mirror of
https://github.com/boostorg/variant2.git
synced 2025-08-01 21:24:26 +02:00
Add test/variant_emplace_index, _type
This commit is contained in:
Peter Dimov
@@ -32,3 +32,5 @@ compile variant_in_place_type_construct_cx.cpp : : : $(REQ) ;
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run variant_copy_assign.cpp : : : $(REQ) ;
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run variant_move_assign.cpp : : : $(REQ) ;
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run variant_value_assign.cpp : : : $(REQ) ;
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run variant_emplace_index.cpp : : : $(REQ) ;
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run variant_emplace_type.cpp : : : $(REQ) ;
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173
test/variant_emplace_index.cpp
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173
test/variant_emplace_index.cpp
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@@ -0,0 +1,173 @@
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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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#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
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struct X1
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{
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int v;
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X1(): v(0) {}
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explicit X1(int v): v(v) {}
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X1(X1 const& r): v(r.v) {}
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X1(X1&& r): v(r.v) {}
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X1& operator=( X1 const& r ) { v = r.v; return *this; }
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X1& operator=( X1&& r ) { v = r.v; return *this; }
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};
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inline bool operator==( X1 const& a, X1 const& b ) { return a.v == b.v; }
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STATIC_ASSERT( !std::is_nothrow_default_constructible<X1>::value );
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STATIC_ASSERT( !std::is_nothrow_copy_constructible<X1>::value );
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STATIC_ASSERT( !std::is_nothrow_move_constructible<X1>::value );
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STATIC_ASSERT( !std::is_nothrow_copy_assignable<X1>::value );
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STATIC_ASSERT( !std::is_nothrow_move_assignable<X1>::value );
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struct X2
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{
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int v;
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X2(): v(0) {}
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explicit X2(int v): v(v) {}
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X2(X2 const& r): v(r.v) {}
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X2(X2&& r): v(r.v) {}
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X2& operator=( X2 const& r ) { v = r.v; return *this; }
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X2& operator=( X2&& r ) { v = r.v; return *this; }
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};
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inline bool operator==( X2 const& a, X2 const& b ) { return a.v == b.v; }
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STATIC_ASSERT( !std::is_nothrow_default_constructible<X2>::value );
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STATIC_ASSERT( !std::is_nothrow_copy_constructible<X2>::value );
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STATIC_ASSERT( !std::is_nothrow_move_constructible<X2>::value );
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STATIC_ASSERT( !std::is_nothrow_copy_assignable<X2>::value );
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STATIC_ASSERT( !std::is_nothrow_move_assignable<X2>::value );
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int main()
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{
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{
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variant<int> v;
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BOOST_TEST_EQ( get<0>(v), 0 );
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v.emplace<0>( 1 );
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BOOST_TEST_EQ( get<0>(v), 1 );
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v.emplace<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;
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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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v.emplace<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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v.emplace<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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v.emplace<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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v.emplace<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, int, float, std::string> v;
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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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v.emplace<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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v.emplace<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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v.emplace<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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v.emplace<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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v.emplace<2>();
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BOOST_TEST_EQ( v.index(), 2 );
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BOOST_TEST_EQ( get<2>(v), 0 );
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v.emplace<3>( "s1" );
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BOOST_TEST_EQ( v.index(), 3 );
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BOOST_TEST_EQ( get<3>(v), std::string("s1") );
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v.emplace<3>( "s2" );
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BOOST_TEST_EQ( v.index(), 3 );
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BOOST_TEST_EQ( get<3>(v), std::string("s2") );
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v.emplace<3>();
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BOOST_TEST_EQ( v.index(), 3 );
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BOOST_TEST_EQ( get<3>(v), std::string() );
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}
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{
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variant<X1, X2> v;
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BOOST_TEST_EQ( v.index(), 0 );
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BOOST_TEST_EQ( get<0>(v).v, 0 );
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v.emplace<0>( 1 );
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BOOST_TEST_EQ( v.index(), 0 );
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BOOST_TEST_EQ( get<0>(v).v, 1 );
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v.emplace<1>( 2 );
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BOOST_TEST_EQ( v.index(), 1 );
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BOOST_TEST_EQ( get<1>(v).v, 2 );
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v.emplace<0>();
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BOOST_TEST_EQ( v.index(), 0 );
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BOOST_TEST_EQ( get<0>(v).v, 0 );
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v.emplace<0>( 4 );
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BOOST_TEST_EQ( v.index(), 0 );
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BOOST_TEST_EQ( get<0>(v).v, 4 );
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v.emplace<1>();
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BOOST_TEST_EQ( v.index(), 1 );
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BOOST_TEST_EQ( get<1>(v).v, 0 );
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v.emplace<1>( 6 );
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BOOST_TEST_EQ( v.index(), 1 );
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BOOST_TEST_EQ( get<1>(v).v, 6 );
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v.emplace<0>( 3 );
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BOOST_TEST_EQ( v.index(), 0 );
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BOOST_TEST_EQ( get<0>(v).v, 3 );
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v.emplace<0>( 4 );
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BOOST_TEST_EQ( v.index(), 0 );
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BOOST_TEST_EQ( get<0>(v).v, 4 );
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}
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return boost::report_errors();
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}
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161
test/variant_emplace_type.cpp
Normal file
161
test/variant_emplace_type.cpp
Normal file
@@ -0,0 +1,161 @@
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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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#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
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struct X1
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{
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int v;
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X1(): v(0) {}
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explicit X1(int v): v(v) {}
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X1(X1 const& r): v(r.v) {}
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X1(X1&& r): v(r.v) {}
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X1& operator=( X1 const& r ) { v = r.v; return *this; }
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X1& operator=( X1&& r ) { v = r.v; return *this; }
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};
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inline bool operator==( X1 const& a, X1 const& b ) { return a.v == b.v; }
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STATIC_ASSERT( !std::is_nothrow_default_constructible<X1>::value );
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STATIC_ASSERT( !std::is_nothrow_copy_constructible<X1>::value );
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STATIC_ASSERT( !std::is_nothrow_move_constructible<X1>::value );
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STATIC_ASSERT( !std::is_nothrow_copy_assignable<X1>::value );
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STATIC_ASSERT( !std::is_nothrow_move_assignable<X1>::value );
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struct X2
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{
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int v;
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X2(): v(0) {}
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explicit X2(int v): v(v) {}
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X2(X2 const& r): v(r.v) {}
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X2(X2&& r): v(r.v) {}
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X2& operator=( X2 const& r ) { v = r.v; return *this; }
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X2& operator=( X2&& r ) { v = r.v; return *this; }
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};
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inline bool operator==( X2 const& a, X2 const& b ) { return a.v == b.v; }
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STATIC_ASSERT( !std::is_nothrow_default_constructible<X2>::value );
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STATIC_ASSERT( !std::is_nothrow_copy_constructible<X2>::value );
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STATIC_ASSERT( !std::is_nothrow_move_constructible<X2>::value );
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STATIC_ASSERT( !std::is_nothrow_copy_assignable<X2>::value );
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STATIC_ASSERT( !std::is_nothrow_move_assignable<X2>::value );
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int main()
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{
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{
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variant<int> v;
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BOOST_TEST_EQ( get<0>(v), 0 );
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v.emplace<int>( 1 );
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BOOST_TEST_EQ( get<0>(v), 1 );
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v.emplace<int>();
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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;
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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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v.emplace<int>( 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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v.emplace<float>( 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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v.emplace<float>();
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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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v.emplace<int>();
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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, int, float, std::string> v;
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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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v.emplace<float>( 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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v.emplace<float>();
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BOOST_TEST_EQ( v.index(), 2 );
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BOOST_TEST_EQ( get<2>(v), 0 );
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v.emplace<std::string>( "s1" );
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BOOST_TEST_EQ( v.index(), 3 );
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BOOST_TEST_EQ( get<3>(v), std::string("s1") );
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v.emplace<std::string>( "s2" );
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BOOST_TEST_EQ( v.index(), 3 );
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BOOST_TEST_EQ( get<3>(v), std::string("s2") );
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v.emplace<std::string>();
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BOOST_TEST_EQ( v.index(), 3 );
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BOOST_TEST_EQ( get<3>(v), std::string() );
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}
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{
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variant<X1, X2> v;
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BOOST_TEST_EQ( v.index(), 0 );
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BOOST_TEST_EQ( get<0>(v).v, 0 );
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v.emplace<X1>( 1 );
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BOOST_TEST_EQ( v.index(), 0 );
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BOOST_TEST_EQ( get<0>(v).v, 1 );
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v.emplace<X2>( 2 );
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BOOST_TEST_EQ( v.index(), 1 );
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BOOST_TEST_EQ( get<1>(v).v, 2 );
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v.emplace<X1>();
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BOOST_TEST_EQ( v.index(), 0 );
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BOOST_TEST_EQ( get<0>(v).v, 0 );
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v.emplace<X1>( 4 );
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BOOST_TEST_EQ( v.index(), 0 );
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BOOST_TEST_EQ( get<0>(v).v, 4 );
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v.emplace<X2>();
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BOOST_TEST_EQ( v.index(), 1 );
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BOOST_TEST_EQ( get<1>(v).v, 0 );
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v.emplace<X2>( 6 );
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BOOST_TEST_EQ( v.index(), 1 );
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BOOST_TEST_EQ( get<1>(v).v, 6 );
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v.emplace<X1>( 3 );
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BOOST_TEST_EQ( v.index(), 0 );
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BOOST_TEST_EQ( get<0>(v).v, 3 );
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v.emplace<X1>( 4 );
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BOOST_TEST_EQ( v.index(), 0 );
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BOOST_TEST_EQ( get<0>(v).v, 4 );
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}
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return boost::report_errors();
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}
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