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 // void swap(path& lhs, path& rhs) noexcept;
15
16 #include <filesystem>
17 #include <type_traits>
18 #include <cassert>
19
20 #include "test_macros.h"
21 #include "count_new.h"
22 namespace fs = std::filesystem;
23
24 // NOTE: this is tested in path.members/path.modifiers via the member swap.
main(int,char **)25 int main(int, char**)
26 {
27 using namespace fs;
28 const char* value1 = "foo/bar/baz";
29 const char* value2 = "_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG";
30 {
31 path p1(value1);
32 path p2(value2);
33 fs::path::string_type ps1 = p1.native();
34 fs::path::string_type ps2 = p2.native();
35
36 DisableAllocationGuard g;
37 swap(p1, p2);
38 ASSERT_NOEXCEPT(swap(p1, p2));
39 ASSERT_SAME_TYPE(void, decltype(swap(p1, p2)));
40 assert(p1.native() == ps2);
41 assert(p2.native() == ps1);
42 swap(p1, p2);
43 assert(p1.native() == ps1);
44 assert(p2.native() == ps2);
45 }
46
47 // Test the swap two-step idiom
48 {
49 path p1(value1);
50 path p2(value2);
51 fs::path::string_type ps1 = p1.native();
52 fs::path::string_type ps2 = p2.native();
53
54 DisableAllocationGuard g;
55 using namespace std;
56 swap(p1, p2);
57 ASSERT_NOEXCEPT(swap(p1, p2));
58 ASSERT_SAME_TYPE(void, decltype(swap(p1, p2)));
59 assert(p1.native() == ps2);
60 assert(p2.native() == ps1);
61 swap(p1, p2);
62 assert(p1.native() == ps1);
63 assert(p2.native() == ps2);
64 }
65
66 return 0;
67 }
68