110 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// <memory>10 11// unique_ptr12 13// test swap14 15#include <memory>16#include <cassert>17 18#include "test_macros.h"19#include "unique_ptr_test_helper.h"20 21struct TT {22 int state_;23 static int count;24 TEST_CONSTEXPR_CXX23 TT() : state_(-1) {25 if (!TEST_IS_CONSTANT_EVALUATED)26 ++count;27 }28 TEST_CONSTEXPR_CXX23 explicit TT(int i) : state_(i) {29 if (!TEST_IS_CONSTANT_EVALUATED)30 ++count;31 }32 TEST_CONSTEXPR_CXX23 TT(const TT& a) : state_(a.state_) {33 if (!TEST_IS_CONSTANT_EVALUATED)34 ++count;35 }36 TEST_CONSTEXPR_CXX23 TT& operator=(const TT& a) {37 state_ = a.state_;38 return *this;39 }40 TEST_CONSTEXPR_CXX23 ~TT() {41 if (!TEST_IS_CONSTANT_EVALUATED)42 --count;43 }44 45 friend TEST_CONSTEXPR_CXX23 bool operator==(const TT& x, const TT& y) { return x.state_ == y.state_; }46};47 48int TT::count = 0;49 50template <class T>51TEST_CONSTEXPR_CXX23 typename std::remove_all_extents<T>::type* newValueInit(int size, int new_value) {52 typedef typename std::remove_all_extents<T>::type VT;53 VT* p = newValue<T>(size);54 for (int i = 0; i < size; ++i)55 (p + i)->state_ = new_value;56 return p;57}58 59template <bool IsArray>60TEST_CONSTEXPR_CXX23 void test_basic() {61 typedef typename std::conditional<IsArray, TT[], TT>::type VT;62 const int expect_alive = IsArray ? 5 : 1;63#if TEST_STD_VER >= 1164 {65 using U = std::unique_ptr<VT, Deleter<VT> >;66 U u; ((void)u);67 ASSERT_NOEXCEPT(u.swap(u));68 }69#endif70 {71 TT* p1 = newValueInit<VT>(expect_alive, 1);72 std::unique_ptr<VT, Deleter<VT> > s1(p1, Deleter<VT>(1));73 TT* p2 = newValueInit<VT>(expect_alive, 2);74 std::unique_ptr<VT, Deleter<VT> > s2(p2, Deleter<VT>(2));75 assert(s1.get() == p1);76 assert(*s1.get() == TT(1));77 assert(s1.get_deleter().state() == 1);78 assert(s2.get() == p2);79 assert(*s2.get() == TT(2));80 assert(s2.get_deleter().state() == 2);81 s1.swap(s2);82 assert(s1.get() == p2);83 assert(*s1.get() == TT(2));84 assert(s1.get_deleter().state() == 2);85 assert(s2.get() == p1);86 assert(*s2.get() == TT(1));87 assert(s2.get_deleter().state() == 1);88 if (!TEST_IS_CONSTANT_EVALUATED)89 assert(TT::count == (expect_alive * 2));90 }91 if (!TEST_IS_CONSTANT_EVALUATED)92 assert(TT::count == 0);93}94 95TEST_CONSTEXPR_CXX23 bool test() {96 test_basic</*IsArray*/ false>();97 test_basic<true>();98 99 return true;100}101 102int main(int, char**) {103 test();104#if TEST_STD_VER >= 23105 static_assert(test());106#endif107 108 return 0;109}110