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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03
// Self assignement post-conditions are tested.
// ADDITIONAL_COMPILE_FLAGS: -Wno-self-move
// <memory>
// unique_ptr
// Test unique_ptr move assignment
// test move assignment. Should only require a MoveConstructible deleter, or if
// deleter is a reference, not even that.
#include <memory>
#include <utility>
#include <cassert>
#include "test_macros.h"
#include "deleter_types.h"
#include "unique_ptr_test_helper.h"
struct GenericDeleter {
void operator()(void*) const;
};
template <bool IsArray>
TEST_CONSTEXPR_CXX23 void test_basic() {
typedef typename std::conditional<IsArray, A[], A>::type VT;
const int expect_alive = IsArray ? 5 : 1;
{
std::unique_ptr<VT> s1(newValue<VT>(expect_alive));
A* p = s1.get();
std::unique_ptr<VT> s2(newValue<VT>(expect_alive));
if (!TEST_IS_CONSTANT_EVALUATED)
assert(A::count == (expect_alive * 2));
s2 = std::move(s1);
if (!TEST_IS_CONSTANT_EVALUATED)
assert(A::count == expect_alive);
assert(s2.get() == p);
assert(s1.get() == 0);
}
if (!TEST_IS_CONSTANT_EVALUATED)
assert(A::count == 0);
{
std::unique_ptr<VT, Deleter<VT> > s1(newValue<VT>(expect_alive),
Deleter<VT>(5));
A* p = s1.get();
std::unique_ptr<VT, Deleter<VT> > s2(newValue<VT>(expect_alive));
if (!TEST_IS_CONSTANT_EVALUATED)
assert(A::count == (expect_alive * 2));
s2 = std::move(s1);
assert(s2.get() == p);
assert(s1.get() == 0);
if (!TEST_IS_CONSTANT_EVALUATED)
assert(A::count == expect_alive);
assert(s2.get_deleter().state() == 5);
assert(s1.get_deleter().state() == 0);
}
if (!TEST_IS_CONSTANT_EVALUATED)
assert(A::count == 0);
{
CDeleter<VT> d1(5);
std::unique_ptr<VT, CDeleter<VT>&> s1(newValue<VT>(expect_alive), d1);
A* p = s1.get();
CDeleter<VT> d2(6);
std::unique_ptr<VT, CDeleter<VT>&> s2(newValue<VT>(expect_alive), d2);
s2 = std::move(s1);
assert(s2.get() == p);
assert(s1.get() == 0);
if (!TEST_IS_CONSTANT_EVALUATED)
assert(A::count == expect_alive);
assert(d1.state() == 5);
assert(d2.state() == 5);
}
if (!TEST_IS_CONSTANT_EVALUATED)
assert(A::count == 0);
{
std::unique_ptr<VT> s(newValue<VT>(expect_alive));
A* p = s.get();
s = std::move(s);
if (!TEST_IS_CONSTANT_EVALUATED)
assert(A::count == expect_alive);
assert(s.get() == p);
}
if (!TEST_IS_CONSTANT_EVALUATED)
assert(A::count == 0);
}
template <bool IsArray>
TEST_CONSTEXPR_CXX23 void test_sfinae() {
typedef typename std::conditional<IsArray, int[], int>::type VT;
{
typedef std::unique_ptr<VT> U;
static_assert(!std::is_assignable<U, U&>::value, "");
static_assert(!std::is_assignable<U, const U&>::value, "");
static_assert(!std::is_assignable<U, const U&&>::value, "");
static_assert(std::is_nothrow_assignable<U, U&&>::value, "");
}
{
typedef std::unique_ptr<VT, GenericDeleter> U;
static_assert(!std::is_assignable<U, U&>::value, "");
static_assert(!std::is_assignable<U, const U&>::value, "");
static_assert(!std::is_assignable<U, const U&&>::value, "");
static_assert(std::is_nothrow_assignable<U, U&&>::value, "");
}
{
typedef std::unique_ptr<VT, NCDeleter<VT>&> U;
static_assert(!std::is_assignable<U, U&>::value, "");
static_assert(!std::is_assignable<U, const U&>::value, "");
static_assert(!std::is_assignable<U, const U&&>::value, "");
static_assert(std::is_nothrow_assignable<U, U&&>::value, "");
}
{
typedef std::unique_ptr<VT, const NCDeleter<VT>&> U;
static_assert(!std::is_assignable<U, U&>::value, "");
static_assert(!std::is_assignable<U, const U&>::value, "");
static_assert(!std::is_assignable<U, const U&&>::value, "");
static_assert(std::is_nothrow_assignable<U, U&&>::value, "");
}
}
TEST_CONSTEXPR_CXX23 bool test() {
{
test_basic</*IsArray*/ false>();
test_sfinae<false>();
}
{
test_basic</*IsArray*/ true>();
test_sfinae<true>();
}
return true;
}
int main(int, char**) {
test();
#if TEST_STD_VER >= 23
static_assert(test());
#endif
return 0;
}
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