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119 lines
2.8 KiB
C++
119 lines
2.8 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// <memory>
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// unique_ptr
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// test reset
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#include <memory>
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#include <cassert>
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#include "test_macros.h"
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#include "unique_ptr_test_helper.h"
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template <bool IsArray>
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void test_reset_pointer() {
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typedef typename std::conditional<IsArray, A[], A>::type VT;
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const int expect_alive = IsArray ? 3 : 1;
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#if TEST_STD_VER >= 11
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{
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using U = std::unique_ptr<VT>;
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U u; ((void)u);
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ASSERT_NOEXCEPT(u.reset((A*)nullptr));
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}
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#endif
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{
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std::unique_ptr<VT> p(newValue<VT>(expect_alive));
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assert(A::count == expect_alive);
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A* i = p.get();
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assert(i != nullptr);
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A* new_value = newValue<VT>(expect_alive);
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assert(A::count == (expect_alive * 2));
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p.reset(new_value);
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assert(A::count == expect_alive);
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assert(p.get() == new_value);
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}
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assert(A::count == 0);
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{
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std::unique_ptr<const VT> p(newValue<const VT>(expect_alive));
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assert(A::count == expect_alive);
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const A* i = p.get();
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assert(i != nullptr);
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A* new_value = newValue<VT>(expect_alive);
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assert(A::count == (expect_alive * 2));
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p.reset(new_value);
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assert(A::count == expect_alive);
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assert(p.get() == new_value);
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}
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assert(A::count == 0);
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}
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template <bool IsArray>
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void test_reset_nullptr() {
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typedef typename std::conditional<IsArray, A[], A>::type VT;
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const int expect_alive = IsArray ? 3 : 1;
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#if TEST_STD_VER >= 11
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{
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using U = std::unique_ptr<VT>;
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U u; ((void)u);
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ASSERT_NOEXCEPT(u.reset(nullptr));
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}
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#endif
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{
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std::unique_ptr<VT> p(newValue<VT>(expect_alive));
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assert(A::count == expect_alive);
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A* i = p.get();
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assert(i != nullptr);
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p.reset(nullptr);
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assert(A::count == 0);
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assert(p.get() == nullptr);
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}
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assert(A::count == 0);
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}
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template <bool IsArray>
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void test_reset_no_arg() {
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typedef typename std::conditional<IsArray, A[], A>::type VT;
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const int expect_alive = IsArray ? 3 : 1;
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#if TEST_STD_VER >= 11
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{
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using U = std::unique_ptr<VT>;
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U u; ((void)u);
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ASSERT_NOEXCEPT(u.reset());
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}
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#endif
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{
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std::unique_ptr<VT> p(newValue<VT>(expect_alive));
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assert(A::count == expect_alive);
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A* i = p.get();
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assert(i != nullptr);
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p.reset();
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assert(A::count == 0);
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assert(p.get() == nullptr);
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}
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assert(A::count == 0);
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}
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int main(int, char**) {
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{
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test_reset_pointer</*IsArray*/ false>();
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test_reset_nullptr<false>();
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test_reset_no_arg<false>();
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}
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{
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test_reset_pointer</*IsArray*/true>();
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test_reset_nullptr<true>();
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test_reset_no_arg<true>();
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}
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return 0;
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}
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