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Diffstat (limited to 'src/boost/libs/variant2/test/variant_swap.cpp')
| -rw-r--r-- | src/boost/libs/variant2/test/variant_swap.cpp | 259 |
1 files changed, 259 insertions, 0 deletions
diff --git a/src/boost/libs/variant2/test/variant_swap.cpp b/src/boost/libs/variant2/test/variant_swap.cpp new file mode 100644 index 00000000..3e80f0f2 --- /dev/null +++ b/src/boost/libs/variant2/test/variant_swap.cpp @@ -0,0 +1,259 @@ + +// 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 + +#include <boost/variant2/variant.hpp> +#include <boost/core/lightweight_test.hpp> +#include <boost/core/lightweight_test_trait.hpp> +#include <type_traits> +#include <utility> +#include <string> + +using namespace boost::variant2; + +#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__) + +struct X1 +{ + int v; + + X1(): v(0) {} + explicit X1(int v): v(v) {} + X1(X1 const& r): v(r.v) {} + X1(X1&& r): v(r.v) {} + X1& operator=( X1 const& r ) { v = r.v; return *this; } + X1& operator=( X1&& r ) { v = r.v; return *this; } +}; + +inline bool operator==( X1 const& a, X1 const& b ) { return a.v == b.v; } + +STATIC_ASSERT( !std::is_nothrow_default_constructible<X1>::value ); +STATIC_ASSERT( !std::is_nothrow_copy_constructible<X1>::value ); +STATIC_ASSERT( !std::is_nothrow_move_constructible<X1>::value ); +STATIC_ASSERT( !std::is_nothrow_copy_assignable<X1>::value ); +STATIC_ASSERT( !std::is_nothrow_move_assignable<X1>::value ); + +struct X2 +{ + int v; + + X2(): v(0) {} + explicit X2(int v): v(v) {} + X2(X2 const& r): v(r.v) {} + X2(X2&& r): v(r.v) {} + X2& operator=( X2 const& r ) { v = r.v; return *this; } + X2& operator=( X2&& r ) { v = r.v; return *this; } +}; + +inline bool operator==( X2 const& a, X2 const& b ) { return a.v == b.v; } + +STATIC_ASSERT( !std::is_nothrow_default_constructible<X2>::value ); +STATIC_ASSERT( !std::is_nothrow_copy_constructible<X2>::value ); +STATIC_ASSERT( !std::is_nothrow_move_constructible<X2>::value ); +STATIC_ASSERT( !std::is_nothrow_copy_assignable<X2>::value ); +STATIC_ASSERT( !std::is_nothrow_move_assignable<X2>::value ); + +int main() +{ + { + variant<int> v; + BOOST_TEST_EQ( get<0>(v), 0 ); + + variant<int> v2( 1 ); + BOOST_TEST_EQ( get<0>(v2), 1 ); + + swap( v, v2 ); + BOOST_TEST_EQ( get<0>(v), 1 ); + BOOST_TEST_EQ( get<0>(v2), 0 ); + + variant<int> v3( 2 ); + BOOST_TEST_EQ( get<0>(v3), 2 ); + + swap( v, v3 ); + BOOST_TEST_EQ( get<0>(v), 2 ); + BOOST_TEST_EQ( get<0>(v3), 1 ); + } + + { + variant<int, float> v; + + BOOST_TEST_EQ( v.index(), 0 ); + BOOST_TEST_EQ( get<0>(v), 0 ); + + variant<int, float> v2( 1 ); + + BOOST_TEST_EQ( v2.index(), 0 ); + BOOST_TEST_EQ( get<0>(v2), 1 ); + + swap( v, v2 ); + + BOOST_TEST_EQ( v.index(), 0 ); + BOOST_TEST_EQ( get<0>(v), 1 ); + + BOOST_TEST_EQ( v2.index(), 0 ); + BOOST_TEST_EQ( get<0>(v2), 0 ); + + variant<int, float> v3( 3.14f ); + + BOOST_TEST_EQ( v3.index(), 1 ); + BOOST_TEST_EQ( get<1>(v3), 3.14f ); + + swap( v, v3 ); + + BOOST_TEST_EQ( v.index(), 1 ); + BOOST_TEST_EQ( get<1>(v), 3.14f ); + + BOOST_TEST_EQ( v3.index(), 0 ); + BOOST_TEST_EQ( get<0>(v3), 1 ); + + variant<int, float> v4( 3.15f ); + + BOOST_TEST_EQ( v4.index(), 1 ); + BOOST_TEST_EQ( get<1>(v4), 3.15f ); + + swap( v, v4 ); + + BOOST_TEST_EQ( v.index(), 1 ); + BOOST_TEST_EQ( get<1>(v), 3.15f ); + + BOOST_TEST_EQ( v4.index(), 1 ); + BOOST_TEST_EQ( get<1>(v4), 3.14f ); + } + + { + variant<int, int, float, std::string> v; + + BOOST_TEST_EQ( v.index(), 0 ); + BOOST_TEST_EQ( get<0>(v), 0 ); + + variant<int, int, float, std::string> v2( in_place_index_t<1>{}, 1 ); + + BOOST_TEST_EQ( v2.index(), 1 ); + BOOST_TEST_EQ( get<1>(v2), 1 ); + + swap( v, v2 ); + + BOOST_TEST_EQ( v.index(), 1 ); + BOOST_TEST_EQ( get<1>(v), 1 ); + + BOOST_TEST_EQ( v2.index(), 0 ); + BOOST_TEST_EQ( get<0>(v2), 0 ); + + variant<int, int, float, std::string> v3( 3.14f ); + + BOOST_TEST_EQ( v3.index(), 2 ); + BOOST_TEST_EQ( get<2>(v3), 3.14f ); + + swap( v, v3 ); + + BOOST_TEST_EQ( v.index(), 2 ); + BOOST_TEST_EQ( get<2>(v), 3.14f ); + + BOOST_TEST_EQ( v3.index(), 1 ); + BOOST_TEST_EQ( get<1>(v3), 1 ); + + variant<int, int, float, std::string> v4( 3.15f ); + + BOOST_TEST_EQ( v4.index(), 2 ); + BOOST_TEST_EQ( get<2>(v4), 3.15f ); + + swap( v, v4 ); + + BOOST_TEST_EQ( v.index(), 2 ); + BOOST_TEST_EQ( get<2>(v), 3.15f ); + + BOOST_TEST_EQ( v4.index(), 2 ); + BOOST_TEST_EQ( get<2>(v4), 3.14f ); + + variant<int, int, float, std::string> v5( "s1" ); + + BOOST_TEST_EQ( v5.index(), 3 ); + BOOST_TEST_EQ( get<3>(v5), std::string("s1") ); + + swap( v, v5 ); + + BOOST_TEST_EQ( v.index(), 3 ); + BOOST_TEST_EQ( get<3>(v), std::string("s1") ); + + BOOST_TEST_EQ( v5.index(), 2 ); + BOOST_TEST_EQ( get<2>(v5), 3.15f ); + + variant<int, int, float, std::string> v6( "s2" ); + + BOOST_TEST_EQ( v6.index(), 3 ); + BOOST_TEST_EQ( get<3>(v6), std::string("s2") ); + + swap( v, v6 ); + + BOOST_TEST_EQ( v.index(), 3 ); + BOOST_TEST_EQ( get<3>(v), std::string("s2") ); + + BOOST_TEST_EQ( v6.index(), 3 ); + BOOST_TEST_EQ( get<3>(v6), std::string("s1") ); + } + + { + variant<X1, X2> v; + + BOOST_TEST_EQ( v.index(), 0 ); + BOOST_TEST_EQ( get<0>(v).v, 0 ); + + variant<X1, X2> v2( X1{1} ); + + BOOST_TEST_EQ( v2.index(), 0 ); + BOOST_TEST_EQ( get<0>(v2).v, 1 ); + + swap( v, v2 ); + + BOOST_TEST_EQ( v.index(), 0 ); + BOOST_TEST_EQ( get<0>(v).v, 1 ); + + BOOST_TEST_EQ( v2.index(), 0 ); + BOOST_TEST_EQ( get<0>(v2).v, 0 ); + + variant<X1, X2> v3( in_place_index_t<1>{}, 2 ); + + BOOST_TEST_EQ( v3.index(), 1 ); + BOOST_TEST_EQ( get<1>(v3).v, 2 ); + + swap( v, v3 ); + + BOOST_TEST_EQ( v.index(), 1 ); + BOOST_TEST_EQ( get<1>(v).v, 2 ); + + BOOST_TEST_EQ( v3.index(), 0 ); + BOOST_TEST_EQ( get<0>(v3).v, 1 ); + + variant<X1, X2> v4( in_place_index_t<1>{}, 3 ); + + BOOST_TEST_EQ( v4.index(), 1 ); + BOOST_TEST_EQ( get<1>(v4).v, 3 ); + + swap( v, v4 ); + + BOOST_TEST_EQ( v.index(), 1 ); + BOOST_TEST_EQ( get<1>(v).v, 3 ); + + BOOST_TEST_EQ( v4.index(), 1 ); + BOOST_TEST_EQ( get<1>(v4).v, 2 ); + + variant<X1, X2> v5( in_place_index_t<0>{}, 4 ); + + BOOST_TEST_EQ( v5.index(), 0 ); + BOOST_TEST_EQ( get<0>(v5).v, 4 ); + + swap( v, v5 ); + + BOOST_TEST_EQ( v.index(), 0 ); + BOOST_TEST_EQ( get<0>(v).v, 4 ); + + BOOST_TEST_EQ( v5.index(), 1 ); + BOOST_TEST_EQ( get<1>(v5).v, 3 ); + } + + return boost::report_errors(); +} |