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
10
11 // <filesystem>
12
13 // void swap(path& lhs, path& rhs) noexcept;
14
15 #include "filesystem_include.h"
16 #include <type_traits>
17 #include <cassert>
18
19 #include "test_macros.h"
20 #include "count_new.h"
21 #include "filesystem_test_helper.h"
22
23 // NOTE: this is tested in path.members/path.modifiers via the member swap.
main(int,char **)24 int main(int, char**)
25 {
26 using namespace fs;
27 const char* value1 = "foo/bar/baz";
28 const char* value2 = "_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG";
29 {
30 path p1(value1);
31 path p2(value2);
32 fs::path::string_type ps1 = p1.native();
33 fs::path::string_type ps2 = p2.native();
34
35 DisableAllocationGuard g;
36 swap(p1, p2);
37 ASSERT_NOEXCEPT(swap(p1, p2));
38 ASSERT_SAME_TYPE(void, decltype(swap(p1, p2)));
39 assert(p1.native() == ps2);
40 assert(p2.native() == ps1);
41 swap(p1, p2);
42 assert(p1.native() == ps1);
43 assert(p2.native() == ps2);
44 }
45
46 // Test the swap two-step idiom
47 {
48 path p1(value1);
49 path p2(value2);
50 fs::path::string_type ps1 = p1.native();
51 fs::path::string_type ps2 = p2.native();
52
53 DisableAllocationGuard g;
54 using namespace std;
55 swap(p1, p2);
56 ASSERT_NOEXCEPT(swap(p1, p2));
57 ASSERT_SAME_TYPE(void, decltype(swap(p1, p2)));
58 assert(p1.native() == ps2);
59 assert(p2.native() == ps1);
60 swap(p1, p2);
61 assert(p1.native() == ps1);
62 assert(p2.native() == ps2);
63 }
64
65 return 0;
66 }
67