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c831afd93b418a4d153242a95a6a697aa8f27676
boost_beast/test/core/detail/variant.cpp
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Vinnie Falco c831afd93b Rename to BEAST_EXPECT
2017-07-25 15:58:06 -07:00

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//
// Copyright (c) 2016-2017 Vinnie Falco (vinnie dot falco at gmail dot com)
//
// 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)
//
// Test that header file is self-contained.
#include <boost/beast/core/detail/variant.hpp>
#include <boost/beast/unit_test/suite.hpp>
#include <string>
namespace boost {
namespace beast {
namespace detail {
class variant_test : public beast::unit_test::suite
{
public:
template<unsigned char I>
struct Q
{
static
unsigned char&
count()
{
static unsigned char n = 0;
return n;
}
bool move = false;
bool copy = false;
bool move_assign = false;
bool copy_assign = false;
Q() { ++count(); }
~Q() { --count(); }
Q(Q&&) { ++count(); move = true; }
Q(Q const&) { ++count(); copy = true; }
Q& operator=(Q&&) { move_assign = true; return *this; }
Q& operator=(Q const&) { copy_assign = true; return *this; }
};
void
testVariant()
{
// Default Constructor
// Destructor
{
variant<int> v;
BEAST_EXPECT(v.index() == 0);
}
// emplace
{
variant<int> v;
BEAST_EXPECT(v.index() == 0);
v.emplace<1>(10);
BEAST_EXPECT(v.index() == 1);
BEAST_EXPECT(v.get<1>() == 10);
}
{
variant<std::string> v;
v.emplace<1>("Hello, world!");
BEAST_EXPECT(v.index() == 1);
BEAST_EXPECT(v.get<1>() == "Hello, world!");
}
{
variant<Q<1>> v;
BEAST_EXPECT(Q<1>::count() == 0);
v.emplace<1>();
BEAST_EXPECT(Q<1>::count() == 1);
v.reset();
BEAST_EXPECT(Q<1>::count() == 0);
}
BEAST_EXPECT(Q<1>::count() == 0);
{
variant<Q<1>, Q<2>, Q<3>> v;
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 0);
BEAST_EXPECT(Q<3>::count() == 0);
v.emplace<1>();
BEAST_EXPECT(Q<1>::count() == 1);
BEAST_EXPECT(Q<2>::count() == 0);
BEAST_EXPECT(Q<3>::count() == 0);
v.emplace<2>();
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 1);
BEAST_EXPECT(Q<3>::count() == 0);
v.emplace<3>();
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 0);
BEAST_EXPECT(Q<3>::count() == 1);
v.reset();
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 0);
BEAST_EXPECT(Q<3>::count() == 0);
}
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 0);
BEAST_EXPECT(Q<3>::count() == 0);
// move
{
variant<std::string> v1;
BEAST_EXPECT(v1.index() == 0);
variant<std::string> v2{std::move(v1)};
BEAST_EXPECT(v1.index() == 0);
BEAST_EXPECT(v2.index() == 0);
v2.emplace<1>("Hello");
BEAST_EXPECT(v2.get<1>() == "Hello");
variant<std::string> v3{std::move(v2)};
BEAST_EXPECT(v2.index() == 0);
BEAST_EXPECT(v3.get<1>() == "Hello");
}
{
variant<Q<1>> v1;
BEAST_EXPECT(Q<1>::count() == 0);
v1.emplace<1>();
BEAST_EXPECT(Q<1>::count() == 1);
BEAST_EXPECT(! v1.get<1>().move);
variant<Q<1>> v2{std::move(v1)};
BEAST_EXPECT(v1.index() == 0);
BEAST_EXPECT(Q<1>::count() == 1);
BEAST_EXPECT(v2.get<1>().move);
}
BEAST_EXPECT(Q<1>::count() == 0);
{
variant<Q<1>, Q<2>, Q<3>> v1;
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 0);
BEAST_EXPECT(Q<3>::count() == 0);
v1.emplace<2>();
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 1);
BEAST_EXPECT(Q<3>::count() == 0);
variant<Q<1>, Q<2>, Q<3>> v2{std::move(v1)};
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 1);
BEAST_EXPECT(Q<3>::count() == 0);
BEAST_EXPECT(v2.get<2>().move);
}
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 0);
BEAST_EXPECT(Q<3>::count() == 0);
// copy
{
variant<std::string> v1;
BEAST_EXPECT(v1.index() == 0);
variant<std::string> v2{v1};
BEAST_EXPECT(v1.index() == 0);
BEAST_EXPECT(v2.index() == 0);
v2.emplace<1>("Hello");
BEAST_EXPECT(v2.get<1>() == "Hello");
variant<std::string> v3{v2};
BEAST_EXPECT(v2.get<1>() == "Hello");
BEAST_EXPECT(v3.get<1>() == "Hello");
}
{
variant<Q<1>> v1;
BEAST_EXPECT(Q<1>::count() == 0);
v1.emplace<1>();
BEAST_EXPECT(Q<1>::count() == 1);
BEAST_EXPECT(! v1.get<1>().copy);
variant<Q<1>> v2{v1};
BEAST_EXPECT(v1.index() == 1);
BEAST_EXPECT(Q<1>::count() == 2);
BEAST_EXPECT(v2.get<1>().copy);
}
BEAST_EXPECT(Q<1>::count() == 0);
{
variant<Q<1>, Q<2>, Q<3>> v1;
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 0);
BEAST_EXPECT(Q<3>::count() == 0);
v1.emplace<2>();
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 1);
BEAST_EXPECT(Q<3>::count() == 0);
variant<Q<1>, Q<2>, Q<3>> v2{v1};
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 2);
BEAST_EXPECT(Q<3>::count() == 0);
BEAST_EXPECT(v2.get<2>().copy);
}
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 0);
BEAST_EXPECT(Q<3>::count() == 0);
// move assign
{
variant<std::string> v1;
BEAST_EXPECT(v1.index() == 0);
variant<std::string> v2;
v2 = std::move(v1);
BEAST_EXPECT(v1.index() == 0);
BEAST_EXPECT(v2.index() == 0);
v2.emplace<1>("Hello");
BEAST_EXPECT(v2.get<1>() == "Hello");
variant<std::string> v3;
v3 = std::move(v2);
BEAST_EXPECT(v2.index() == 0);
BEAST_EXPECT(v3.get<1>() == "Hello");
}
{
variant<Q<1>> v1;
v1.emplace<1>();
BEAST_EXPECT(! v1.get<1>().move_assign);
BEAST_EXPECT(Q<1>::count() == 1);
variant<Q<1>> v2;
v2.emplace<1>();
BEAST_EXPECT(Q<1>::count() == 2);
BEAST_EXPECT(! v2.get<1>().move_assign);
v2 = std::move(v1);
BEAST_EXPECT(v1.index() == 0);
BEAST_EXPECT(v2.index() == 1);
BEAST_EXPECT(v2.get<1>().move);
BEAST_EXPECT(!v2.get<1>().move_assign);
BEAST_EXPECT(Q<1>::count() == 1);
}
BEAST_EXPECT(Q<1>::count() == 0);
{
variant<Q<1>, Q<2>, Q<3>> v1;
v1.emplace<2>();
BEAST_EXPECT(! v1.get<2>().move_assign);
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 1);
BEAST_EXPECT(Q<3>::count() == 0);
variant<Q<1>, Q<2>, Q<3>> v2;
v2.emplace<2>();
BEAST_EXPECT(! v2.get<2>().move_assign);
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 2);
BEAST_EXPECT(Q<3>::count() == 0);
v2 = std::move(v1);
BEAST_EXPECT(v1.index() == 0);
BEAST_EXPECT(v2.index() == 2);
BEAST_EXPECT(! v2.get<2>().move_assign);
BEAST_EXPECT(v2.get<2>().move);
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 1);
BEAST_EXPECT(Q<3>::count() == 0);
}
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 0);
BEAST_EXPECT(Q<3>::count() == 0);
// copy assign
{
variant<std::string> v1;
BEAST_EXPECT(v1.index() == 0);
variant<std::string> v2;
v2 = v1;
BEAST_EXPECT(v1.index() == 0);
BEAST_EXPECT(v2.index() == 0);
v2.emplace<1>("Hello");
BEAST_EXPECT(v2.get<1>() == "Hello");
variant<std::string> v3;
v3 = v2;
BEAST_EXPECT(v2.get<1>() == "Hello");
BEAST_EXPECT(v3.get<1>() == "Hello");
}
{
variant<Q<1>> v1;
v1.emplace<1>();
BEAST_EXPECT(! v1.get<1>().copy_assign);
BEAST_EXPECT(Q<1>::count() == 1);
variant<Q<1>> v2;
v2.emplace<1>();
BEAST_EXPECT(Q<1>::count() == 2);
BEAST_EXPECT(! v2.get<1>().copy_assign);
v2 = v1;
BEAST_EXPECT(v1.index() == 1);
BEAST_EXPECT(v2.index() == 1);
BEAST_EXPECT(! v2.get<1>().copy_assign);
BEAST_EXPECT(v2.get<1>().copy);
BEAST_EXPECT(Q<1>::count() == 2);
}
BEAST_EXPECT(Q<1>::count() == 0);
{
variant<Q<1>, Q<2>, Q<3>> v1;
v1.emplace<2>();
BEAST_EXPECT(! v1.get<2>().copy_assign);
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 1);
BEAST_EXPECT(Q<3>::count() == 0);
variant<Q<1>, Q<2>, Q<3>> v2;
v2.emplace<2>();
BEAST_EXPECT(! v2.get<2>().copy_assign);
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 2);
BEAST_EXPECT(Q<3>::count() == 0);
v2 = v1;
BEAST_EXPECT(v1.index() == 2);
BEAST_EXPECT(v2.index() == 2);
BEAST_EXPECT(! v2.get<2>().copy_assign);
BEAST_EXPECT(v2.get<2>().copy);
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 2);
BEAST_EXPECT(Q<3>::count() == 0);
}
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 0);
BEAST_EXPECT(Q<3>::count() == 0);
// get
{
variant<std::string> v;
v.emplace<1>("Hello");
v.get<1>() = "World!";
BEAST_EXPECT(v.get<1>() == "World!");
}
// reset
{
variant<std::string> v;
v.emplace<1>("Hello");
v.reset();
BEAST_EXPECT(v.index() == 0);
}
{
variant<Q<1>> v;
BEAST_EXPECT(Q<1>::count() == 0);
v.emplace<1>();
BEAST_EXPECT(Q<1>::count() == 1);
v.reset();
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(v.index() == 0);
}
{
variant<Q<1>, Q<2>, Q<3>> v;
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 0);
BEAST_EXPECT(Q<3>::count() == 0);
v.emplace<2>();
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 1);
BEAST_EXPECT(Q<3>::count() == 0);
v.reset();
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 0);
BEAST_EXPECT(Q<3>::count() == 0);
BEAST_EXPECT(v.index() == 0);
}
BEAST_EXPECT(Q<1>::count() == 0);
BEAST_EXPECT(Q<2>::count() == 0);
BEAST_EXPECT(Q<3>::count() == 0);
}
void
run()
{
testVariant();
}
};
BOOST_BEAST_DEFINE_TESTSUITE(variant,core,beast);
} // detail
} // beast
} // boost
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