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-exception
6//
7//===----------------------------------------------------------------------===//
8
9// UNSUPPORTED: c++03, c++11, c++14
10// UNSUPPORTED: availability-filesystem-missing
11
12// <filesystem>
13
14// class path
15
16// void swap(path& rhs) noexcept;
17
18#include <filesystem>
19#include <cassert>
20#include <type_traits>
21
22#include "assert_macros.h"
23#include "count_new.h"
24#include "test_iterators.h"
25namespace fs = std::filesystem;
26
27struct SwapTestcase {
28 const char* value1;
29 const char* value2;
30};
31
32#define LONG_STR1 "_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG"
33#define LONG_STR2 "_THIS_IS_LONG2_THIS_IS_LONG2_THIS_IS_LONG2_THIS_IS_LONG2_THIS_IS_LONG2_THIS_IS_LONG2_THIS_IS_LONG2"
34const SwapTestcase TestCases[] =
35 {
36 {.value1: "", .value2: ""}
37 , {.value1: "shortstr", LONG_STR1}
38 , {LONG_STR1, .value2: "shortstr"}
39 , {LONG_STR1, LONG_STR2}
40 };
41#undef LONG_STR1
42#undef LONG_STR2
43
44int main(int, char**)
45{
46 using namespace fs;
47 {
48 path p;
49 ASSERT_NOEXCEPT(p.swap(rhs&: p));
50 ASSERT_SAME_TYPE(void, decltype(p.swap(p)));
51 }
52 for (auto const & TC : TestCases) {
53 path p1(TC.value1);
54 path p2(TC.value2);
55 {
56 DisableAllocationGuard g;
57 p1.swap(rhs&: p2);
58 }
59 assert(p1 == TC.value2);
60 assert(p2 == TC.value1);
61 {
62 DisableAllocationGuard g;
63 p1.swap(rhs&: p2);
64 }
65 assert(p1 == TC.value1);
66 assert(p2 == TC.value2);
67 }
68 // self-swap
69 {
70 const char* Val = "aoeuaoeuaoeuaoeuaoeuaoeuaoeuaoeuaoeu";
71 path p1(Val);
72 assert(p1 == Val);
73 {
74 DisableAllocationGuard g;
75 p1.swap(rhs&: p1);
76 }
77 assert(p1 == Val);
78 }
79
80 return 0;
81}
82

source code of libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/swap.pass.cpp