65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
/*************************************************************************
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*
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* Copyright (C) 2018-2023 Ruilin Peng (Nick) <pymumu@gmail.com>.
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*
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* smartdns is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* smartdns is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _SMARTDNS_TEST_UTILS_
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#define _SMARTDNS_TEST_UTILS_
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#include <functional>
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#include <string>
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namespace smartdns
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{
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class DeferGuard
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{
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public:
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template <class Callable>
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DeferGuard(Callable &&fn) noexcept : fn_(std::forward<Callable>(fn))
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{
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}
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DeferGuard(DeferGuard &&other) noexcept
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{
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fn_ = std::move(other.fn_);
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other.fn_ = nullptr;
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}
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virtual ~DeferGuard()
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{
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if (fn_) {
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fn_();
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}
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};
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DeferGuard(const DeferGuard &) = delete;
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void operator=(const DeferGuard &) = delete;
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private:
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std::function<void()> fn_;
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};
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#define SMARTDNS_CONCAT_(a, b) a##b
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#define SMARTDNS_CONCAT(a, b) SMARTDNS_CONCAT_(a, b)
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#define Defer ::smartdns::DeferGuard SMARTDNS_CONCAT(__defer__, __LINE__) = [&]()
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bool IsCommandExists(const std::string &cmd);
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std::string GenerateRandomString(int len);
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} // namespace smartdns
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#endif // _SMARTDNS_TEST_UTILS_
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