/* * Copyright © 2012-2013 Canonical Ltd. * * This program is free software: you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License version 3, * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program. If not, see . * * Authored by: Thomas Voß */ #ifndef CORE_TESTING_FORK_AND_RUN_H_ #define CORE_TESTING_FORK_AND_RUN_H_ #include #include #include #include namespace core { namespace testing { /** * @brief The ForkAndRunResult enum models the different failure modes of fork_and_run. */ enum class ForkAndRunResult { empty = 0, ///< Special value indicating no bit being set. client_failed = 1 << 0, ///< The client failed. service_failed = 1 << 1 ///< The service failed. }; CORE_POSIX_DLL_PUBLIC ForkAndRunResult operator|(ForkAndRunResult lhs, ForkAndRunResult rhs); CORE_POSIX_DLL_PUBLIC ForkAndRunResult operator&(ForkAndRunResult lhs, ForkAndRunResult rhs); /** * @brief Forks two processes for both the service and the client. * * The function does the following: * - Forks a process for the service and runs the respective closure. * - Forks a process for the client and runs the respective closure. * - After the client has finished, the service is signalled with sigterm. * * @throw std::system_error if an error occured during process interaction. * @throw std::runtime_error for signalling all other error conditions. * @param [in] service The service to be executed in a child process. * @param [in] client The client to be executed in a child process. * @return ForkAndRunResult indicating if either of service or client failed. */ CORE_POSIX_DLL_PUBLIC ForkAndRunResult fork_and_run( const std::function& service, const std::function& client); } } /** * Test definition macro which runs a TEST in a forked process. * Note that you can only use EXPECT_*, not * ASSERT_*! * * Usage: * TESTP(test_suite, test_name, { * test code ... * EXPECT_* ... * }) */ #define TESTP(test_suite, test_name, CODE) \ TEST(test_suite, test_name) { \ auto test = [&]() { \ CODE \ return HasFailure() ? core::posix::exit::Status::failure \ : core::posix::exit::Status::success; \ }; \ auto child = core::posix::fork( \ test, \ core::posix::StandardStream::empty); \ auto result = child.wait_for(core::posix::wait::Flags::untraced); \ EXPECT_EQ(core::posix::wait::Result::Status::exited, result.status); \ EXPECT_EQ(core::posix::exit::Status::success, result.detail.if_exited.status); \ } \ /** * Test definition macro which runs a TEST_F in a forked process. * Note that you can only use EXPECT_*, not ASSERT_*! * * Usage: * TESTP_F(FixtureName, TestName, { * ... test code ... * EXPECT_* ... * }) */ #define TESTP_F(test_fixture, test_name, CODE) \ TEST_F(test_fixture, test_name) { \ auto test = [&]() { \ CODE \ return HasFailure() ? core::posix::exit::Status::failure \ : core::posix::exit::Status::success; \ }; \ auto child = core::posix::fork( \ test, \ core::posix::StandardStream::empty); \ auto result = child.wait_for(core::posix::wait::Flags::untraced); \ EXPECT_EQ(core::posix::wait::Result::Status::exited, result.status); \ EXPECT_EQ(core::posix::exit::Status::success, result.detail.if_exited.status); \ } \ #endif // CORE_TESTING_FORK_AND_RUN_H_