| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | // UNSUPPORTED: c++03, c++11, c++14 |
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| 10 | // UNSUPPORTED: availability-filesystem-missing |
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| 11 | |
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| 12 | // <filesystem> |
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| 13 | |
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| 14 | // void swap(path& lhs, path& rhs) noexcept; |
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| 15 | |
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| 16 | #include <filesystem> |
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| 17 | #include <type_traits> |
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| 18 | #include <cassert> |
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| 19 | |
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| 20 | #include "test_macros.h" |
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| 21 | #include "count_new.h" |
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| 22 | namespace fs = std::filesystem; |
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| 23 | |
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| 24 | // NOTE: this is tested in path.members/path.modifiers via the member swap. |
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| 25 | int main(int, char**) |
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| 26 | { |
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| 27 | using namespace fs; |
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| 28 | const char* value1 = "foo/bar/baz" ; |
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| 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" ; |
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| 30 | { |
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| 31 | path p1(value1); |
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| 32 | path p2(value2); |
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| 33 | fs::path::string_type ps1 = p1.native(); |
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| 34 | fs::path::string_type ps2 = p2.native(); |
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| 35 | |
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| 36 | DisableAllocationGuard g; |
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| 37 | swap(lhs&: p1, rhs&: p2); |
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| 38 | ASSERT_NOEXCEPT(swap(lhs&: p1, rhs&: p2)); |
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| 39 | ASSERT_SAME_TYPE(void, decltype(swap(p1, p2))); |
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| 40 | assert(p1.native() == ps2); |
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| 41 | assert(p2.native() == ps1); |
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| 42 | swap(lhs&: p1, rhs&: p2); |
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| 43 | assert(p1.native() == ps1); |
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| 44 | assert(p2.native() == ps2); |
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| 45 | } |
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| 46 | |
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| 47 | // Test the swap two-step idiom |
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| 48 | { |
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| 49 | path p1(value1); |
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| 50 | path p2(value2); |
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| 51 | fs::path::string_type ps1 = p1.native(); |
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| 52 | fs::path::string_type ps2 = p2.native(); |
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| 53 | |
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| 54 | DisableAllocationGuard g; |
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| 55 | using namespace std; |
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| 56 | swap(lhs&: p1, rhs&: p2); |
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| 57 | ASSERT_NOEXCEPT(swap(lhs&: p1, rhs&: p2)); |
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| 58 | ASSERT_SAME_TYPE(void, decltype(swap(p1, p2))); |
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| 59 | assert(p1.native() == ps2); |
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| 60 | assert(p2.native() == ps1); |
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| 61 | swap(lhs&: p1, rhs&: p2); |
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| 62 | assert(p1.native() == ps1); |
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| 63 | assert(p2.native() == ps2); |
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| 64 | } |
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| 65 | |
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| 66 | return 0; |
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| 67 | } |
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| 68 | |
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