process-cpp: /build/process-cpp/src/process-cpp-3.0.1/tests/cross_process_sync_test.cpp Source File

process-cpp 3.0.0 A simple convenience library for handling processes in C++11.

cross_process_sync_test.cpp
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1 /*
2 * Copyright © 2013 Canonical Ltd.
3 *
4 * This program is free software: you can redistribute it and/or modify it
5 * under the terms of the GNU Lesser General Public License version 3,
6 * as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU Lesser General Public License for more details.
12 *
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 *
16 * Authored by: Thomas Voß <thomas.voss@canonical.com>
17 */
18
19 #include <core/testing/cross_process_sync.h>
20
21 #include <core/testing/fork_and_run.h>
22
23 #include <gtest/gtest.h>
24
25 TEST(CrossProcessSync, signalling_the_sync_object_results_in_correct_count)
26 {
27 core::testing::CrossProcessSync cps;
28
29 auto service = [&cps]()
30 {
31 for (unsigned int i = 1; i <= 50; i++)
32 {
33 EXPECT_NO_THROW(cps.try_signal_ready_for(std::chrono::milliseconds{500}));
34 }
35 return ::testing::Test::HasFailure() ?
36 core::posix::exit::Status::failure : core::posix::exit::Status::success;
37 };
38
39 auto client = [&cps]()
40 {
41 std::uint32_t counter = 0;
42 for (unsigned int i = 1; i <= 50; i++)
43 {
44 EXPECT_NO_THROW(counter = cps.wait_for_signal_ready_for(std::chrono::milliseconds{500}));
45 EXPECT_EQ(i, counter);
46 }
47
48 return ::testing::Test::HasFailure() ?
49 core::posix::exit::Status::failure : core::posix::exit::Status::success;
50 };
51
52 EXPECT_EQ(core::testing::ForkAndRunResult::empty, core::testing::fork_and_run(service, client));
53 }
54
55 TEST(CrossProcessSync, timed_out_wait_on_sync_object_throws_correct_exception)
56 {
57 core::testing::CrossProcessSync cps;
58
59 EXPECT_THROW(cps.wait_for_signal_ready_for(std::chrono::milliseconds{1}),
60 core::testing::CrossProcessSync::Error::Timeout);
61 }
core::testing::CrossProcessSync
A cross-process synchronization primitive that supports simple wait-condition-like scenarios.
Definition: cross_process_sync.h:37
fork_and_run.h
TEST
TEST(CrossProcessSync, signalling_the_sync_object_results_in_correct_count)
Definition: cross_process_sync_test.cpp:25
core::testing::CrossProcessSync::try_signal_ready_for
void try_signal_ready_for(const std::chrono::milliseconds &duration)
Try to signal the other side that we are ready for at most duration milliseconds.
Definition: cross_process_sync.cpp:62
core::testing::CrossProcessSync::Error::Timeout
Thrown if any of the *_for functions times out.
Definition: cross_process_sync.h:48
cross_process_sync.h
core::posix::exit::Status::success
@ success
core::testing::CrossProcessSync::wait_for_signal_ready_for
std::uint32_t wait_for_signal_ready_for(const std::chrono::milliseconds &duration)
Wait for the other sides to signal readiness for at most duration milliseconds.
Definition: cross_process_sync.cpp:78
core::testing::fork_and_run
CORE_POSIX_DLL_PUBLIC ForkAndRunResult fork_and_run(const std::function< core::posix::exit::Status()> &service, const std::function< core::posix::exit::Status()> &client)
Forks two processes for both the service and the client.
Definition: fork_and_run.cpp:41