( get<0>(v), 1 );
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}
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{
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variant<int, float> v( in_place_index_t<0>{} );
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BOOST_TEST_EQ( v.index(), 0 );
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BOOST_TEST_EQ( get<0>(v), 0 );
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}
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{
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variant<int, float> v( in_place_index_t<0>{}, 1 );
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BOOST_TEST_EQ( v.index(), 0 );
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BOOST_TEST_EQ( get<0>(v), 1 );
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}
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{
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variant<int, float> v( in_place_index_t<1>{} );
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BOOST_TEST_EQ( v.index(), 1 );
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BOOST_TEST_EQ( get<1>(v), 0 );
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}
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{
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variant<int, float> v( in_place_index_t<1>{}, 3.14f );
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BOOST_TEST_EQ( v.index(), 1 );
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BOOST_TEST_EQ( get<1>(v), 3.14f );
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}
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{
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variant<int, int, float, float, std::string, std::string> v( in_place_index_t<0>{}, 1 );
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BOOST_TEST_EQ( v.index(), 0 );
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BOOST_TEST_EQ( get<0>(v), 1 );
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}
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{
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variant<int, int, float, float, std::string, std::string> v( in_place_index_t<1>{}, 1 );
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BOOST_TEST_EQ( v.index(), 1 );
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BOOST_TEST_EQ( get<1>(v), 1 );
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}
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{
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variant<int, int, float, float, std::string, std::string> v( in_place_index_t<2>{}, 3.14f );
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BOOST_TEST_EQ( v.index(), 2 );
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BOOST_TEST_EQ( get<2>(v), 3.14f );
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}
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{
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variant<int, int, float, float, std::string, std::string> v( in_place_index_t<3>{}, 3.14f );
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BOOST_TEST_EQ( v.index(), 3 );
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BOOST_TEST_EQ( get<3>(v), 3.14f );
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}
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{
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variant<int, int, float, float, std::string, std::string> v( in_place_index_t<4>{}, "text" );
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BOOST_TEST_EQ( v.index(), 4 );
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BOOST_TEST_EQ( get<4>(v), std::string("text") );
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}
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{
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variant<int, int, float, float, std::string, std::string> v( in_place_index_t<5>{}, "text" );
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BOOST_TEST_EQ( v.index(), 5 );
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BOOST_TEST_EQ( get<5>(v), std::string("text") );
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}
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{
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variant<int, int, float, float, std::string, std::string> v( in_place_index_t<5>{}, 4, 'a' );
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BOOST_TEST_EQ( v.index(), 5 );
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BOOST_TEST_EQ( get<5>(v), std::string( 4, 'a' ) );
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}
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{
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variant<int, int, float, float, std::string, std::string> v( in_place_index_t<4>{}, { 'a', 'b', 'c' } );
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BOOST_TEST_EQ( v.index(), 4 );
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BOOST_TEST_EQ( get<4>(v), (std::string{ 'a', 'b', 'c' }) );
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}
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{
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variant<int, int, float, float, std::string, std::string> v( in_place_index_t<5>{}, { 'a', 'b', 'c' }, std::allocator<char>() );
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BOOST_TEST_EQ( v.index(), 5 );
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BOOST_TEST_EQ( get<5>(v), (std::string{ 'a', 'b', 'c' }) );
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}
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return boost::report_errors();
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}
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