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// Copyright (c) 2018-2025 Jean-Louis Leroy
// 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/openmethod/interop/std_unique_ptr.hpp>
#define BOOST_TEST_MODULE openmethod
#include <boost/test/unit_test.hpp>
#include "test_virtual_ptr_value_semantics.hpp"
#include <memory>
using namespace detail;
BOOST_AUTO_TEST_CASE_TEMPLATE(
unique_virtual_ptr_value, Registry, test_policies) {
init_test<Registry>();
static_assert(std::is_same_v<
typename unique_virtual_ptr<Animal, Registry>::element_type,
Animal>);
static_assert(std::is_same_v<
decltype(std::declval<unique_virtual_ptr<Animal, Registry>>()
.get()),
Animal*>);
static_assert(IsSmartPtr<std::unique_ptr<Animal>, Registry>);
static_assert(IsSmartPtr<std::unique_ptr<const Animal>, Registry>);
static_assert(
std::is_same_v<
decltype(*std::declval<unique_virtual_ptr<Animal, Registry>>()),
Animal&>);
{
// unique_virtual_ptr<Dog>(nullptr)
unique_virtual_ptr<Dog, Registry> p{nullptr};
BOOST_TEST(p.get() == nullptr);
BOOST_TEST(p.vptr() == nullptr);
}
static_assert(!construct_assign_ok<unique_virtual_ptr<Dog, Registry>, Dog>);
static_assert(
!construct_assign_ok<unique_virtual_ptr<Dog, Registry>, Dog&>);
static_assert(
!construct_assign_ok<unique_virtual_ptr<Dog, Registry>, Dog*>);
static_assert(!construct_assign_ok<
unique_virtual_ptr<Dog, Registry>, std::unique_ptr<Dog>&>);
static_assert(
!construct_assign_ok<
unique_virtual_ptr<Dog, Registry>, const std::unique_ptr<Dog>&>);
static_assert(!construct_assign_ok<
unique_virtual_ptr<Dog, Registry>, unique_virtual_ptr<Dog>>);
static_assert(!construct_assign_ok<
unique_virtual_ptr<Dog, Registry>, unique_virtual_ptr<Dog>&>);
static_assert(
!construct_assign_ok<
unique_virtual_ptr<Dog, Registry>, const unique_virtual_ptr<Dog>&>);
{
// construct from unique_ptr temporary
unique_virtual_ptr<Dog, Registry> p(std::make_unique<Dog>());
BOOST_TEST(p.vptr() == Registry::template static_vptr<Dog>);
}
{
// derived-to-base ok?
unique_virtual_ptr<Animal, Registry> p(std::make_unique<Dog>());
BOOST_TEST(p.vptr() == Registry::template static_vptr<Dog>);
}
static_assert(
!construct_assign_ok<
unique_virtual_ptr<Dog, Registry>, const std::unique_ptr<Dog>&>);
static_assert(!construct_assign_ok<
unique_virtual_ptr<Dog, Registry>, std::unique_ptr<Dog>&>);
static_assert(!construct_assign_ok<
unique_virtual_ptr<Dog, Registry>,
const unique_virtual_ptr<Dog, Registry>&>);
static_assert(!construct_assign_ok<
unique_virtual_ptr<Dog, Registry>,
unique_virtual_ptr<Dog, Registry>&>);
static_assert(!construct_assign_ok<
unique_virtual_ptr<Dog, Registry>,
unique_virtual_ptr<Dog, Registry>&>);
{
// assign from smart ptr temporary
unique_virtual_ptr<Dog, Registry> p{nullptr};
p = std::make_unique<Dog>();
BOOST_TEST(p.get() != nullptr);
BOOST_TEST(p.vptr() == Registry::template static_vptr<Dog>);
}
{
// derived-to-base ok?
unique_virtual_ptr<Animal, Registry> p{nullptr};
p = std::make_unique<Dog>();
BOOST_TEST(p.get() != nullptr);
BOOST_TEST(p.vptr() == Registry::template static_vptr<Dog>);
}
{
// unique_virtual_ptr<Dog>(unique_virtual_ptr<Dog>)
unique_virtual_ptr<Dog, Registry> p(std::make_unique<Dog>());
auto dog = p.get();
unique_virtual_ptr<Dog, Registry> q(std::move(p));
BOOST_TEST(q.get() == dog);
BOOST_TEST(q.vptr() == Registry::template static_vptr<Dog>);
BOOST_TEST(p.get() == nullptr);
BOOST_TEST(p.vptr() == nullptr);
}
{
// derived-to-base ok?
unique_virtual_ptr<Dog, Registry> p(std::make_unique<Dog>());
auto dog = p.get();
unique_virtual_ptr<Animal, Registry> q(std::move(p));
BOOST_TEST(q.get() == dog);
BOOST_TEST(q.vptr() == Registry::template static_vptr<Dog>);
BOOST_TEST(p.get() == nullptr);
BOOST_TEST(p.vptr() == nullptr);
}
{
// virtual_ptr<Dog>(std::unique_ptr<Dog>())
unique_virtual_ptr<Dog, Registry> p = std::unique_ptr<Dog>();
BOOST_TEST(p.get() == nullptr);
BOOST_TEST(p.vptr() == nullptr);
}
{
unique_virtual_ptr<Dog, Registry> p(std::make_unique<Dog>());
p = nullptr;
BOOST_TEST(p.get() == nullptr);
BOOST_TEST(p.vptr() == nullptr);
}
{
unique_virtual_ptr<Dog, Registry> p(std::make_unique<Dog>());
p = std::unique_ptr<Dog>();
BOOST_TEST(p.get() == nullptr);
BOOST_TEST(p.vptr() == nullptr);
}
#if 0
{
// unique_virtual_ptr<Dog> = const std::unique_ptr<Dog>&
unique_virtual_ptr<Dog, Registry> p;
const auto s = std::make_unique<Dog>();
p = s;
BOOST_TEST(p.get() == s.get());
BOOST_TEST(p.vptr() == Registry::template static_vptr<Dog>);
}
{
// unique_virtual_ptr<Dog> = std::unique_ptr<Dog>&
unique_virtual_ptr<Dog, Registry> p;
auto s = std::make_unique<Dog>();
p = s;
BOOST_TEST(p.get() == s.get());
BOOST_TEST(p.vptr() == Registry::template static_vptr<Dog>);
}
{
// unique_virtual_ptr<Dog> = std::unique_ptr<Dog>&&
auto s = std::make_unique<Dog>();
auto p = s;
unique_virtual_ptr<Dog, Registry> q;
q = std::move(p);
BOOST_TEST(q.get() == s.get());
BOOST_TEST(q.vptr() == Registry::template static_vptr<Dog>);
BOOST_TEST(p.get() == nullptr);
}
{
// unique_virtual_ptr<Animal> = std::unique_ptr<Dog>&&
auto s = std::make_unique<Dog>();
auto p = s;
unique_virtual_ptr<Animal, Registry> q;
q = std::move(p);
BOOST_TEST(q.get() == s.get());
BOOST_TEST(q.vptr() == Registry::template static_vptr<Dog>);
BOOST_TEST(p.get() == nullptr);
}
{
// unique_virtual_ptr<Dog> = unique_virtual_ptr<Dog>&&
auto s = std::make_unique<Dog>();
unique_virtual_ptr<Dog, Registry> p(s);
unique_virtual_ptr<Dog, Registry> q;
q = std::move(p);
BOOST_TEST(q.get() == s.get());
BOOST_TEST(q.vptr() == Registry::template static_vptr<Dog>);
BOOST_TEST(p.get() == nullptr);
BOOST_TEST(p.vptr() == nullptr);
}
{
// unique_virtual_ptr<Animal> = unique_virtual_ptr<Dog>&&
auto s = std::make_unique<Dog>();
unique_virtual_ptr<Dog, Registry> p(s);
unique_virtual_ptr<Animal, Registry> q;
q = std::move(p);
BOOST_TEST(q.get() == s.get());
BOOST_TEST(q.vptr() == Registry::template static_vptr<Dog>);
BOOST_TEST(p.get() == nullptr);
BOOST_TEST(p.vptr() == nullptr);
}
{
// virtual_ptr<Dog>(unique_virtual_ptr<Dog>&)
auto p = make_unique_virtual<Dog, Registry>();
virtual_ptr<Dog, Registry> q(p);
BOOST_TEST(q.get() == p.get());
BOOST_TEST(q.vptr() == Registry::template static_vptr<Dog>);
}
{
// virtual_ptr<Dog> = unique_virtual_ptr<Dog>&
const auto p = make_unique_virtual<Dog, Registry>();
virtual_ptr<Dog, Registry> q;
q = p;
BOOST_TEST(q.get() == p.get());
BOOST_TEST(q.vptr() == Registry::template static_vptr<Dog>);
}
// illegal constructions and assignments
static_assert(
!construct_assign_ok<unique_virtual_ptr<Dog, Registry>, Dog>);
static_assert(
!construct_assign_ok<unique_virtual_ptr<Dog, Registry>, Dog&&>);
static_assert(
!construct_assign_ok<unique_virtual_ptr<Dog, Registry>, const Dog&>);
static_assert(
!construct_assign_ok<unique_virtual_ptr<Dog, Registry>, const Dog*>);
static_assert(!std::is_assignable_v<unique_virtual_ptr<Dog, Registry>, Dog>);
static_assert(
!std::is_assignable_v<unique_virtual_ptr<Dog, Registry>, Dog&&>);
static_assert(
!std::is_assignable_v<unique_virtual_ptr<Dog, Registry>, const Dog&>);
static_assert(
!std::is_assignable_v<unique_virtual_ptr<Dog, Registry>, const Dog*>);
#endif
}
BOOST_AUTO_TEST_CASE_TEMPLATE(
cast_unique_virtual_ptr_value, Class, test_classes) {
init_test<default_registry>();
unique_virtual_ptr<Animal> base = make_unique_virtual<Class>();
auto p = base.get();
auto derived =
virtual_traits<unique_virtual_ptr<Animal>, default_registry>::cast<
unique_virtual_ptr<Class>>(std::move(base));
BOOST_TEST(derived.get() == p);
BOOST_TEST(derived.vptr() == default_registry::static_vptr<Class>);
BOOST_TEST(base.get() == nullptr);
}
template struct check_illegal_smart_ops<
std::unique_ptr, std::shared_ptr, direct_vector>;
// Cannot construct or assign a virtual_ptr from a non-polymorphic object.
static_assert(!construct_assign_ok<
virtual_ptr<std::unique_ptr<NonPolymorphic>>,
const std::unique_ptr<NonPolymorphic>&>);
static_assert(!construct_assign_ok<
virtual_ptr<std::unique_ptr<NonPolymorphic>>,
std::unique_ptr<NonPolymorphic>&>);
static_assert(!construct_assign_ok<
virtual_ptr<std::unique_ptr<NonPolymorphic>>,
std::unique_ptr<NonPolymorphic>&&>);
// OK to move from another virtual_ptr though, because it can be constructed
// using 'final'.
static_assert(construct_assign_ok<
virtual_ptr<std::unique_ptr<NonPolymorphic>>,
virtual_ptr<std::unique_ptr<NonPolymorphic>>&&>);
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