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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:45:59 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:45:59 +0000
commit19fcec84d8d7d21e796c7624e521b60d28ee21ed (patch)
tree42d26aa27d1e3f7c0b8bd3fd14e7d7082f5008dc /src/boost/libs/variant2/test/variant_value_assign.cpp
parentInitial commit. (diff)
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Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/boost/libs/variant2/test/variant_value_assign.cpp')
-rw-r--r--src/boost/libs/variant2/test/variant_value_assign.cpp206
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diff --git a/src/boost/libs/variant2/test/variant_value_assign.cpp b/src/boost/libs/variant2/test/variant_value_assign.cpp
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+
+// 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 );
+
+ v = 1;
+ BOOST_TEST_EQ( get<0>(v), 1 );
+
+ v = 2;
+ BOOST_TEST_EQ( get<0>(v), 2 );
+
+ int w1 = 3;
+
+ v = w1;
+ BOOST_TEST_EQ( get<0>(v), 3 );
+
+ int const w2 = 4;
+
+ v = w2;
+ BOOST_TEST_EQ( get<0>(v), 4 );
+
+ v = std::move( w1 );
+ BOOST_TEST_EQ( get<0>(v), 3 );
+
+ v = std::move( w2 );
+ BOOST_TEST_EQ( get<0>(v), 4 );
+ }
+
+ {
+ variant<int, float> v;
+ BOOST_TEST_EQ( v.index(), 0 );
+ BOOST_TEST_EQ( get<0>(v), 0 );
+
+ v = 1;
+ BOOST_TEST_EQ( v.index(), 0 );
+ BOOST_TEST_EQ( get<0>(v), 1 );
+
+ v = 3.14f;
+ BOOST_TEST_EQ( v.index(), 1 );
+ BOOST_TEST_EQ( get<1>(v), 3.14f );
+
+ float w1 = 3.15f;
+
+ v = w1;
+ BOOST_TEST_EQ( v.index(), 1 );
+ BOOST_TEST_EQ( get<1>(v), 3.15f );
+
+ int const w2 = 2;
+
+ v = w2;
+ BOOST_TEST_EQ( v.index(), 0 );
+ BOOST_TEST_EQ( get<0>(v), 2 );
+
+ v = std::move(w1);
+ BOOST_TEST_EQ( v.index(), 1 );
+ BOOST_TEST_EQ( get<1>(v), 3.15f );
+
+ v = std::move(w2);
+ BOOST_TEST_EQ( v.index(), 0 );
+ BOOST_TEST_EQ( get<0>(v), 2 );
+ }
+
+ {
+ variant<int, int, float, std::string> v;
+ BOOST_TEST_EQ( v.index(), 0 );
+ BOOST_TEST_EQ( get<0>(v), 0 );
+
+ v = 3.14f;
+ BOOST_TEST_EQ( v.index(), 2 );
+ BOOST_TEST_EQ( get<2>(v), 3.14f );
+
+ float const w1 = 3.15f;
+
+ v = w1;
+ BOOST_TEST_EQ( v.index(), 2 );
+ BOOST_TEST_EQ( get<2>(v), 3.15f );
+
+ variant<int, int, float, std::string> v5( "s1" );
+
+ v = "s1";
+ BOOST_TEST_EQ( v.index(), 3 );
+ BOOST_TEST_EQ( get<3>(v), std::string("s1") );
+
+ std::string w2( "s2" );
+
+ v = w2;
+ BOOST_TEST_EQ( v.index(), 3 );
+ BOOST_TEST_EQ( get<3>(v), std::string("s2") );
+
+ v = std::move(w1);
+ BOOST_TEST_EQ( v.index(), 2 );
+ BOOST_TEST_EQ( get<2>(v), 3.15f );
+
+ v = std::move(w2);
+ BOOST_TEST_EQ( v.index(), 3 );
+ BOOST_TEST_EQ( get<3>(v), std::string("s2") );
+ }
+
+ {
+ variant<X1, X2> v;
+ BOOST_TEST_EQ( v.index(), 0 );
+ BOOST_TEST_EQ( get<0>(v).v, 0 );
+
+ v = X1{1};
+ BOOST_TEST_EQ( v.index(), 0 );
+ BOOST_TEST_EQ( get<0>(v).v, 1 );
+
+ v = X2{2};
+ BOOST_TEST_EQ( v.index(), 1 );
+ BOOST_TEST_EQ( get<1>(v).v, 2 );
+
+ X1 w1{3};
+
+ v = w1;
+ BOOST_TEST_EQ( v.index(), 0 );
+ BOOST_TEST_EQ( get<0>(v).v, 3 );
+
+ X1 const w2{4};
+
+ v = w2;
+ BOOST_TEST_EQ( v.index(), 0 );
+ BOOST_TEST_EQ( get<0>(v).v, 4 );
+
+ X2 w3{5};
+
+ v = w3;
+ BOOST_TEST_EQ( v.index(), 1 );
+ BOOST_TEST_EQ( get<1>(v).v, 5 );
+
+ X2 const w4{6};
+
+ v = w4;
+ BOOST_TEST_EQ( v.index(), 1 );
+ BOOST_TEST_EQ( get<1>(v).v, 6 );
+
+ v = std::move(w1);
+ BOOST_TEST_EQ( v.index(), 0 );
+ BOOST_TEST_EQ( get<0>(v).v, 3 );
+
+ v = std::move(w2);
+ BOOST_TEST_EQ( v.index(), 0 );
+ BOOST_TEST_EQ( get<0>(v).v, 4 );
+ }
+
+ return boost::report_errors();
+}