| 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, c++17 |
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| 10 | // UNSUPPORTED: no-filesystem, no-localization, no-tzdb |
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| 11 | |
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| 12 | // XFAIL: libcpp-has-no-experimental-tzdb |
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| 13 | // XFAIL: availability-tzdb-missing |
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| 14 | |
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| 15 | // <chrono> |
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| 16 | // |
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| 17 | // class utc_clock; |
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| 18 | |
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| 19 | // static time_point now(); |
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| 20 | |
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| 21 | #include <chrono> |
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| 22 | #include <concepts> |
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| 23 | #include <cassert> |
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| 24 | |
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| 25 | int main(int, const char**) { |
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| 26 | using clock = std::chrono::utc_clock; |
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| 27 | std::same_as<clock::time_point> decltype(auto) t = clock::now(); |
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| 28 | |
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| 29 | assert(t >= clock::time_point::min()); |
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| 30 | assert(t <= clock::time_point::max()); |
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| 31 | |
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| 32 | auto t2 = clock::now(); |
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| 33 | assert(t2 - t >= std::chrono::seconds(0)); |
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| 34 | // This may fail if the tests takes a long time to complete. |
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| 35 | assert(t2 - t < std::chrono::seconds(42)); |
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| 36 | |
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| 37 | return 0; |
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| 38 | } |
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| 39 | |
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